11

THE PREPARATION OF THREE BASE-METAL REFERENCE MATERIALS: LEAD CONCENTRATE, IGS-42, ZINC CONCENTRATE, IGS-43 AND COPPER MATTE, IGS-44

Brian LISTER

British Geological Survey, Geochemistry Directorate, London WClX 8NG, United Kingdom

Three base-metal concentrates, each weighing 25 kg, were ground to -175 mesh (90 pm) and homogenised. They were then sub-sampled into foil-lined envelopes and sealed under argon before being issued to 27 participating laboratories for analysis. Over 4000 analytical results were returned and, after evaluation, a total of 37 elements within the three samples have been given recommended or more cautious probable values. The high standard of precision attained has enabled clear-cut distinctions to be made between methods for the determination of some elements. The most important of these is between titrimetry and electrogravimetry in the determination of copper.

Following preparation of the series of 20 standards, IGS 20-39 (l) , several chief chemists and laboratory managers whose laboratories had participated in their analysis, were asked to indicate what additional reference materials would be valuable to their work. Base metal concentrates were considered to be the most useful and this opinion is supported by the fact that, of those 20 standards, the lead-zinc concentrate, IGS 28, is the most frequently requested.

These three concentrates, IGS 42-44, were generously supplied by the Broken Hill Associated Smelters Pty Ltd and each weighed some 25 kg. In some ways, in view of the considerable work involved, both in preparation and analysis, this is a smaller weight than desirable. However, oxidation can be a serious problem with some sulphide ores (2), and, because of this, the writer believes that the preparation of large quantities of sulphide standards that remain available for many years is inadvisable. An additional factor is that, even if analytical techniques improve and further determinations are returned, they are unlikely to improve on the recommended values since analysts may suppress results

that appear to be in error (3). Any improvements to techniques would be better devoted to the analysis of newer standards. These comments are largely confined to the major elements in existing standards; there is often room for improvement in the data for minor and trace constituents. Indeed, for the bastnasites, IGS-40 and 41 (4), there is much room for improvement even in the values for some of the major constituents since these two reference materials reflect the difficulties of rare-earth analysis.

PFCEPAFWTION

The lead concentrate was sieved to 100% -175 mesh (90 Fm) using brass sieves. Coarser material was ground under argon in a Linatex-lined rod mill using steel rods. About 200 g of >175 mesh material was discarded at the end of grinding. The sample was homogenized by rotation in a baffled drum under argon for 20 hours and then sub- sampled on a hierarchical system using a Pascal1 rotary sampler, 324 sub-samples each weighing approximately 90 g, were produced (Fig.1). The zinc concentrate was treated similarly except that a split drum caused the loss of some 1.5 kg of the sample after 17 hours rotation. The copper matte was passed through a 200 mesh (75 Fm), brass sieve and any coarser material was crushed in the same way as the previous samples. At the end, approximately 200 g was passed through a 175 mesh sieve and some 100 g of coarser material, discarded.

All the sub-samples were sealed under argon. The first in actual order of processing, those from IGS 44, were sealed in plastic Securitainers and then in plastic and foil laminated envelopes. This proved a difficult operation without giving any worthwhile gain in protection from oxidation; IGS 42 and 43 were therefore sealed in the envelopes alone. All sub-samples were assigned a random number which identifies their position within the sampling hierarchy. Samples for homogeneity tests were taken from various points in the hierarchy as were those sent to

Geostandards Newsletter, Vol. 11, N O I , Avrill987, p . I1 Ct 34

12

participating laboratories in May, 1982. Laboratories were asked to report their results within a year.

Figure 1. Sampling hierarchy

HOMOGENEITY

For each of the 3 samples, two 500 mg portions, A and B were taken from eight sub-samples for neutron activation analysis using the Triga reactor at ICI, Billingham. The eight sub-samples were taken from various points in the sampling hierarchy in order to maximise any possible variation.

The sub-samples were irradiated for 20 min in a flux of 3 x 1012n/cm2/sec and counted for one hour using a Ge-Li detector. No attempt was made to calculate actual concentrations, results being expressed as induced activitylseclg. Results for Sb and Co, elements adequately sensitive to thermal neutrons, in IGS 43 and 44 are shown in Tables 2 and 3. Results for Sb, Ag and Au in IGS 42 are shown in Table 1.

Anomalously low results (asterisked in the tables) for single sub-samples in IGS 42 and 43 and for two sub- samples in IGS 44 were probably due to operator error using the pneumatic transfer system to the core. These have been omitted from any calculations.

Analysis of variance on the data (seven pairs in the case of IGS 42 and 43 and six pairs in the case of IGS 44) gives very low F values at the 0.05 significance level suggesting that there is no inhomogeneity (Tables 1 to, 3). However, doubt has recently been expressed about this method of checking homogeneity (5 ) . An alternative approach is to compare the precision of the data with the known precision of the method. This shows that the standard deviation of the results is either below or only a little above the standard deviation of the counting statistics, except in the case of Au in IGS 42 where the deviation is more than 20 times greater than that due to the counting statistics. The inference is that homogeneity is satisfactory at the 500 mg sampling weight level except in the case of Au in IGS 42. This is, perhaps, not unexpected at a concentration of approximately 1 ppm. The results in Appendix 2 show that there is a considerable measure of

Table 1. IGS 42, homogeneity data

Isotope, E y Sb 1690 A# 937 Au 411

I k m l o p e number

42 114 56 73 164 118 31 5 138

C r i t i c a l value 6 F7 0.05 = 3-87

A B *2.98 3.60 3.85 3.65 3.67 3.74 3.79 3.64 3.77 3.67 3.57 3.72 3.68 3.05 3.68 3.70

A B *0.489 0.509 0.493 0.517 0.491 0.512 0.504 0.512 0.487 0.466 0.513 0.468 0.530 0.493 0.485 0.494

A B 5.36 4.19 4.27 8.24 2-85 3 . a 8.89 6.59 3.00 4.32 3.92 4.29 3.56 4.23 7.20 5.39

F = 0.34 F = 0.87 F = 2.9

Standard devia t ion

(15 r e s u l t s ) 0.08 0.018 1.67

Standard devia t ion ,

count- s t a t i s t i c s 0.10 0.013 0.18

Table 2. IGS 43, homogeneity data

Isotope, E< Sb 1690 Co 1333

Envelope number

155 265 302 150 62

154 162 244

~ ~~

A B 0.62 0.63

0.63 0.67 0.64 0.65 0.63 0.62 0.65 0.62 0.63 0.51

*

0.62 0.66 0.63 0.66

A B 1-23 1.25

1.23 1.31 1.29 1.29 1.23 1.29 1.22 1.22 1.23 *0.97

1.27 1-30 1.34 1.23

C r i t i c a l value P = 0.52 F = 0.82 6 F7 0.05 = 3.87

Standard deviation

(15 results) 0.01 7 0.039

Standard deviation, counting s t a t i s t i c s 0.021 0.032

agreement between laboratories as to the true Au content where fire assay has been used and where sample weights were usually 7.5 or 10 g. This suggests that 10 g should constitute a satisfactory weight of sub-sample for the determination of gold. In the case of IGS 44, no NAA results were obtained but the inter-laboratory results show little agreement except that the gold content is perhaps less than 0.5 ppm. The fact that there is a measure of within- laboratory agreement suggests that, at the 10 g weight

13

level, the sample is homogeneous for gold and that variation between laboratories is due to problems of analysis at this low concentration. However, without further analytical evidence no firm conclusion can be drawn.

Table 3. IGS 44, homogeneity data

Isotope ? E f Sb 1690 Co 1333 ~~

mvelope number 119

116

164

309

265

23 1

305

306

A B 12.4 12.2

12.2 11.9

12.2 12.3 9.5 12.0

12.2 11.9

11.9 12.0

6.7 11.9 12.0 12.0

*

*

A

1.24

1.20

1.19 46

1.13

1.23

1.26

0.71 1.20

*

B 1.20

1.2:

1.20

1.26

1.23

1.24

1.23

1.28

~

Critical value F = 2.0 F = 0.78 5 Fg 0.05 = 4.39

Standard deviation j 1 4 results) 0.17

Standard deviation,

counting s t a t i s t i c s 0.30

0.028

0.031

REPORTING OF RESULTS

Participating laboratories were each sent two envelopes and asked to make two determinations from each The two envelopes were, in reality, splits of the same sub-sample. It has been noted elsewhere (6), that analytical results are strongly dependent on the laboratory from which they come and the above device was adopted in an attempt to lower that dependence. Two determinations from each of two containers should yield more independent results than four from one container.

Analysts were asked to dry the samples for not more than one hour at 100°C (to minimise oxidation), to report moisture and to give analytical results on a dry basis. They were also asked to determine other elements in addition to the major ones if they had the time and resources available and, for all elements, to give a brief outline of the methods used. A guide to the reporting of results (7) was sent with the samples.

Not all laboratories complied with these instructions; some in one aspect, a few in almost all. For example, different drying conditions were used, assay

laboratories often returned one averaged result, others returned up to ten determinations by one method. On occasion, results were rounded unnecessarily even though advice was given about this in the enclosed guide to reporting. This was more noticeable for some elements than for others - many analysts apparently felt justified in reporting cadmium to three significant figures whereas others rounded to two. The reporting of, for example, 0.123 and 0.127%, even if the last figure is uncertain, is much more valuable than rounding to 0.12 and 0.13%. This causes an apparent lowering of the laboratory precision as well as increasing the overall variance. Figure 2 shows the data for Cu in IGS 42 after ordering with respect to concentration, the stepped form being due to rounding.

Symbols used in Figures 2- 7

A Titrimetry V Gravimetry + Atomic absorption, emission x X-ray fluorescence

Emission Spectrography o Photometry, colorimetry * Undifferentiated

Results are plotted sequentially against concentration so that ordinates show number of results and the abscissae, elemental concentrations. Vertical lines represent the mean and one standard deviation either side.

PH

+ i 1

-1 I

1

i I

--I I

I 1

Figure 2. Copper in IGS 42

EVALUATION OF RESULTS

All together, 27 laboratories took part in the analysis of the samples. They were broadly grouped as follows: mining and metallurgical industry, 12; commercial analytical laboratories, 6; surveys and other government departments, 7 and universities, 2. They are listed in alphabetical order in Appendix 1.

14

Results were entered on data sheets identified by laboratory number, container number and method of analysis. They were also stored in a computer file for processing, Not all laboratories returned their data in the allotted time and the closing date was extended. Data on each sample totalled over 1000 and more than 30 elements were determined, some, however, by only one laboratory. The main data are listed in Appendix 2.

Data were processed on the NERC Honeywell 66:DPS-300 computer using a program devised by the writer and implemented by computer support staff. It is based on considerations discussed in a previous paper (8). The program first orders the data after which various statistical parameters may be calculated - the mean and standard deviation together with the 95% confidence intervals of the mean, skewness (db,) and kurtosis 0, the median, Gastwirth median (GM) (9), dominant cluster mode (DCM) (lo), 25% trimmed mean (25%), mmean (TRI) and Hampel's M-estimate (12A) (11). With the exception of the DCM, these were some of the most successful estimators amongst some 60 studied at the valuable Princeton seminar (11) in 1971. The DCM is particularly useful for the evaluation of skewed data. Significance levels for skewness and kurtosis (12) and the probability plot correlation coefficient (13) may be used to check the normality of a distribution and any discrepant data may be eliminated by considering dbl and or by using Grubbs' T-test (12). At any stage, the data can be plotted sequentially as S-distribution curves, different symbols being employed for the major analytical methods. This is an invaluable way of examining the data since any departures from the characteristic elongated S-shape of a normal distribution are seen and any outliers may be easily identified. It is found that outliers identified by eye often coincide with those identified using more mathematical criteria,

In previous work (l), occasional differences in the values obtained by different methods were noted. For example, there were significant differences in the means obtained for iron by titrimetry and by AAS, and also in the precision of results for niobium by gravimetry and XRF analysis. In the intervening years, there has been a tendency toward greater standardization of method but inconsistencies between methods emerged at once in the processing of data for lead in IGS 42. After the elimination ot outliers, gravimetric analysis gave slightly lower results than volumetry and those by AAS were significantly higher.

One important factor to be tested was whether the larger number of results returned by some laboratories weighted the data to any significant extent. This was done by averaging the results by any one method from any one envelope from each of these laboratories. There were, on occasions, minor differences between the various estimates of central tendency as well as in the standard deviations.

The facility to examine many aspects of the data rapidly using a computer program was not without its problems. For some elements, the writer was faced with a plethora of estimates of a true value and inevitably the final choice was, to some extent, subjective. This is best illustrated by reference to the 140 data for lead'mentioned above (see Table 4 and Fig. 3). Three main methods of analysis were used, gravimetry, titrimetry and AAS. The last of these cannot be recommended at such high concentrations and gave both poor precision and a higher than average estimate (M=75.34% or, without outliers, 75.33%) (see Fig. 4). Gravimetry also gave poor precision and a high estimate (M=75.05%) (see Fig. 5). Precision was much improved by removing the straggling outliers and the median became 74.76%. Titrimetry gave the highest precision before any elimination of outliers with an estimate, based on the median of 74.85% (Fig. 6). It seemed sensible to discount AAS results altogether and base any estimate of a true value on the remaining methods of analysis. The data also needed to be averaged as

k0 t 60

I

Figure 3. Pb in IGS 42

Figure 4. Pb by AAS in IGS 42

15

Table 4. Data for Pb in IGS 42

Estimate 1 2 3 4 5 6 7 8 9 10 11 12

140 1.11

75.08

75.01 74.98 74.97 74.99 75.03 75 -01

113

0.39 74.98 75 0 0 0 74.96 74.95 74 96 74.96 75.01

37 1.68 75.24 75.34 75 -40 75.46 75 042 75.41 75.20

28 0.38

75.46 75 . 33 75.38 75 38 75.38 75.39 75-20

30 1.13 75 58 75 005

75.14 75 0 0 0 75.19 75.31 74.73

i a 0.17 74.80 74.76 74.77 74.76 74 077 74.77 74.73

67 0.39 74.84 74 91 74.87 74 85 74.86 74.86 75-01

61 0.25 74.81 74 85 74.84 74.84 74.85 74.83 75 .01

103 0.82 75.03 74.91 74.89 74.85 74.88 74.89 75 0 0 0

83 0.27 74.84 74.84 74.84 74.85 74 85 74.84 74.98

39 0 :94 75.10 74.80 74.85 74 82

74.86 74.86 74 0 7 7

36 0.58

74.89 74.80 74.82 74.82 74.82 74 083 74 0 7 7

Key to estimates: 1 : U s i n g a l l results, 2: A l l results minus outliers, 3: U S results, 4: U S results minus outliers, 5: Cravimetrio results, 6: Grarimetric results minus outliers, 7: Titrimetric results,

8: Titrimetric results minus outliers, 9: A l l results minue AAS, 10: A s i n 9 minus outliers, 11: Lab. results averaged, a l l minus AAS, 12: A s i n 11 minus outliers.

I i 7 1 7

Figure 5 . Pb by gravimetry in IGS 42

described earlier to see whether the larger number of results from some laboratories had any significant effect. Estimates of a true value then centred on 74.85%. A final decision was taken to include all data minus AAS results in the calculations (n=103). After eliminating outliers, the 83 remaining results gave an estimate of 74.84% and this was chosen as the recommended value. 95% confidence limits for the median were based on the normal approximation to the binomial distribution.

In contrast, the zinc determinations in IGS 43 posed no problems (see Fig. 7). After the elimination of 4 low and 12 high outliers, the 130 remaining results formed an

almost perfect normal distribution for which most estimates agreed on a figure of 50.02%. Averaging results produced an estimate of 50.01%. A recommended value has been based on the mean of all results minus outliers.

Recommended values have been assigned where there is good agreement from at least five laboratories; where there were data from Iess than five laboratories or where, for any other reason, there was cause to doubt them, estimates have been termed "probable". They have been termed "possible" values where doubt about them was considerable either because of poor agreement or because of lack of data. Such values are given as a guide only,

16

I

--T-- y J

r _ I

Figure 7. Zn in IGS 43

without confidence intervals. The various estimates of central tendency are given in Tables 5 to 7 and the final accepted values in Tables 8 to 10.

Table 5. IGS 42, estimators of central tendency

44 83 52 93 54 63 17 46 30 14 41 32 e4 49 41 16 18 10

0.020 0.212 0.051 0.028 0.201 38.75 1.76 0.048 0.028 0.120 0.112 0.006 12.14 0.019 16.5 5.3 23.9 0.51

0.039 0.040 0.040 0.039 0.039 0.039 0.05 14.84 74.84 74.84 14.85 14.85 14.84 14.90 3.91 3.91 3.91 3.91 3.91 3.91 3.90 0.957 0.95 0.953 0.953 0.953 0.953 0.93 15.09 15.095 15.08 15.053 15.08 15.09 15.12 1236.8 1242 1238.1 1236.8 1237.2 1237.3 1242 1.39 0.9 0.9 0.84 0.87 0.9 0.8 2.027 2.03 2.031 2.028 2.028 2.028 2.03 0.205 0.21 0.208 0 . a 0.207 0.206 0.21 0.183 0.114 0.115 0.110 0.143 0.173 0.102 1.191 1.18 1.183 1.185 1.186 1.178 1.18 0.12 0.12 0.12 0.12 0.12 0.12 0.12 178.6 1-18 116 in 177 179 176 0.25 0.25 0.25 0.25 0.25 0.25 0.25 77.5 82 I8 80 79 78 84

31.3 32 31.7 31.4 31.4 31.2 25 98 loo 101 101 101 97 101

5.58 5.85 5.64 5.82 5.62 5.68 6.02

ma, even wnen reporrea, arying conairions were orten varied or unspecified (see Appendix 2). Nevertheless, after the elimination of very high results from one laboratory, most estimators, of central tendency converged on a figure of 0.04% which is considered as a probable value but without confidence limits.

Table 6. IGS 43, estimators of central tendency

f !I GM 12A 25:: TRI 3CN Deter- nina t ion s

K20- :: 51 0.041 0.070 0.07 0.068 0.067 0.067 0.068 0.070 Zn $ 130 G.301 j1.02 51.015 51.02 51.02 51.02 51.01 51.00 Pb :: 94 6.058 1.04 1.03 1.04 1.04 1.04 1.04 1.03 cu :: 66 0.009 0.130 0.13 C.131 0.130 0.130 0.129 0.130 s:: 74 C.383 32.21 32.19 32.20 32.20 32.19 32.22 32.15

bg ppm 78 2.4: 23.9 24 24.0 23.9 23.9 24 25 Fe $ 86 0.182 11.21 11.20 11.21 11.21 11.21 11.2: 11.21 Kn :' 69 0.059 1.41 1.40 1.40 1.40 1.40 1.40 1.36

S i 0 2 :.' 39 3.060 1.12 1.13 1.?2 1.11 1.12 1.12 1.03 As ppm 32 2 : 6 519 500 470 485 479 516 500 Cd ;; 72 0.006 0.170 6.179 0.176 0.178 5.178 0.170 C.160 Hg ppm 20 1. 1 1 19.8 20 i9.8 19.8 19.8 13.7 20

Co ?Pm 47 11.8 19b.5 206 201 200 200 199 20C LL p?rn 37 :0.01 20.2 15 '16.2 ;>.I 16.8 17.3 15

Table 7. IGS 44, estimators of central tendency ~ -

Dete- I M CM 126 25: T I 1 DCN mmation ' a

a20- 5 45 0.069 0.21 0.20 0.20 0.20 0.21 0.21 0.19 CU 5 38 0.098 40.32 40.34 40.33 40.33 40.33 40.33 40.37 Pb ;' 95 0.259 34.86 34.88 34.86 34.86 34.85 34.66 34.89

66 0.068 1.50 1.51 1.51 1.51 1.51 1.50 1.52 Zn % s ;; 72 0.237 14.34 14.33 14.34 14.34 14.34 14.33 14.30 Ag ppm 83 17.82 691 690 690 691 691 690 700 Fe $ 72 0.056 1.01 1.01 1.00 1.01 1.00 1.00 1.00 ra :: 23 0.008 0.122 0.121 0.122 0.122 0.172 0.122 0.120 A8 5 50 0.030 1.14 1.14 1.14 1.14 1.14 1.14 1.14 Cd 5 60 0.005 0.104 0.103 0.103 0.103 0.103 0.1G4 0.10 Sb $ 39 0.020 0.348 0.342 0.346 0.346 0.346 0.344 0.34 Co ppm 43 11-71 197 200 198 197 198 198 200 NI ppm 49 28.39 614 615 615 615 6'5 615 600 sn :' 21 0.108 0.31 0.36 0.33 0.33 0.32 0.32 0.37

Table 8. IGS 42, accepted values

17

Lead. These results have already been described in detail by way of illustrating the methods of evaluation. As stated above, the reconimended value is 74.83%

Zinc. hlost results were determined by AAS but four laboratories used titrimetry and their data were considerably higher (hl=3.038). The median of AAS results minus outliers (3.918) has been chosen as an estimate. Since the great variation between methods throws some doubt on the accuracy of zinc analysis at the 4% level, the value of 3.91% has been considered as probable rather than recommended.

Copper. The recommended value has been based on the median of the mainly AAS results minus outliers.

Sulphur. Gravimetric determinations appeared the most reliable and a recommended value has been based on th~s method alone although, using all results, the final estimate was little different.

Silver. Five assay results had a much smaller spread (1202-1287 ppm) than those obtained by AAS (1170-1700 ppm) but, after removal of outliers, both methods were in close agreement. A recommended value has been based on the mean of all results minus outliers.

Gold. Seven laboratories determined gold, of which four, using fire assay or fire assay with AAS finish, had a range of 0.8-1.0 ppm. The median of 0.9 ppm has been chosen as a probable value but, in view of the small number of laboratories involved, without confidence limits.

Iron. Most laboratories used AAS. The four groups of titrimetric data suggest a high bias for this method. A recommended value has been based on the mean of all results after elimination of outliers.

Manganese. Results were mainly by AAS and the median of all results has been used for a probable value.

C a l c i u m . There were four sets of data, three of which were in good agreement. A possible value has been based on the median of the latter.

Silica. Gravimeuy was the preferred method. After elimination of outliers, a recommended value has been based on the median.

Arsenic. Tiuimeuy and A A S were equally favoured as methods and there was no si&icant difference between them. A recommended value has been based on all results minus outliers.

Cadmium. The recommended value has been based on the median after eliminating outliers.

Antimony. As for cadmium.

Cobal t . After the elimination of two grossly high results, a probable value has been based on the DCM.

Nickel. As there were so few data, a possible value is based on the median.

Tin. As for nickel.

M e r c u r y . Only three laboratories determined mercury, all by flameless AAS. The range was from 5 to 6.1 ppm so that a possible value of 6 ppm has been assigned.

Other elements, (not listed in Appendix 2). There were data for a number of other elements but often from only one laboratory so that no values could be assigned. Selenium results from two laboratories ranged between 4 and 9 ppm which, perhaps, provides some indication of the level of concentration. For beryllium, there was little agreement between four laboratories though 10 ppm is, perhaps, an indication of magnitude. Laboratory No 28 determined some elements using two different ICP programmes. Where the results from these agreed, the inference is that they may well be right. These results are as follows: K, 500 ppm; Mg, 135 ppm, Ti, 110 ppm and Al, 0.14%.

Zinc Concentrate, IGS 43

Moisture. After removal of four very high results, a probable value has been based on the median.

Table 9. IGS 43, accepted values

Deter- Recommended Probable Possible 95:’ confidence mination value value value linits

H20- :‘i - 0.07 - - - zn 5; 51 -02 - - 50.96 51.08 Pb $ 1.04 - - 1.025 1.055 cu $ 0.130 - - 0.127 0.132 S $ 32.20 - - 32.14 32.30

Fe 3: 11.21 - - 11.17 11.26 - - Ag ppm 24 23 25

1.40 - - 1.37 1.43 sio2 $ 1.12 - - 1.09 1.15

- - AS PPm 500 400 700 Cd 0.179 - - 0.175 0.181

H g Ppm 20 19 21 - - - - 186 205 Co ppm 200

Ni ppm 15 - - - -

Zinc and lead. The recommended values and confidence limits have been based on the mean after removal of outliers.

18

Copper. AAS data were often rounded so that there were many results at 0.11,0.12,0.13% and so on. The data were averaged as previously described but estimates were the same as when all the data were used and a recommended value 0.13%, has been based on the latter.

Sulphur. After eliminating outliers, the Gastwirth median has been used as the recommended value, 32.20%.

Silver. AAS determinations appeared the most consistent. After both high and low outliers had been removed, the recommended value 24 ppm, has been based on the median.

Iron. The data suggest that, of the two preferred methods, AAS gives a slightly higher value than titrimetry - 11.21% compared with 11.18%. The median of all results, 1 1.21% is the recommended value.

Manganese. The recommended value, 1.40% has been based on the median.

Sil ica. After elimination of outliers, the mean, 1,12%, has been adopted as a recommended value.

Copper Matte, IGS 44

Moisture. Six very high results have been removed, after which agreement was fair. A probable value has been based on the median.

Table 10. IGS 44, accepted values

Dete- Recommended Probable Possible 9%; confidence mination value value value limits

40.33 34-86 1.51 14.34 691 1.01 0.122 1 . I4

0.103

198

61 5 -

40.28 34.80 1.48 14.28 686 0.99 0.119 1.13 0.100

0.33 190 600

- 40.37 34 92 1.53 14.40 696 1 a 0 3

0.125 1.15 0.107 0.36 204 625

-

Arsenic. The spread of results was wide (200-1500 ppm) and a probable value has been based on the median.

Cadmium. The recommended value, 0.179%, has been based on the median after elimination of outliers.

Mercury. There was remarkable agreement between five of the seven laboratories determining mercury (range, 18-22.2ppm). A recommended value has been based on the median of these values.

Cobalt. After removal of outliers, all estimates were in good agreement and the recommended value has been based on the median.

Nickel. Even after the removal of anomalous results, there was still a wide spread (10-4lppm) and only a possible value has been given.

Other elements, (not listed in Appendix 2). Gold determinations were submitted by only two laboratories. One returned 1 ppm by fire assay; the other, 0.07 ppm by AAS and 0.1 ppm by fire assay. Two laboratories determined calcium. As for IGS 42, laboratory No 28 used two ICP programmes which agreed at about 0.26%; the other laboratory returned 0.53%. For germanium, there were results of 5 ppm from three laboratories, the other two returning 0.3 and 3 ppm. Five laboratories returned results for antimony which ranged from 100 to 700 ppm, those for tin, from three laboratories, ranged between 10 and 50 ppm.

Copper . It was noted in the evaluation of the evaluation of the copper-nickel sample, IGS 20 (1). that electrogravimetry gave a higher value than titrimetry and that AAS was even higher. In IGS 44, after elimination of outliers, there was good agreement between electrolysis and AAS but titrimetry was again lower. That there is a difference between electrogravimetry and titrimetry, the two preferred methods of determining copper at high concentration, is disturbing. There are few outliers by either method but if these are removed, the ranges are 40.12-40.45 and 39.90-40.39% and estimates of a true value are 40.33 and 40.16%, respectively. Determinations by both methods are very precise and give such close 95% confidence intervals that they do not even overlap. The data by both methods are plotted in Figure 8. Several laboratories that participated in the original analytical work have already agreed to re-determine copper using both methods and it is hoped that the results will help to resolve the anomaly. This has been discussed with many analysts and the general consensus is that electrogravimetry is the more reliable method. Accordingly, for the moment, until the position is clarified, the recommended value is 40.33%. with the proviso that, in this particular set of data, titrimetry gives a significantly lower value of 40.16%.

L e a d . As for IGS 42, there is evidence that gravimetry gives a lower result than titrimetry. The difference is not significant and a recommended value of 34.86% has been based on the mean of all results minus outliers.

Zinc. After removal of outliers, the recommended

19

I 1

39 41

cu% Figure 8. Cu in IGS 44

value of 1.5 1% has been based on the median.

Sulphur. Very low results from two laboratories were eliminated and the recommended value is the mean of the remaining data.

Silver. AAS results were higher than those by fire assay though the difference was not statistically significant. The recommended value 691 ppm, has been based on the mean of all results minus outliers. It should be noted that AAS data were about 3 ppm higher than this figure; fire assay data were some 5 ppm lower.

Iron. There was no significant difference between the two preferred methods of analysis - titrimetry and AAS. The recommended value 1.1 %, has been based on all results minus outliers.

Manganese. Despite few data, agreement was good and a recommended value has been based on the mean of all results after removal of one outlier.

Arsenic. Most laboratories used titrimetry or AAS and the results differed little between methods. The recommended value 1.14%, has been based on all results minus outliers.

C a d m i urn. After elimination of outliers, the recommended value is the median.

A n t i m o n y . Although only four results were removed and the remaining data appeared satisfactory, a more cautious probable values, based on the Gastwirth median, has been given.

Cobalt. Eight low results were eliminated and the recommended value is again the Gastwih median

Nickel. The recommended value has been based on the median.

Tin. There was poor agreement between the seven laboratories determining tin (range 0.12-0.47%). Two laboratories returned results around 0.36% and this is tentatively given as a possible value.

Other elements. (not listed in Appendix 2). Gold data were submitted by eight laboratories but they ranged from 0.046 to 0.6 ppm with no agreement. Either gold determination on this sample is particularly difficult or it is not homogeneous for gold. For calcium, Laboratory No 28 achieved good agreement at 0.3% between its two ICP programmes and this is possibly of the right order. Four laboratories determined selenium, the range being from 0.068 to 0.11%; 0.1% is suggested as a tentative value. Silica data were provided by three laboratories, two of which agree on a figure of about 1.6%. Of the four laboratories determining tellurium, two agree on a figure of about 20 ppm. The two groups of results for aluminium from laboratory No 28 agree well at 0.12%. Chromium data suggest a figure of approximately 20 ppm and those for magnesium, 400 ppm.

CONCLUSIONS

Altogether, 37 elements within the three samples have been assigned recommended or probable values. This is an impressive achievement by the participating laboratories. The results, however, underline one problem - for some elements where different methods were used, there are different results. Sometimes this may be due to the use of an inappropriate method (AAS at high concentration, for example) but not in other cases; there are definite biases between methods for some elements at specific concentrations. There is, apparently, no certainty which method may be right. This suggests that any

20

reference materials programme using only one "preferred method" of analysis for a specific element could be problematical. Indeed, for the present data, the agreement for mercury in.IGS 43 by five laboratories has already been described as remarkable. However, as they all used a similar flameless AAS technique, is the final result a good estimate of a true value or could thcre be a method bias?

The major discrepancy that persists is that between electrogravimetry and tiaimetry in the determination of copper. It occurred for IGS 20, for IGS 44 and an examination of the data for a copper concentrate from Bougainville, IGS 45 indicates that it is present yet again. Lest those unfamiliar with the characteristics of a good reference material think that the variations between methods indicate a less than satisfactory material, it should be remarked that the opposite is the case. It is precisely because homogeneity is at a high level and that precision of analysis by different methods is also very high that these biases are readily apparent; with data of lesser quality, they would be masked within a general spread of results.

ACKNOWLEDGEMENTS

The writer is grateful to the Broken Hill Associated Smelters Pty Ltd for supplying the material and to the

analysts of the laboratories listed in Appendix 1 who provided almost 4000 data. Dr. D. Green, ICI, Billingham, provided the neutron activation analyses used to estimate homogeneity. J.A. Templeman of NERC Computer Services assembled the program which enabled the data to be examined in detail. This paper is published with the approval of the Director, British Geological Survey (NERC).

RESUME

Trois concentres de Pb, Zn et Cu, de 25 kg chacun, ont btk preparb. La granulometrie de chaque tichantillon est -90 pm. Apres homogeneisation, les echantillons ont ete repartis dans des petits sachets pourvus d'une mince feuille mktallique ("foil-lined enveloppes") et scelles sous argon. Vingt-sept laboratoires ont participe h I'4tude de ces 6chantillons et plus de 4000 donnees analytiques ont ete reques. Apres une evaluation de ces donnees, des valeurs recommandbes ou probables ont 6te attribuCes a 37 elements dans ces echantillons. Grace a la haute precision atteinte, il a 4t6 possible de noter des differences de performance entre les methodes analytiques employees pour quelques elements. Ceci est notamment le cas du dosage du cuivre par titrh4trie et par 4lectrograVim6trie.

REFERENCES

(1) B. Lister (1978) (7) T.W. Steele (1978) The preparation of twenty ore standards, IGS 20-39. Preliminary work and assessment of analytical data, Geostandards Newsletter, 2: 157-186.

A guide to the reporting of analytical results relating to the certification of geological reference materials, Geostandards Newsletter, 2: 31-33.

(2) G.H. Faye and H.F. Steger (1979) (8) B. Lister (1982) A case study of the ambient oxidation of two zinc-lead (sulphide) reference ores. Talanta, 26: 309-315.

(3) R.R. Brooks, C.R. Boswell and R.D. Reeves (1978)

Evaluation of analytical data: a practical guide for geoanalysts, Geostandards Newsletter, 6: 175-205.

On robust Drocedures. Journal of the American (9) J. Gastwirth (1966)

Elemental abundance data for standard rocks as a measure of the quality of analytical methods, Chemical Geology, 21: 25-38.

Statistical A&ociation, 61: 929-948.

(4) B. Lister and N. Cogger (1986) (10) P.J. Ellis, I. Copelowitz and T.W. Steele (1977) The preparation and evaluation of bastnbite reference Estimation of the mode by the dominant cluster materials, IGS 40 and 41, Geostandards Newsletter, 10: 33-59.

method, Geostandards Newsfetter, 1: 123-130. ~~ ..

(1 1) D.F. Andrews, P.J. Bickel, F.R. Harnpel, P.J. Huber, ( 5 ) P.J. Ellis, J.H. Venter and T.W. Steele (1983) W.H. Rogers and J.W. Tukey (1972)

Robust estimates of location: survey and advances, Princeton University Press, 373 pp.

Estimation of material variation in powdered materials, Geostandards Newsletter, 7: 261-272.

Nickel-copper-cobalt ores SU-1 and UM-1. Their characterization and preparation for use as standard reference materials, Canadian Department samples, Technometrics, 1 1 : 1-21. preparation for use as standard reference materials, Canadian Department of Energy, Mines and Resources, Mine Branch, Technical Bulletin TB 177:

(6) G.H. Faye, W.S. Bowman and Sutarno (1973) (12) F.E. Grubbs (1969)

Procedures for detecting outlying observations in

(1 3) J.A. Filliben (1975) The probability plot correlation coefficient test for normality, Technometrics, 17: 111-1 17. 50 PP.

21

APPENDIX 1. LIST OF LABORATORIES Billiton Research B.V., P.O. Box 38, 6800LH Amhem, The Netherlands Boliden Metal1 A.B., S-932 00 Skelleftehamn, Sweden. Bougainville Copper Ltd, Panguna, Bougainville, Papua- New Guinea. British Geological Survey (formerly Institute of Geological Sciences), Geochemistry Directorate, 64 Gray's Inn Road, London WClX 8NG, United Kingdom. The Broken Hill Associated Smelters Pty Ltd, P.O. Box 219, Port Pirie, South Australia 5540. Centre de Recherches Mindrales, Complexe scientifique, 2700 rue Einstein, Sainte-Foy, QuCbec, Canada GlP 3W8. Charter Consolidated Services Ltd, Wootton Road, Ashford, Kent TN23 2LZ, United Kingdom. Commonwealth Smelting Ltd, St Andrew's Road, Avonmouth, Bristol BSl 1 9HP United Kingdom. The Electrolytic Refining and Smelting Co. of Australia Ltd, P.O. Box 42, Port Kembla, New South Wales 2505, Australia. Geological Survey of India (2 laboratories), 27 Jawaharlal Nehru Road, Calcutta -7-00016 India. Geological Survey of Malaysia, P.O. Box 1015, Ipoh, Perak. Malaysia. Geologisk Institut, Hogskoleringen 6, N7034, Trondheim- NTH, Norway. Government Chemical Laboratories, 30 Plain Street, Perth, Western Australia 6000 Daniel C. Griffith and Co. Ltd, Perry Road, Witham, Essex CM8 3TU, United Kingdom. Johannesburg Consolidated Investment Co. Ltd, P.O. Box

13017, Knights, Tvl 1413 Soulh Africa. Alfred H. Knight Internalional Ltd, Church Road, Seacombe, Wallasea, Merseyside L44 6JG, United Kingdom.

Laboratoire d'Analyscs Bachelet, B-4900 Li&ge (Angleur), 129 rue du Val Benoit, Belgium. Ledoux and Co., 359 Alfred Avenue, Teaneck, N.J. 07666, U.S.A. Metallurgie Hoboken-Overspelt, A. Greinerstraat 14, B- 27 10 Hoboken, Belgium. Mintek, Private Bag X3015, Randburg 2125, South Africa. Newmont Exploration Ltd, P.O. Box 310,44 Briar Ridge Road, Danbury, Conn. 06810, U.S.A. Province of British Columbia, Ministry of Energy, Mines and Petroleum Resources, Analytical Laboratory, 541 Superior Street, Victoria, B.C., Canada V8V 1T7. Rio Tinto Minera S.A., Avenida Francisco Montenegro, Apartado 110, Huelva, Spain. Sampling, Analytical and Management Services, 5 Bishop's Place, Kensington 5066, South Australia. Sherritt Gordon Mines Ltd, Fort Saskatchewan, Alberta, Canada T8L 2P2. Alex Stewart (Assayers) Ltd, Caddick Road, Knowsley Ind. Estate, Merseyside L34 9ER United Kingdom. University of Nottingham, Dept of Geology, University Park, Nottingham NG7, 2RD, United Kingdom. University of Texas, Mineral Studies Laboratory, 10100 Burnet Road, Austin, Texas 78757 U.S.A

APPENDIX 2. LISTINGS OF DATA 1st column: container number

2nd column: results in increasing order of concentration

3rd column: methods - moisture, 1st figure, time 2nd figure, temperature N, under nitrogen 0-0 undifferentiated

elemem

4th column: laboratory number

AA Atomic absorption, emission ELE Electrogravimetry VOL Titrimetry XF X-ray fluorescence GRA Gravimetry POL Polarography COL Colorimetry, photometry ES Emission spectrography ICP Inductively coupled plasma FA Fire assay FAS Fire assay-AAS OTH Undifferentiated

22

... l . . . ........ 2 ........

2740 1149 3052 3052 3055 3055 1190 1190 1104 2743 3064 1199 1621 1627 3068 565 565 567 567 1199 734 812 817 363 1886 1880 1109 1651 1651 915 915 918 918 3133 3137 1657 194 3133 3137 1 5 M 1657 738 1169 1507 1037 1037 1035 1035

0.01000 0.01000 0.01000 0.01000 0.01000 0.01000 0.01200 0.01800 0.02000 0.02000 0.02000 0.02300 0.02500 0.03000 0.03000 0.03000 0.03000 0.03000 0.03000 0.03700 0.04000 0.04000 0.04000 0.04000 0.04500 0.04700 0.05000 0.05000 0.05000 0.05000 0.05000 0.05000 0.05000 0.05500 0.05700 0.06000 0.06000 0.06200 0.06400 0.06700 0.07000 0.07000 0.07000 0.07900 0.26000 0.28000 0.32000 0.36000

IGS 4Wb(%)

3052 3052 3055 3055. 1109 1109 1104 2743 1104 2743 721 726 2740 2743 2740 726 721 734 2743 2740 194 734 738 738 3133 3133 918 3023 915 194 3026 3137 812 1149 2740

70.00000 71.02000 71.24000 71.84000 73.20000 73.40000 73.80000 73.82000 73.90000 73.97000 74.29000 74.32000 74.35000 74.37000 74.40000 74.43000 74.44000 74.46000 74.51000 74.55000 74.55000 74.56000 74.56000 74.58000 74.59000 74.59000 74.60000 74.61000 74.62000 74.63000 74.66000 74.67000 74.67000 74.67000 74.68000

..3..

0-0 0-0 0-0 0-0 0-0 0-0 1-105 1-105 1-100 0-0 N-110 1-105 1-100 1-100 N-110 2-110 2-110 2-110 2-110 1-105 1-100 1-100 1-100 1-105 1-100 1-100 1-100 2-105 2-105 1-100 1-100 1-100 1-100 0-0 0-0 2-105 0-0 0-0 0-0 2 - U 5 2-105 1-100 0-0 2-105 1-100 1-100 1-100 1-100

AA AA AA AA ICP ICP ICP VOL ICP VOL VOL VOL VOL VOL VOL VOL VOL VOL VOL VOL VOL VOL VOL VOL GRA GRA VOL VOL VOL v OL VOL GRA GRA GRA VOL

.4.

20 1

14 14 14 14 24 24 17 20 28 24 2 2

28 23 23 23 23 24 5

37 37 10 8 8

17 4 4

33 33 33 33 12 12 4

31 12 12 7 4 5

29 7

34 34 34 34

14 14 14 14 17 17 17 20 17 20 6 6

20 20 20 6 6 5

20 20 31 5 5 5

12 12 33 15 33 31 1 5 12 37

1 20

... l... ........ 2 ........ IGS 42Pb ... 812 2070 194 2070 817 817 1621 1149 1144 1144 1627 1621 918 3137 1627 478 478 2077 1144 1149 363 915 478 3023 194 3023 1657 3023 475 475 998 2077 1169 475 1880 1880 1880 3026 3026 2743 3026 1507 1169 1507 2743 1507 1507 1500 995 995 998 366 1500 1500 1500 1615 1507 1657 1500 1169 1611 1615 1169 1611 1615 1615 1611 1615 1611 1615 1611 2740 2740 1611 567 565 1611 567 1615 1615 1611 1886 1615 1611 1651 565

74.68000 74.68000 74.68000 74.72000 74.74000 74.74000 74.75000 74.75000 74.76000 74.76000 74.77000 74.78000 74.79000 74.81000 74.83000 74 .a4000 74.84000 74.85000 74.86000 74.89000 74.90000 74.91000 74.93000 74.93000 74.93000 74.94000 74.95000 74.95000 74.97000 74.99000 75.00000 75 . O O O O O 75.00000 75.01000 75.01000 75.01000 75.01000 75.01000 75.02000 75.03000 75.04000 75.04000 75.05000 75.06000 75.08000 75.08000 75.08000 75.09000 75.10000 75.10000 75.10000 75.10000 75.11000 75.11000 75.12000 75.12000 75.14000 75.15000 75.15000 75.15000 75.15000 75.19000 75 .20000 75.20000 75.21000 7 5.26000 75.27000 75.32000 75.34000 75.40000 75.40000 75.42000 75.42000 75.54000 75.58000 75.60000 75.63000 75.66000 75.66000 75.67000 75.78000 75.79000 75.80000 75.82000 75.84000 75.86000

..3..

GRA VOL VOL VOL GRA GRA VOL GRA GRA GRA VOL VOL VOL GRA VOL VOL VOL VOL GRA GRA AA VOL VOL VOL VOL VOL VOL VOL VOL VOL GRA VOL AA VOL VOL VOL VOL VOL VOL VOL VOL VOL AA VOL VOL VOL VOL VOL GRA GRA GRA AA VOL VOL VOL AA VOL VOL VOL AA AA AA AA AA AA A h AA AA AA AA AA VOL VOL AA GRA GRA AA GRA AA AA AA ELE AA AA VOL GRA

.4.

37 19 31 19 37 37 2 1 1 1 2 2

33 12 2 3 3

19 1 1

10 33 3

15 31 15 4

15 3 3 9 19 29 3 8 8 8 15 15 20 15 7

29 7

20 7 7 7 9 9 9 10 7 7 7

27 7 4 7

29 27 27 29 27 27 27 27 27 27 27 27 20 20 27 23 23 27 23 27 27 27

8 27 27 4

23

IGS 42/Pb ... 1886 75 .88000 1037 76.09000 1035 76.16000

76.18000 1035 1037 76.22000 3052 76.41000 1651 76.52000

76.73000 1026 3052 76 -79000

76.86000 1190 1024 77.13000 1199 77.27000 1190 77.36000 1199 77.37000 1026 77.60000 1024 77.60000 1024 77.80000 3055 78.00000

78.16000 305:

IGS 42/Zn(%) 3064 3068 3068 3064 194 194 194 194 194 2077 3055 3055 3052 3052 1035 1037 3026 918 1035 1037 3133 2077 3137 3137 3133 771 726 1621 1627 771 771 776 2077 3023 3023 3023 3026 3026 3026 363 721 776 1144 1149 2070 2070 915 918 2743 2743 1627 776 1144 1149 2740 366 1621 1104 721 726 1169 1109 2740 1190 1199

3.12600 3.12800 3.13000 3.15700 3.40000 3.44000 3.47000 3.48000 3.52000 3.54000 3.61000 3.61000 3.65000 3.68000 3.79000 3.79000 3.80000 3.80000 3.81000 3.83000 3-85800 3.86000 3.86600 3.86600 3 .87000 3.88000 3 -89000 3.89000 3.89000 3.89000 3.89000 3.90000 3.90000 3.90000 3.90000 3.90000 3.90000 3.90000 3.90000 3.90000 3.91000 3.91000 3.91000 3.91000 3.91000 3,91000 3.91000 3.91000 3.92000 3,92000 3.92000 3,92000 3.92000 3.92000 3,93000 3.93000 3.94000 3.95000 3.95000 3.95000 3.95000 3.96000 3.96000 3.96000 3.96000

..3..

ELE AA AA AA AA GRA VOL AA GRA GRA AA GRA GRA G RA AA AA AA GRA GRA

ICP ICP ICP ICP DCP DCP AA AA AA AA AA h A AA AA AA AA AA AA AA AA AA X RF AA AA AA AA AA AA AA AA AA AA XRP AA AA AA AA AA AA AA AA AA AA AA XRF XRP AA AA AA AA AA AA AA AA AA AA AA ICP M AA VOL ICP h A AA AA

.4.

8 34 34 34 34 14 4

30 14 24 30 24 24 24 30 30 30 14 14

28 28 28 28 31 31 31 31 31 19 14 14 14 14 34 34 15 33 34 34 12 19 12 12 12 3 6 2 2 3 3 3

19 15 15 15 15 15 15 10 6 3 1 1

19 19 33 33 20 20 2 3 1 1

20 10 2

17 6 6

29 17 20 24 24

23

... l... ........ 2 ........

IGS 42lZn ... 2077 1024 1109 1169 1104 734 737 737 995 995 998 998 2070 734 1024 1026 2070 915 1026 1169 1169 2077 1199 1024 2743 1657 3064 1651 1190 3068 2740 2743 1651 1657 1500 1507 3064 3068 2740 2077 1500 1507 2070 1026 1500 1500 1500 1507 1507 1507 2070

IGS 4UCu (%)

3052 3055 3055 3052 1169 1104 1109 726 1627 3055 194 194 1500 1500 1507 1109 721 726 1621 1627 737 918 1035 1037 1037 3052 3055 194 3133 1500 1500

3.97000 3.97500 3.99000 3.99000 4 .OOOOO 4.00000 4 .OOOOO 4 .OOOOO 4 .OOOOO 4.00000 4.00000 4 .OOOOO 4 .OOOOO 4.02000 4.02200 4 .a2300 4.03000 4 .a3000 4.03500 4.08000 4.08000 4.11000 4.11000 4.11700 4.13000 4.13000 4.13400 4.14000 4.14000 4.14600 4.15000 4.15000 4.15000 4.15000 4.15000 4.15000 4.15300 4.15900 4.16000 4.16000 4.17000 4.17000 4.18000 4.18000 4.19000 4.19000 4.19000 4.19000 4.21000 4.21000 4.29000

0.82500 0.83500 0.84500 0.85000 0.88000 0.92000 0.92000 0.92000 0.92000 0.92000 0.92000 0.92000 0.92400 0.92400 0.92400 0.93000 0.93000 0.93000 0.93000 0.93000 0.93000 0.93000 0.93000 0.93000 0.93000 0.93000 0.93000 0.93000 0.93300 0.93400 0.93400

..3..

AA VOL ICP VOL ICP VOL VOL VOL AA A A AA A A A A VOL VOL VOL A A AA VOL VOL VOL A A AA VOL AA VOL ICP VOL AA ICP AA AA VOL VOL AA A A ICP ICP AA AA AA A A A A VOL AA AA AA AA AA AA AA

AA AA AA AA AA ICP ICP A A A A XF A A DCP A A AA AA ICP AA AA AA AA AA AA A A A A A A XF X F A A A A A A AA

.4.

19 30 17 29 17 5 5 5 9 9 9 9

19 5

30 30 19 33 30 29 29 19 24 30 20 4

28 4

24 28 20 20 4 4 7 7

28 28 20 19 7 7

19 30 7 7 7 7 7 7

19

14 14 14 14 29 17 17 6 2 14 31 31 7 7 7 17 6 6 2 2 3

33 34 34 34 14 14 31 12 7 7

... l... ........ 2 ........

IGS 4 2 0 ... 1507 1507 1104 721 734 734 737 99s 995 998 1500 1507 1035 194 3133 1507 3137 3137 1621 998 915 3052 1169 1026 108 1199 363 194 366 1024 2743 108 108 1657 2070 2077 918 1190 1199 1026 1026 1024 2743 1651 2070 2077 2077 1190 2740 1651 1657 1149 2070 2070 2077 2077 2740 1144 1144 1149 2077 3064 915 3064 3068 3068 2070 2070 2740 2740 2743 2743

IGS 42lS (%)

1190 1190 1199 1199 3064 3052 1169 3055 1169 3068

0.93400 0.93400 0.94000 0.94000 0.94000 0.94000 0.94000 0.94000 0.94000 0.94000 0.94000 0.94000 0.94000 0.94000 0.94500 0.94500 0.94700 0.94800 0.95000 0.95000 0.95000 0.95000 0.95000 0.95900 0.96000 0.96000 0.96000 0.96000 0.96100 0.96100 0.96400 0.97000 0.97000 0.97000 0.97000 0.97000 0.97000 0.97000 0.97000 0.97000 0.97 100 0.97200 0.97600 0.98000 0.98000 0.98000 0.98000 0.98000 0.98400 0.99000 0.99000 0.99000 0.99000 0.99000 0.99000 0.99000 0.99200 1 .ooooo 1 .ooooo 1 .ooooo 1.00000 1.00700 1.01000 1.01 100 1.01200 1.01900 1.02000 1.05000 1.07000 1.08000 1.09000 1.10000

11.60000 11.62000 12.04000 12.47000 14.24000 14.30000 14.34000 14.36000 14.41000 14.41000

..3..

AA AA ICP AA AA AA AA AA AA AA AA A A AA AA AA AA A A AA AA A A A A X F A A A A AA AA AA DCP AA AA AA AA AA AA A A AA A A AA AA AA AA AA A A A A A A XF XF A A AA A A AA A A A A X F AA A A AA AA AA A A AA ICP AA ICP ICP ICP A A XF A A A A A A AA

VOL VOL VOL VOL OTE VOL GRA VOL GPA OTE

14.

7 7

17 6 5 5 5 9 9 9 7 7

34 31 12 7

12 12 2 9

33 14 29 30 3

24 10 31 10 30 20 3 3 4

19 19 33 24 24 30 30 30 20 4

19 19 19 24 20 4 4 1

19 19 19 19 20 1 1 1

19 28 33 28 28 28 19 19 20 20 20 20

24 24 24 24 28 14 29 14 29 28

... l...

IGS 421s ... . .. . .. . .2... , .. . .

1169 1169 3052 3055 1199 194 194 194 194 1035 3068 1037 1657 1035 1621 1190 1024 1169 1627 1507 1627 1037 1500 3137 3133 1621 3137 1998 1998 3133 2740 2743 2743 1657 1144 2740 1026 478 2743 1651 1651 1149 478 475 734 475 1994 1994 565 565 567 478 1144 1500 1507 475 726 737 1149 363 567 721 1500 1507 915 734 918 726 737 915 721 918 366

14.46000 14.46000 14.49000 14.53000 14.68000 14.72000 14.76000 14.78000 14.80000 14.83000 14.83000 14.84000 14.85000 14.87000 14.88000 14.90000 14.90000 14.91000 14 -92000 14.92000 14.93000 14.93000 14.94000 14.95000 14.96000 14.99000 14.99000 15 .OOOOO 15.00000 15.01000 15.04000 15.07000 15.07000 15.09000 15.09000 15.10000 15.10000 15.12000 15.13000 15.13000 15.14000 15.15000 15.17000 15.18000 15.18000 15.20000 15.20000 15.20000 15.20000 15.20000 15.20000 15.22000 15.22000 15.22000 15.23000 15.26300 15.27000 15.27000 15.28000 15.30000 15.30000 15.33000 15.35000 15.35000 15.38000 15.39000 15.39000 15.40000 15.41000 15.42000 15.52000 15.62000 15.70000

IGS 421Ag (ppm)

1026 1037 1035 1035 1037 1024 363 1026 1024

1030.00000 1045.00000 1050.00000 1050.00000 1050.00000 1050.00000 1060.00000 1060 .OOOOO 1060.00000

..3..

GRA GRA VOL VOL GRA GRA GRA GRA G RA GILA OTE GRA GRA GRA GRA GRA OTE GRA GRA GRA GRA GRA GRA GRA GRA GRA GRA POL VOL GRA GRA GRA GRA GRA GRA GRA OTE GRA GRA GRA GRA GRA GRA GRA GRA GRA VOL VOL ICP ICP ICP GRA GRA GRA GRA GRA GRA GRA GRA POL ICP GRA GRA GRA GRA GRA GRA GRA GRA GRA GRA GRA VOL

AA AA AA AA AA AA AA AA AA

.4.

29 29 14 14 24 31 31 31 31 34 28 34 4

34 2

24 30 29 2 7 2

34 7

12 12 2

12 19 19 12 20 20 20 4 1

20 30 3

20 4 4 1 3 3 5 3

19 19 23 23 23 3 1 7 7 3 6 5 1

10 23 3 7 7

33 5

33 6 5

33 6

33 10

30 34 34 34 34 30 10 30 30

24

366 1026 1024 2743 2743 1651 1657 1657 2740 2070 2077 1651 2740 1169 1169 2077 915 918 918 125 12 5 1627 1621 1994 1621 1998 1627 125 1880 3026 726 721

2743 1880 721 475 3023 3026 726 478 475 3023 194 478 1886 2740 3133 3133 3137 3137 194 125 2740 2743 1507 1507 2070 1507 1886 1500 1500 1500 1500 1507 1507 915 1500 194 3055 3052 3052 3055 995 995 998 998

1090.00000 1110.00000 1130.00000 1140.00000 1170.00000 1172.00000 1175.00000 1176.00000 1180.00000 1180.00000 1180.00000 1182.00000 1190.00000 1190.00000 1193 . O O O O O 1200.00000 1200.00000 1200.00000 1200.00000 1202.00000 1205.00000 1206.00000 1207.00000 1209.00000 1210.00000 1212.00000 1213.00000 1216 .OOOOO 1227 .a9999 1232.00000 1235 . O O O O O 1240.00000 1240.00000 1240.39999 1241.00000 1242.00000 1242.00000 1242 . O O O O O 1243.00000 1245.00000 1250.00000 1250.00000 1250.00000 1251.00000 1252.39999 1260.00000 1260.00000 1260.00000 1260.00000 1260.00000 1260.00000 1265.00000 1270.00000 1270.00000 1270.00000 1270.00000 1280 .ooooo 1280.00000 1289.70000 1290.00000 1290 . O O O O O 1290.00000 1290.00000 1290.00000

1300.00000 1320.00000 1350 .OOOOO 1366.00000 1369.00000 1391.00000 1423.00000 1700.00000 1700.00000 1700.00000 1700.00000

i3oo.oooon

IGS 421Au (ppm) 475 0.70000 478 0.70000 478 0.80000 72 1 0.80000 721 0.80000 726 0.80000

..3..

AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA F A F A FA FA F A F A F A F A F A F A FA F A F A

AA P A F A F A F A FA F A F A F A F A AA FA FA Al l A h AA AA AA AA F A AA AA AA AA AA AA F A AA AA AA AA AA AA AA AA ES AA AA AA AA AA AA AA AA

PAS PAS PAS F A FA FA

.4.

10 30 30 20 20 4 4 4

20 19 19 4

20 29 29 19 33 33 33 5 5 2 2

19 2

19 2 5 8

15 6 6 20 8 6 3

15 15 6 3 3 15 31 3 8

20 12 12 12 12 31 5

20 20 7 7

19 7 8 7 7 7 7 7 7

33 7

31 14 14 14 14 9 9 9 9

3 3 3 6 6 6

... 1 ... , .. . .. . .2... .... .

IGS 4UAu ... 726 1997 475 1621 1621 1627 1627 1994 1169 1169 363

IGS 42/Fe(%)

3055 3055 3052 3052 108 108 108 2077 2077 2070 1026 3068 3064 3068 194 3064 1621 1627 1190 1199 1026 1199 1024 1621 1657 1190 194 1657 1024 1104 1109 2740 2743 2743 1627 2740 2070 1109 3064 3068 1651 363 567 1104 366 567 565 565 1651 1035 1035 1037 1037 1024 995 995 2740 998 998 3068 1026 2740 1169 3064 2743 2743 567 5b5 1169 567 1998

0.80000 0.80000 0.90000 0.90000 0.90000 0.90000 1.00000 I * 00000 I . 80000 1.90000 8.10000

1.64000 1.64000 1.65000 1.66000 1.67000 1.67000

1.86000 1.90000 1.94000 1.95000 1.9C200 1.97200 1.98000 1.98000 1.98100 1.99000 1.99000 1.99000 1.99000 1.99000 2 .ooooo 2.00000 2.01000 2.01000 2.01000 2.01000 2.02000 2 * 02000 2.03000 2.03000 2.03000 2.03000 2.03000 2.03000 2.04000 2.04000 2.05000 2.05400 2.05700 2.06000 2.06000 2.06000 2.07000 .2.07000 2.07000 2.07000 2.07000 2.09000 2 * 10000 2.10000 2.10000 2.11000 2.12000 2.19000 2.19000 2.20000 2.20000 2.20000 2.21700 2.22000 2.23000 2.23000 2.25600 2.27000 2.27000 2.27000 2.34000 2.40000 2.40000 2.45000

1.69000

..3..

F A F A PAS PAS F A S PAS PAS F A F A F A ICP

AA AA A h AA AA AA AA XF XP X P AA ICP ICP ICP AA ICP AA AA AA AA AA AA AA AA v OL AA AA VOL AA ICP ICP AA A h AA A h AA X F ICP ICP ICP VOL AA BS ICP AA zs ES ES VOL AA AA AA AA AA VOL VOL POL VOL VOL ICP AA VOL AA ICP VOL VOL VOL VOL AA VOL AA

.4.

6 19 3 2 2 2 2

19 29 29 10

14 14 14 14 3 3 3 19 19 19 30 28 28 28 31 28 2 2

24 24 30 24 30 2 4

24 31 4 30 17 17 20 20 20 2

20 19 17 28 28 4 10 23 17 10 23 23 23 4

34 34 34 34 30 9 9

20 9 9

28 30 20 29 28 20 20 23 23 29 23 19

... l... . . . . . . . 2... . . . . .

IGS 42/Fe ... 565 2.48000 1998 2.49000 1994 2.76000 1994 2.95000

IGS 42/Mn(%)

91s 918 915 918 2740 2743 2743 1037 2740 1037 2743 2740 2740 2743 1651 1651 1657 1657 1035 3068 3064 3064 3068 1035 3068 3068 3064 3064 2653 2651

IGS 42/ca(%)

3068 3068 3064 3064 2651 2653 3068 3064 3068 3064 1109 1109 1104 1104

0.14000 0.15000 0.16000 0.16000 0.18000 0.18500 0.18800 0.19000 0.19400 0.20000 0.20100 0.20600 0.20900 0 -20900 0.21000 0.21000 0.21000 0.21000 0.21000 0.21340 0.21470 0.21570 0.21680 0.22000 0.22170 0.22280 0.22670 0.24280 0.25000 0.27000

0.10190 0.10200 0.10300 0.10300 0.11000 0.11000 0.11320 0.11490 0.11670 0.12050 0.36000 0.36000 0.37000 0.37000

1104 1109 1104 1109 1621 1621 1627 1627 2070 2070 2740 2077 2077 2740 194 1190 565 2653 998 1190 2743 995 194 565 567 2651

0.73000 0.73000 0.75000 0.75000 1.01000 1.02000

1.03000 1.03000 1.05000 1.08000 1.08000 1.08000 1.11000 1.12000 1.13000 I. 13000 1.14000 1.16000 1.16000 1.18000 1.18000 1.18000 1.18000 1.18000 1.18000

i.02000

.,3..

VOL AA AA AA

AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA ICP ICP ICP ICP AA ICP ICP LCP ICF X F X P

I CP ICF ICF ICP X F X F ICP ICP ICP ICP ICP ICP ICP ICP

ICP ICP ICP ICP GRA CRA GRA GRA COL COL GRA COL COL GRA C I A GRA CRA X I CRA GRA CRA C I A CRA GRA GRA X P

.4.

23 19 19 19

33 33 33 33 20 20 20 34 20 34 20 20 20 20 4 4 4 4

34 28 28 28 28 34 28 28 28 28 32 32

28 28 28 28 32 32 28 28 28 28 17 17 17 17

17 17 17 17 2 2 2 2

19 19 20 19 19 20 31 24 23 32 9

24 20 9

31 23 23 32

25

..3.. .4. ... l... ........ 2... ..... ..3.. .4. ... 1 ... ........ 2 ........ ..3.. .4.

IGS 4UCd IGS 42/Sb(%) ... 164.00000 164 . O O O O O 164.00000 165 .OOOOO 165 . O O O O O 165 . O O O O O 167 . O O O O O 167 . O O O O O 167 . O O O O O 167 . O O O O O 167 . O O O O O 168.00000 168 . O O O O O 168 . O O O O O 168.00000 169.00000 169 .OOOOO 169.00000 170 . O O O O O 170.00000 170 .OOOOO 170 .OOOOO 170.00000 170 . O O O O O 170 .OOOOO 170 .OOOOO 170.00000 172 . O O O O O 172.00000 172 .OOOOO 173 . O O O O O 17 4 . O O O O O 174 . O O O O O 175.00000 17 6.00000 176.00000 177 .OOOOO 177 . O O O O O 178.00000 178 . O O O O O 179 . O O O O O 179.00000 180.00000 180.00000 180 .ooooo 180.00000 180.00000 180.00000 180 .ooooo 180 .ooooo 180 .ooooo 180 .ooooo 180 .ooooo 180.00000 181.0000b 181.00000 181.00000 190.00000 190.00000 190.00000 190.00000 190.00000 190.00000 190 .ooooo 190 .ooooo 190.00000 190.00000 190.00000 190.00000 196.00000 198 .ooooo 199 .ooooo 200 .ooooo 200 .ooooo 200 .ooooo 200 .ooooo 200 .ooooo 200 .ooooo 200 .ooooo 200 .ooooo 200.00000 300 . O O O O O 300 . O O O O O 300 . O O O O O 300.00000

1 7 7 7 7 7 7 7 7

10 10 7

12 12 12 12 25 25 30 30 2 9 9 9 9

32 5 5

30 30 5 3 3 3 2 2 4 4

32

28 24 28 10 28 20 24 9 9

28 23 10 19 19

1190 1190 1199 1500 1500 1500 2077 1500 1507 1507 1035 2077 1500 1507 1507 2070 2070 1037 2740 2743 1627 1657 737 2077 1507 1035 363 2740 2743 1037 2070 2740 2743 2743 3137 3137 2740 2077 3133 3133 2070 3052 1621 1621 1627 771 771 771 776 734 734 1144 1149 366 3052 3055 3055 776 776 1651 1651 1657 737 1144 1149 1024 1026 1024 1024 3064 3068 3064 995 995 998 998 3068 1026 1026 194 194 721 721 726 726

AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA A h AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA I C P I C P I C P AA AA AA AA I C P AA AA AA AA AA AA AA AA

24 24 24 7 7 7

19 7 7 7

1500 1500 1507 1507 1507 1500 1507 1500 363 366 1500 3133 3133 3137 3137 209 209 1026 1026 1621 995 995 998 998 2651 734 734 1026 1024 737 108 108 108 1621 1627 1651 1657 2653 737 1024 1026 1627 1651 1657 2070 3064 194 2070 3064 3068 2077 3068 2077 2070 2077 2070 194 2077 1169 1169 2740 2740 2743 2743 194

0.15600 0.15700 0.16600 0.17100 0.17500 0.18300 0.18400 0.19000 0.19500 0.19500 0.19700 0.21000 0.21200 0.21200 0.21200 0.22000 0.22000 0.22800 0.23200 0.24000 0.24000 0.21000 0.24000 0.24000 0.24000 0.24100 0.24300 0.24300 0.24400 0 . 2 4 6 0 0 0.25000 0.25000 0.25000 0.25000 0.25000 0.25000 0.25000 0.25000 0.25200 0.25500 0.25800 0.26000 0.26000 0.26000 0.26000 0.26000 0.26000 0.26100 0.26100 0.26300 0.26600 0.26600 0.26700 0.2flOO 0.27200 0.27300 0.28000 0.28400 0.29000 0.29000 0.31000 0.31000 0.31000 0.31000 0.31000

3064 1199 3068 363 3064 2743 1199 995 998 3068 567 363 2077 2077 2070 108 2070 108 108

1.19100 1.20000 1.21100 1.22000 1.22600 1.23000 1.23000 1.24000 1.24000 1.24400 1.25000 1.29000 1.34000 1.35000 1.36000 1.38000 1.38000 1.41000 1.42000

I C P GRA I C P AA I C P GRA GRA G RA GRA I C P GRA AA GRA GILA GRA GRA GBA GRA GRA

AA AA.

p:: AA AA AA AA AA AA AA VOL VOL VOL VOL XP XP AA AA AA AA AA AA AA XP AA AA AA AA AA A h AA AA AA AA AA AA XF A h AA AA AA AA AA AA I c e AA AA I C P I C P AA I C P AA AA AA AA AA AA I C P I C P ES ES ES ES ES

34 19 7 7 7

19 19 34 20 20 2 4 5

19 7

34 10 20 20 34 19 20 20 20 12 12 20 19 12 12 19 14 2 2 2 3 3 3 3 5 5 1 1

10 14 14 14 3 3 4 4 4 5 1 1

30 30 30 30 28 28 28 9 9 9 9

28 30 30 31 31 6 6 6 6

19 3

19 3 3

IGS 42/As(%)

363 1627 734 366 1621 1627 737 737 2653 1507 1500 2070 108 108 108

0.09300 0.10000 0.10000 0.10000 0.11000 0.11000 0.11000 0.11000 0.11000 0.11500 0.11800 0.11900 0.12000 0.12000 0.12000 0.12000 0.12000 0.12000 0.12000 0.12000 0.12000 0.12000 0.12000 0.12000 0.12000 0.12100 0.121oa 0.12100 0.12200 0.12500 0.12800 0.12900 0.13000 0.13200 0.13200 0.13300 0.18000 0.20000 0.21000 0.21200 0.22000 0.23000 0.23200 0.26000 0.27000 0.28000

I c e VOL VOL I C P VOL VOL VOL VOL XI AA AA VOL AA AA AA VOL P O L VOL VOL VOL VOL VOL A h AA XP AA AA AA AA VOL VOL VOL VOL VOL VOL AA I C P AA ES AA AA I C P AA COL COL COL

10 2 5 10 2 2 5 5

32 7 7

19 3 3 3 6 6 6 6 2 5

721 721 726

5 30 30 2 726

1621 734 2077 1500 1500 2651 1500 1507 1507 1507 2070 3133 3137 2077 3133 3137 1500 1169 1024 194 1024 1026 1169 1026 194 194 194

4 4 19 28 31 19 28 28

19 7 7

32 7 7 7 7 19 12 12 19 12 12 7

29 30 31 30 30 29 30 31 31 31

19 28 19 19 19 19 31 19 29 29 20 20 20 20 31

IGS 42/Co (ppm)

3 3

28

108 108 3064 3068 3068 108 915 915 918 918 3064 1621 1627 1621 1627

50 . O O O O O 50.00000 52.60000 56.40000 57.40000 60.00000 60.00000 60.00000 60.00000 60.00000 60.10000 62 .OOOOO 64.00000 67 .OOOOO 69 .OOOOO

ES ES I c e I C P I c e ES AA AA AA AA I C P AA AA AA AA

IGS 42/Cd@pm) 28 28 3

33 33 33 33 28 2 2 2 2

915 915 915 918 915 918 918 918 209 209 1199

110.00000 110 .ooooo 115 . O O O O O 11 5.00000 115.00000 115 .OOOOO 120.00000 120.00000 150.00000 150.00000 162.00000

AA AA AA AA AA AA AA AA XP XP AA

3 3 33 3 3 33 33 33 33 33 25 25 24

26

... l... .... :...2 ........ ..3..

IGS 42ICo ... 2077 207 7 2743 2070 2070 2077 2077 2743 1035 1035 1038 3055 2740 1038 2070 2070 3055 3052 2740 3052 2743 2740 2740 2743 363 366 1169 1169

7 9.00000 80.00000 81 .ooooo 81 .ooooo 82 .ooooo 82.00000

84.00000 84 .OOOOO 84 .OOOOO 84.00000 84 .50000 85.00000 86.00000 87 .OOOOO 87 .OOOOO 87.30000 87.50000 88 .ooooo 88.70000 89 .ooooo 90.00000 92 . O O O O O 94.00000 120.00000 120.00000

1190.00000 1193.00000

a3.ooooo

IGS 421Ni (ppm)

2743 915 915 918 918 2743 2740 2740 3068 2740 2743 2743 3064 3068 3064 2740 1169 1169

25 .OOOOO 25.00000 25.00000 25 .OOOOO 25 .OOOOO 28.0000.0 29 .OOOOO 30.00000 34 .OOOOO 35.00000 35 .OOOOO 35.00000 36.20000 36.90000 37.50000 39 .OOOOO

100 .ooooo 100.00000

IGS 42/31 (ppm)

108 108 108 363 366 2740 209 209 3064 3068 3064 3068 2740 2743 2743

50.00000 50.00000 80 .ooooo 96 - 00000 98 .ooooo

100 .ooooo 100 .ooooo 100.00000 102 .ooooo 103 .OOOOO 104 .OOOOO 106 .OOOOO 110 .ooooo 130.00000 140.00000

1621 1627 1627 2077 363 1621 2070 2070 2077 366

5 .OOOOO 5.00000 5.00000 5 .OOOOO 5.70000 6 .OOOOO 6.00000 6 .OOOOO 6 .OOOOO 6.10000

A A AA A A AA Ah AA AA AA AA AA AA A A AA AA AA AA AA Ah AA AA Ah AA AA AA AA A A AA AA

AA AA AA AA AA AA A A AA XCP A 4 AA A A ICP Ice ICP A A ICP ICP

ES ES ES *A AA ES X F X P ICP ICP ICP ICP ES ES ES

F A A FAA F A A F A A F A A F A A F A A F A A F A A F A A

.4.

19 19 20 19 19 19 19 20 34 34 34 14 20 34 19 19 14 14 20 14 20 20 20 20 10 10 29 29

20 33 33 33 33 20 20 20 28 20 20 20 28 28 28 20 29 29

3 3 3 10 10 20 25 25 28 28 28 28 20 20 20

2 2 2

19 10 2

19 19 19 10

... l...

IGS 43M20 (9'0)

. . . . . . .2. .. . . . . .

903 906 2077 1337 903 906 2075 1025 1025 2654 2445 1164 1167 1023 2314 3052 3052 2443 1500 1023 2319 1646 812 1141 3020 3020 3023 3023 816 3056 1144 305 308 3056 1181 1644 1507 1332 151 1337 475 479 724 1332 724 3130 3139 779 727 727 774 1190 1199 1190 1199

0.00600 0.00600 0.01000 0.01000 0.01200 0.01900 0.02000 0.03000 0.03000 0.03000 0.04000 0.04000 0.04000 0.04000 0.04000 0.04100 0.04600 0.05000 0.05000 0.05000 0.05000 0.06000 0.06700 0.06900 0.07000 0.07000 0.07000 0.07000 0.07200 0.07400 0.07900 0.08000 0.08000 0.08300 0.08700 0.09000 0.09000 0.09000 0.09000 0.10000 0.10000 0.10000 0.11000 0.11000 0.11900 0.12000 0.13000 0.14000 0.14600 0.15260 0.18000 0.58000 0.60000 0.65000 0.66000

IGS 43Zn (95)

3056 3052 3052 3056 1181 1332 1337 1332 1337 1382 3061 3064 1188 2654 3130 1382 3130 1644 1646 774 2654 1382 947 774 779 941

47.41000 47.74000 48.27000 49.44000 50.20000 50.26000 50.27000 50.29000 50.43000 50.46000 50,55000 50.56000 50.60000 50.62000 50.63000 50.65000 50.67000 50.70000 50.70000 50.70000 50.70000 50.70000 50.72000 50.74000 50.75000 50.76000

..3..

2-110 2-110 0-0 1-100 2-110 2-110 0-0 0-0 0-0 0-0 0-0 0-0 0-0 0-0 N-110 1-105 1-105 0-0 1-100 0-0 N-110 1-100 0-0 2-105 2-105 2-105 2-105 2-105 0-0 1-105 2-105 1-100 1-100 1-105 0-105 1-100 1-100 1-100 0-0 1-100 1-110 1-110 0-0 1-100 0-0 2-100 2-100 1-100 0-0 0-0 1-100 1-100 1-100 1-100 1-100

V O L V O L V O L P O L A A V O L v O L V O L V O L A A X P X F A A V O L V O L A A V O L ICP ICP V O L V O L A A v O L V O L V O L V O L

.4.

23 23 1

3 3 23 23

1 14 14 29 20 15 15 14 28 24 24 20 2

14 28 17 26 7 4 4 4 4

26 24 7

37 37 24 10 17 2

33 31 33 30 30 12 33 12 8 8 5 '

12 12 5

34 34 34 34

24 24 24 24 10 33 33 33 33 27 19 19 10 29 8

27 8 17 17 5

29 1

27 3 5 5 3

.. ... I . . . ........ L ........

IGS 431Zn ... 941 3130 941 733 737 1190 1385 1199 3064 3064 947 733 779 737 151 3061 1644 2075 947 1507 1167 151 1500 3061 3064 3064 2654 2075 1167 2077 1164 1382 1500 1164 2075 1164 1507 3061 1646 1164 1167 2077 1167 2445 2075

151 2077 151 1385 305 3061 1382 1385 1199 305 2445 2075 2077 2077 2445 2654 2654 1190 1385 2445 308 724 724 1144' 1144 1144 727 727 308 1141 1141 2443 903 1385 2445 1141 1141 1141 1144

50.76000 50.76000 50.80000 50.80000 50.80000 50.81000 50.81000 50.82000 50.84000 50.84000 50.85000 50.85000 50.85000 50 .a7000 50.88000 50.89000 50.90000 50.90000 50.91000 50.92000 50.92000 50.92000 50.93000 50.93000 50.93000 50.93000 50.93000 50.94000 50.94000 50.95000 50.96000 50.96000 50.97000 50.97000 50.98000 50.98000 50.99000 50.99000 51.00000 51 .OOOOO 51.00000 51.01000 51.01000 51.02000 51.02000

S1.03000 51.04000 51.04000 51.04000 51.05000 51.05000 51.05000 51.05000 51.07000 51.08000 51.09000 51.09000 51.09000 51.09000 51.10000 51.10000 51.10000 51.12000 51.13000 51.14000 51.14000 51.15000 51.15000 51.15000 51.15000 51,15000 51.16000 51.16000 51.16000 s1 .l8000 51.18000 51.21000 51.21000 51.21000 51.22000 51.22000 51.22000 51.22000 51.22000

..3..

V O L V O L V O L V O L V O L A A A A A A V O L X F v O L V O L V O L v O L A A V O L Ice v O L V O L V O L VOL AA V O L V O L V O L V O L V O L P O L V O L P O L V O L A A V O L V O L V O L V O L V O L V O L ICP V O L V O L V O L V O L V O L V O L

AA V O L A A AA V O L X F A h A A AA V O L V O L V O L V O L V O L V O L V O L V O L AA AA V O L V O L V O L v O L V O L V O L V O L V O L V O L V O L VOL V O L V O L GRA AA V O L V O L V O L V O L V O L

.4.

3 8 3 6 6

34 27 34 19 19 3 6 5 6

31 19 17

1 3 2 15 31 2 19 19 19 29

1 15

1 15 27 2

15 1

15 2

19 17 15 1 5 1

15 20 1

31 1

31 27 37 19 27 27 34 37 20 1 1 1

20 29 29 34 27 20 37 12 12 7 7 7 12 12 37

t 7

20 23 27 20 7 7 7 7

27

... I... . ..... ..2 ........

IGS 43lZn. .. 1144 3020 906 906 1385 1382 1382 2443 2443 903 2443 1385 3023 2443 1382 2443 479 3023 479 1385 1382 1385 2445 3020 479 2314 2314 475 475 475 2319 1025 2319 1023 1023 1025

5 1.22000 51.23000 51.23000 51.26000 51.27000 51.32000 51.33000 51.35000 51.37000 51.31000 51.40000 51.40000 51.42000 51.44000 51.44000 51.50000 51.53000 51.55000 51.5500'0 51.64000 51.68000 51.69000 51.73000 51.96000 52.00000 52.02000 52.19000 52.33000 52.47000 52.53000 52.74000 52.80000 52.89000 52.90000 53 .OOOOO 53.20000

IGS 43/Pb(%)

1023 3052 1025 1025 3056 1023 724 3052 727 724 127 721 724 1025 3056 724 941 941 3061 3061 3064 941 947 94 7 3061 1023 947 2443 3061 3061 3064 2443 2445 2445 1141 1141 1144 1144 1025 727 2075 2075 1141 1144 1144

0.93200 0.94400 0.94700 0.94900 0.95200 0.95200 0.95600 0.95800 0.96000 0.96500 0.96800 0.96800 0.97400 0.98000 0.98400 0.98700 0.99000 0.99000 0.99000 0.99000 0.99000 1.00000 1 .ooooo 1 .ooooo 1.00000 1.00000 1.01000 1.01000 1.01000 1.01000 1.01000 1.02000 1.02000 1.02000 1.02000 1.02000 1.02000 1.02000 1.02000 1.02100 1.03000 1.03000 1.03000 1.03000 1.03000

..3..

VOL VOL GRA G RA AA Ah AA VOL VOL G RA VOL AA VOL VOL AA VOL AA VOL AA AA AA AA VOL VOL AA ICP ICP AA AA AA ICP AA ICP AA AA AA

AA GRA AA AA GRA AA GRA GRA GRA Ah AA AA AA GRA GRA GRA AA AA AA AA AA AA AA AA AA GRA AA AA AA AA AA AA Ah AA AA AA AA AA GRA GRA AA AA AA AA AA

.4.

7 4

23 23 27 21 27 20 20 23 20 27 4

20 27 20 30 4 30 27 27 27 20 4

30 28 28 30 30 30 28 14 28 14 14 14

14 24 14 14 24 14 12 24 12 12 12 12 12 14 24 12 3 3

19 19 19 3 3 3

19 14 3

20 19 19 19 20 20 20 7 7 7 7

14 12 1 1 7 7 7

... I...

IGS 43Pb ... . .. . . . . .2... . . .. .

1144 2654 816 2443 2443 2445 2445 2077 2077 1141 1141 1023 812 1500 1332 1181 812 1199 2654 816 1500 1507 151 3064 1332 1337 1188 1507 1190 151 475 3064 3064 3064 419 1190 1199 1337 419 479 415 475 733 3020 3061 733 137 3023 737 3023 1644 3020 1644 1646 1646 779 779 774 774

IGS 43/Cu(%)

1144 1146 1507 3064 94 1 941 941 1500 1507 1332 3061 947 947 947 1500 3061 3061 3064 1190 1190 1199 1199

1.03000 1.03000 1.03300 1.04000 1.04000 1.04000 1.04000 1.04000 1.04000 1.04000 1.04000 1.04000 1.04200 1.05000 1.05000 1.05000 1.05800 1.06000 1.06000 1.06300 1.07000 1.07000 1.07000 1.08000 1.08000 1.08000 1.08000 1.09000 1.09000 1.09000 1.09100 1.10000 1 * 10000 1.10000 1.10400 1.11000 1.11000 1.12000 1.12200 1.12600 1.13600 1.13700 1.15000 1.15000 1.15000 1.16000 1.16000 1.16000 1.17000 1.24000 1.29000 1.29000 1.31000 1.32000 1.33000 1.37000 1.37000 1.38000 1.39000

0.10000 0.10000 0.10000 0.10000 0.11000 0.11000 0.11000 0.11000 0.11000 0.11000 0.11300 0.12000 0.12000 0.12000 0.12000 0.12000 0.12000 0.12000 0.12000 0.12000 0.12000 0.12000

..3..

AA ICP AA AA AA AA AA AA AA AA AA GRA AA AA AA AA AA AA ICP AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA ICP AA ICP I CP ICP AA AA AA AA

ICP ICP AA XP AA AA AA AA AA AA AA AA AA A A AA XF XF XP AA AA AA AA

.4.

7 29 26 20 20 20 20 1 1 7 7

14 26 2

33 10 26 34 29 26 2 2

31 19 33 33 10 2

34 31 30 19 19 19 30 34 34 33 30 30 30 30 6 4

19 6 6 4 6 4

17 4

17 17 17 5 5 5 5

17 17 2

19 3 3 3 2 2

33 19 3 3 3 2

19 19 19 3 4 34 34 3 4

... l...

IGS 431Cu ... ....I... 2... , .. ..

1023 151 3061 1025 1025 1023 3052 3064 3052 3056 812 3064 2314 3020 3020 2071 3064 3064 1141 1141 1144 1144 1332 1337 1337 3056 2654 151 151 2314 2075 2077 724 816 816 2075 2319 2319 727 812 1141 2443 2443 724 727 3061 1144 2443 479 1181 1188 479 479 475 475 1144 1146 3023 151 2445 2445 475 2445 2445 2443 3023 3061 2654

IGS 43/S (%)

2654 2654 2654 3052 3056 1025 1023 3056 1023 1025 3052 3052 3052 3056

0.12000 0.12000 0.12100 0.12100 0.12100 0.12300 0.12600 0.12800 0.12800 0.12800 0.12900 0.12900 0.12940 0.13000 0.13000 0.13000 0.13000 0.13000 0.13000 0,13000 0.13000 0.13000 0.13000 0. P3000 0.13000 0.13000 0.13000 0.13000 0.13000 0.13070 0.13100 0.13100 0.13200 0.13200 0.13200 0.13200 0.13250 0.13290 0.13300 0.13300 0.13300 0.13400 0.13400 0.13400 0.13400 0.13400 0.13400 0.13500 0.13500 0.13600 0.13600 0.13600 0.13700 0.13900 0.13900 0.14000 0.14000 0.14000 0.14000 0.14200 0.14300 0.14300 0.14400 0.14500 0.14600 0.15000 0.15000 0.15000

28.12000 28.20000 28.33000 29.80000 30.18000 30.29000 30.53000 30.57000 30.65000 30.80000 31 .20000 31.30000 31.50000 31.50000

..3..

A A AA A A A A AA AA AA AA AA AA AA AA I CP v OL VOL A A AA AA AA AA AA AA AA AA AA AA A A A A ES ICP AA AA AA AA AA A A ICP ICP AA AA A A A A A A AA AA AA AA AA AA AA AA AA AA AA AA ICP ICP VOL ES AA A A AA A A A A AA VOL AA AA

GRA GRA GRA VOL VOL VOL VOL VOL VOL VOL VOL OTA GRA OTH

.4.

14 31 19 14 14 14 24 19 24 24 26 19 28 4 4 1

19 19 1 1 7 7

33 33 33 24 29 31 31 28 1 1

12 26 26 1

28 28 12 26 1

20 20 12 12 19 7

20 30 10 10 30 30 30 30 17 17 4

31 20 20 30 20 20 20 4

19 29

29 29 29 24 24 14 14 24 14 14 24 24 26 24

28

... l...

IGS 431s ... . .. . .. .. 1.... ... .

737 733 737 3020 2314 2314 733 2319 727 3020 1025 475 724 727 1332 1500 1507 3023 2445 724 1337 947 2443 2445 2443 1337 1190 1025 1199 2443 1500 941 941 1141 1144 1332 1190 2445 1507 1144 1141 941 3023 947 947 625 629 479 1199 2077 2319 2075 2077 1023 2075 625 629 1144 151 774 779 779 151 774 1141 903 1023 903 1181 906 906 1188

31.60000 31.68000 31.69000 31.73000 31.74000 31.84000 31.85000 31 .a5000 31.92000 31 -95000 32 . O O O O O 32 . O O O O O 32.02000 32.06000 32.07000 32.09000 32.09000 32.09000 32.10000 32.10000 32.10000 32.11000 32.11000 32.11000 32.12000 32.12000 32.13000 32.14000 32.15000 32.16000 32.17000 32.18000 32.19000 32.19000 32.19000 32.19000 32.19000 32.20000 32 .20000 32.21000 32,22000 32.25000 32.25000 32.26000 32.30000 32.30000 32.30000 32.30000 32.31000 32.39000 32.40000 32.42000 32.44000 32.46000 32.50000 32 .50000 32.60000 32.61000 32.66000 32.68000 32.68000 32.70000 32.76000 32.80000 32.80000 32.80000 32.86000 3 3 . O O O O O 33.10000 33.10000 33.30000 33.50000

IGS 43/Ag@pm)

629 625 1337 2654 2654 2443 2443 3061 1332

9 .ooooo 13 . O O O O O 15.00000 15.00000 16.00000 19 .ooooo 19.00000 20.00000 20.00000

..3..

GRA GRb GRA GRA OTA OTH CRA OTH GILA G M GRA OTH GPA GRA GRA GRA CPA GRA GRA GRA GRA GRA GRA G RA GRA GRA GRA GRA GRA GRA GRA GRA GRA GRA GRA GRA GRA GRA GRA GRA GRA GRA GRA GRA GRA VOL VOL OTR CRA GRA GRA GRA GRA GRA GRA VOL VOL GRA C RA GRA GRA GRA GRA GRA GRA GRA CBA GRA VOL GRA CRA VOL

FA PA AA AA AA AA AA AA AA

.4.

6 6 6 4

28 28 6

28 12 4

14 30 12 12 33 2 2 4

20 12 33 3

20 20 20 33 34 14 34 20 2 3 3 7 7

33 34 20 2 7 7 3 4 3 3

19 19 30 34 1

28 1 1

14 1

19 19 7

31 5 5 5

31 5 7

23 14 23 10 23 23 10

19 19 33 29 29 20 20 19 33

... l... ...... ..2 ........

IGS 43IAg ... 1181 3020 3020 3023 2445 2445 3023 479 812 1025 1025 1500 812 479 475 816 816 1141 1141 1141 1141

2445 1500 1507 479 1144 1141 1144 1144 1144 1023

2443 2445 1507 2077 1190 475 475 1023 2075 2075 2077 94 1 737 2443 724 724 727 3064 1332 1337 941 94 7 733 2445 727 3061 3061 3064 3064 1190 1199 1199 151 151 737 733 151 94 7 947 2445 1188 202 202 202 202

1144

9 4.1.

20.00000 20.30000 20.40000 20.80000 21 .ooooo 21.00000 21.00000 21 .ooooo 21.60000 21.60000 21.70000 22.00000 22 .ooooo 22.00000 22 .ooooo 22.20000 22.20000 22.40000 22.70000 22.70000 22.80000 22.90000 23.00000 23 .OOOOO 23 .OOOOO 23.00000 23.10000 23.30000 23.40000 23.60000 23.90000 23.90000 24.00000 24.00000 24.00000 24.00000 24 .OOOOO 24.00000 24 .OOOOO 24 .OOOOO 24.10000 24.30000 24.30000 24.60000 25.00000 25.00000 25.00000 25.00000 25 .OOOOO 25 . O O O O O 25.00000 25.00000 25.00000 26.00000 26.00000 26 . O O O O O 26.00000 26.00000 26.00000 26.00000 26 .OOOOO 26.00000 26.00000 26.00000 26.00000 26.00000 26.00000 26.20000 26.50000 27 .OOOOO 28.00000 30.00000 30.00000 31.00000 42 .OOOOO 42.00000 43 . O O O O O 45.00000

IGS m e ( % )

2314 9.83900 2319 9.88600 2314 9.94300

..3..

AA AA AA AA AA AA AA AA AA A A AA AA A A AA AA AA AA AA A A AA AA AA AA AA AA A A AA A A AA AA AA AA A A AA AA AA AA A A AA AA AA AA AA AA A A AA AA AA AA AA AA A A AA AA A A AA AA AA AA AA A A AA AA AA A A ES sns AA A A AA AA AA A A AA P A P A PA F A

LCP ICP ICP

.a

10 & 4 4

20 20 4 30 26 14 14 2

26 30 30 26 26 7 7 7 7 7

20 2 2 30 7 7 7 7 7

14 3

20 20 2 1

34 30 30 10 1 1 1 3 6

20 12 12 12 19 33 33 3 3 6

20 12 19 19 19 19 34 34 34 31 31 6 6

31 3 3

20 10 5 5 5 5

28 28 28

.- l... ........ 2 ........

IGS 43/Fe ... 2319 3020 1023 1025 1023 1025 3023 2654 774 774 719 947 941 779 941 151 246s- 3020 2445 3061 207 5 151 1500 3064 625 629 1190 94 1 947 1500 1507 625 625 941 3056 1507 2075 2077 2077 1141 1141 1141 1144 1144 1144 3052 3052 1181 151 151 737 629 3056 629 3064 629 724 1199 721 3061 724 727 1644 2443 1141 1144 1144 903 903 906 625 1190 1199 733 2443 1644 1646 1646 1141 1188 906 3023 737 7 33 2654

10.39000 10.70000 10.73000 10.76000 10.84000 10.87000 10.95000 10.95000 11.05000 11.060oO 11.06000 11.07000 11.07000 11.07000 11.08000 11.08000 11.10000 11.11000 11.14000 11 * 14000 11.15000 11.15000 11.16000 11.16000 11.16000 11.16000 11.16000 11.17000 11.17000 11.17000 11.17000 11.17000 11.18000 11.19000 11.19000 11 * 20000 11.20000 11.20000 11.20000 11.20000 11.20000 11.20000 11.20000 11.20000 11.20000 11.20000 11.20000 11.20000 11.21000 11.21000 11.23000 11.22000 11.22000 11.23000 11.24000 11.24000 11.25000 11 -25000 11.26000 11.26000 11.27000 11.29000 11.30OOO 11.30000 11.30000 11.30000 11.30000 11.30000 11.30000 11.30000 11.31000 11.31000 11.33000 11.35000 11 -35000 11.40000 11.40000 11.40000 11.40000 11.40000 11.40000 11 -43000 11.47000 11.56000 11.59000

..3..

ICP VOL A A AA A A AA VOL CRA VOL V O L V O L VOL VOL VOL VOL AA VUL VOL VOL XP v 0 1 AA VOL X P A A AA A A VOL VOL VOL v OL AA AA VOL A A VOL V O L VOL VOL AA Ah AA AA AA AA AA AA AA VOL V O L VOL AA AA AA XP AA V O L AA V O L X P VOL VOL E S VOL AA AA AA ICP ICP ICP AA AA AA V O L VOL ES ES ES AA AA ICP VOL VOL V O L GRA

.4.

28 4 14 14 14 14 4

29 5 5 5 3 3 5 3

31 20 4

20 19 1 31 2

19 19 19 34 3 3 2 2

19 19 3

24 2 1 1 1 7 7 7 7 7

24 24 10 31 31 6

19 24 19 19 19 12 34 12 19 12

1

12 17 20 7 7 7

23 23 23 19 34 34 6

20 17 17 17 7

10 23 4 6 6

29

29

IGS 43/Fe ... 475 479 2314 475 2319 479 2314 2319

IGS 43/Mn(%)

11.80000 11.84000 11.92000 11.99000 12.07000 12.07000 12.60000 12.75000

151 151 1337 1332 1332 1337 1181 1188 1144 1144 1144 1141 1141 1144 1144 733 737 737 2319 2443 2443 2445 1141 1141 1141 2314 2314 2443 2445 1507 779 779 733 2445 774 2443 2445 1500 774 1507 3061 2319 1500 3064 3064 3023 3020 3020 3023 1190 1199 80 724 724 727 3061 1190 80 727 1199 2445 80 3064 2445 3061 1646 2443 2443 3061 1644 1644 1646 3064

1.03000 1.03000 1.13000 1.14000 1.16000 1.18000 1.29000 1.30000 1.33000 1.33000 1.33000 1.34000 1.34000 1.34000 1.34000 1.35000 1.35000 1.35000 1.35800 1.36000 1.36000 1.36000 1.36000 1.36000 1.36000 1.36300 1.36300 1.37000 1.37000 1.37000 1.37000 1.37000 1,38000 1.38000 1.38000 1.39000 1.39000 1.39000 1.39000 1.40000 1.40000 1.40100 1.41000 1.41000 1.41000 1.42000 1.43000 1.43000 1.43000 1.43000 1.43000 1.44000 1.44000 1.44000 1.44000 1.44000 1.44000 1.45000 1.45000 1.45000 1.46000 1.47000 1.47000 1.48000 1.48000 1.49000 1.49000 1.49000 1.49000 1.50000 1.50000 1.50000 1.51000

..3..

AA AA ICP AA ICP AA ICP ICP

AA AA AA AA A A A A AA AA AA AA AA AA AA AA AA AA A h AA ICP AA AA AA A A AA AA ICP ICP AA AA AA A A Ah AA AA AA A A AA AA A A AA AA ICP A A AA AA AA AA A A A A AA AA AA AA AA AA AA AA AA AA AA A A A A AA AA AA AA AA AA AA AA AA AA A A

.4.

30 30 28 30 28 30 28 28

31 31 33 33 33 33 10 10 7 7 7 7 7 7 7 6 6 6

28 20 20 20 7 7 7

28 28 20 20 2 5 5 6

20 5

20 20 2 5 2

19 28 2

19 19 4 4 4 4

34 34 3

12 12 12 19 34 3

12 34 20 3

19 20 19 17 20 20 19 17 17 17 19

... l... ........ 2 ........ ..3..

IGS Q/Mn...

3056 2314 2319 3052 2314 3052 2319 3056

1.54000 1.54100 1.57600 1.58000 1.60600 1.61000 1.61500 1.65000

IGS 43/Si& (5%) 1644 1644 1646 1646 625 3061 625 1500 1507 3061 625 629 1500 3056 1507 3056 629 3052 2443 629 3052 2446 727 724 724 941 2446 727 2443 1181 2443 2319 947 2446 1188 2314 2319 947 151 947 2314 3064 3064 3064 3064 151 941 941 3061 3061

0.75000 0.75000 0.7 5000 0.75000 0.99000 1.01000 1.01000 1.03000 1.03000 1.03000 1.03000 1.03000 1.04000 1.04000 1.05000 1.05000 1.06000 1.06000 1.07000 1.07000 1.08000 1.10000 1.12000 1.13000 1.13000 1.14000 1.14000 1.14000 1.15000 1.16000 1.17000 1.18200 1.19000 1.19000 1.19000 1.19000 1.20400 1.21000 1.23000 1.24000 1.24400 1.25000 1.27000 1.30000 1.30000 1.30000 1.35000 1.38000

1.56000 i.44000

IGS 43/As@pm) 733 0.02000 733 0.02000 737 0.02000 737 0.02000 1181 0.03600 3064 0.03700 1188 0.03700 3061 0.03900 941 0.04000 941 0.04000 941 0.04000 3064 0.04300 3061 0.04500 3064 0.04500 947 0.05000 947 0.05000 947 0.05000 1500 0.05000 1500 0.05000 1507 0.05000

AA ICP ICP AA ICP AA ICP AA

ICP I CP ICP ICP COL COL COL CIA CRA COL COL COL CRA CRA GRA GRA COL CRA CRA COL CRA CRA CRA CRA CRA CRA CRA CRA CRA AA CRA ICP CRA GRA AA ICP ICP CRA CRA GRA ICP CRA C R A COL COL GRA CRA G R A c RA GRA

VOL VOL VOL VOL ICP VOL ICP VOL AA AA AA VOL VOL VOL A A AA A A VOL VOL VOL

.4.

24 28 28 24 28 24 28 24

17 17 17 17 19 19 19 2 2

19 19 19 2

24 2

24 19 24 20 .9 24 20 12 12 12 3

20 12 20 10 20 28 3

20 10 28 28 3

31 3

28 19 19 19 19 31 3 3

19 19

6 6 6 6

10 19 10 19 3 3 3

19 19 19 3 3 3. 2 2 2

... l... ........ 2 ........

IGS 4 3 I h ... 1507 3061 3064 479 2654 475 47 5 479 151 151 151

0.05000 0.05000 0.05000 0.06400 0.07000 0.07 100 0.07500 0.07600 0.09200 0.09300 0.09400 _. -

151 0.09500 2654 0.15000

IGS Q/Cd (%)

1332 1337 1332 1337 1023 1025 1025 1023 3052 3056 3056 3052 3023 1190 1190 1199 1199 941 941 941 947 947 947 1500 3020 3020 3023 2443 1141 2443 1141 1141 1141 1144 2443 1141 1144 1144 2443 1144 1144 2445 77 4 779 3061 2314 2445 727 779 3061 3064 3064 1181 1188 733 733 737 737 1500 1507 1507 724 727 2077 3064 151 151 724

0.10000 0.11000 0.12000 0.12000 0.13580 0.13760 0.13760 0.14100 0.15300 0.15300 0.15400 0.15500 0.16000 0.16600 0.16700 0.16700 0.16800 0.17000 0.17000 0.17000 0.17000 0.17000 0.17000 0.17000 0.17000 0.17000 0.17000 0.17200 0.17300 0.17400 0.17400 0.17400 0.17400 0.17400 0.17500 0.17500 0.17500 0.17500 0.17600 0.17600 0.17600 0.17700 0.17800 0.17800 0.17800 0.17870 0.17900 0.17900 0.17900 0.17900 0.17900 0.17900 0.17900 0.17900 0.18000 0.18000 0.18000 0.18000 0.18000 0.18000 0.18000 0.18000 0.18000 0.18000 0.18000 0.18000 0.18000 0.18100

..3..

VOL VOL VOL AA

AA AA AA COL COL COL COL ICP

rc P

AA AA A A A A A A AA AA AA AA AA A A AA A A A A A A AA AA AA AA AA AA AA AA AA AA A A A A AA AA AA A A AA AA AA AA AA A A AA AA AA A A AA AA AA AA ICP AA AA AA AA AA AA AA AA AA AA AA A A A A A A A A AA AA AA AA AA A A A h

.4.

2 19 19 30 29 30 30 30 31 31 31 31 29

33 33 33 33 14 14 14 14 24 24 24 24 4

34 34 34 34

3 3 3 3 3 3 2 4 4 4

20 7

20 7 7 7 7

20 7 7 7

20 7 7

20 5 5

19 28 20 12 5

19 19 19 10 10 6 6 6 6 2 2 2

12 12 1

19 31 31 12

30

... l . . . . . . . , . .2. .. . . . . .

ICS 431Cd ... 774 2075 2075 2077 3064 3061 3061 475 2319 479 2314 2319 2445 47 5 479 479 41 5 2445 1622 1622

0.18100 0.18200 0.18200 0.18200 0.18300 0.18400 0.18400 0.18400 0.18410 0.18500 0.18510 0.18680 0.18700 0.18700 0.18700 0.18700 0.18800

0.32000 0.32000

0 . igzoo

94 1 1507 941 947 941 1500 1500 1507 724 941 947 3064 724 727 727 3061 3061 3064 1181 1188 733 733 137 737 151 151

18 .ooooo 18 .OOOOO 19.00000 19 .ooooo 19 .ooooo 19 .ooooo 19 .ooooo 19 .ooooo 19.20000 20 .ooooo 20 .ooooo 20.00000 20.10000 20.40000 20.60000 21.00000 21 .ooooo 21.00000 2 1.00000 22.20000 37.50000 37.60000 37.90000 38.50000 54 .OOOOO 60.00000

IGS a/co@pm) I 2654 125.00000 2319 128 .ooooo 2314 129 . O O O O O 2314 130 .OOOOO 2319 135 . O O O O O 2654 135.00000 1507 139.00000 1332 140.00000 1500 141 .OOOOO 1507 148.00000 1500 151.00000 1332 155.00000 1337 155.00000 3061 175 .OOOOO 3061 177 .OOOOO 3064 177 . O O O O O 3064 177.00000 3061 180 .ooooo 1337 180 .ooooo 3064 182 .ooooo 3064 184 .OOOOO 3061 185.00000 1025 186 . O O O O O 2445 188 .OOOOO 2443 190 .ooooo 2443 190 .ooooo 2445 190.00000 1023 194.00000 1025 199 .ooooo 941 200 .ooooo 941 200 .ooooo 941 200 .ooooo

..3..

AA AA AA A h AA AA AA AA ICP AA ICP ICP A A A A A A AA AA A A XP XF

AA AA AA AA A h AA AA A h AA AA AA A A AA AA AA AA AA AA AA AA ICP 1C-P ICP ICP AA AA

AA ICP I CP ICP ICP AA A A A A AA AA A A A A AA AA AA AA A A A A AA AA A h AA AA AA AA AA A A AA AA AA A A AA

.4.

5 1 1 1

19 19 19 30 28 30 28 28 20 30 30 30 30 20 25 25

3 2 3 3 3 2 2 2

12 3 3

19 12 12 12 19 19 19 10 10 6 6 6 6

31 31

29 28 28 28 28 29 2

33 2 2 2

33 33 19 19 19 19 19 33 19 19 19 14 20 20 20 20 14 14 3 3 3

... l... ........ 2 ........

ICS 43lCo ... 947 947 947 1190 1023 151 151 724 1199 1190 1199 724 816 3052 3052 3056 816 812 812 2443 2443 2445 727 727 3056 2445 1181 1188

200 .a0000 200 .ooooo 200 .ooooo 200 .oaooo 200.00000 200 .ooooo 200 .ooooo 201 .ooooo 202 .ooooo 204 .OOOOO 204 .ooooo 205 .OOOOO 205 .OOOOO 205 . O O O O O 205 .OOOOO 206 .OOOOO 207 .OOOOO 208 .ooooo 208.00000 210.00000 210.00000 210.00000 210.00000 211 .ooooo 211 .ooooo 215.00000 220.00000 220 .ooooo

ICS 4yNi(ppm)

475 151 151 2443 2445 724 727 2443 724 727 2445 3061 3064 3061 3064 1332 1332 1337 1337 2445 3061 3061 3064 3064 1507 479 1507 1500 1500 3052 3052 2314 2319 2314 2319 3056 3056 1181 1188 2654 2654

10 .ooooo 10.00000 10.00000 12.00000 12.00000 12.00000 12.00000 13.00000 13.00000 13.00000 14 .OOOOO 14.00000 14.00000 15.00000 15 .OOOOO 15 .OOOOO 15 .OOOOO 15 .OOOOO 15 .OOOOO 16.00000 11 .ooooo 17 .OOOOO 17 .OOOOO 18.00000 20.00000 20.00000 23 .OOOOO 26.00000 28 .ooooo 28 .ooooo 28.00000 37.50000 39.40000 39.60000 40.30000 41 .OOOOO 41 . O O O O O 49 .ooooo 50 .ooaoo

2CO . O O O O O 200.00000

IGS 44/H20- (9%)

735 0.06000 2310 0.10000 2319 0.10000 563 0.11000 563 0.12000 2442 0.14000 819 0.15300 1888 0.16000

..3..

AA AA AA AA AA ES ES AA Ah AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA

AA ES B8 AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA A A AA AA ICP ICP ICP ICP AA AA AA AA ICP ICP

1-100 1-110 1-110 0-0 0-0 N-110 2-105 1-105

.4. ... l... ........ 2 ........

3 2445 0.16000 3 816 0.16700 3 I 137 0.17000

34 14 31 31 12 34 34 34 12 26 24 24 24 26 26 26 20 20 20 12 19. 24 20 10 10

30 31 31 20 20 12 12 20 12 ' 12 20 19 19 19 19 33 33 33 33 20 19 19 19 19 2

30 2 2 2

24 24 28 28 28 28 24 24 10 10 29 29

17 30 30 14 14 28 7

24

1881 1888 728 568 724 1024 1028 1881 568 2874 1028 2878 142 364 1024 3061 3066 3066 2654 2654 368 3061 1101 1104 1381 1381 1330 1388 1388 1192 1333 3092 1335 3097 778 772 1551 1551 1559 1559

IGS 44A

568 1024 1024 568 568 563 735 737 1192 3066 563 1028 737 1196 1028 3066 735 2445 3061 568 2878 563 2878 1625 1629 1625

1625 1629 1335 1625 2874 1625 1333 1629 1335 368 368

3061

0.17000 0.17000 0.18000 0.18000 0.19000 0.19000 0.19000 0.19000 0.19000 0.19000 0.20000 0.20000 0.21000 0.21500 0.22000 0.22000 0.22000 0.22000 0,23000 0.23000 0.24000 0.24000 0.25000 0.25000 0 -26200 0.26300 0.27000 0.28200 0.28300 0.29000 0.34000 0.35000 0.36000 0.38000 0.45000 0.46000 0.54000 0.54000 0.58000 0.60000

38.73000 38.81000 38.88000 38.98000 39.02000 39.04000 39 .20000 39.20000 39.30000 39.35000 39.46000 39.55000 39.60000 39.60000 39.62000 39.67000 39.70000 39.73000 39.78000 39.79000 39.81000 39.83000 39.83000 39 .a5000 39.86000 39.90000 39.92000 39.93000 39.94000 39 -94000 39.96000 39.98000 39.99000 39.99000 40.01000 40.01000 40.04000 40.04000

..3..

N-110 2-105 1-100 1-105 1-105 0-0 0-0 0-0 2-105 2-105 1-105 0-0 2-110 2-105 2-110 0 - 0 0-0 2-105 1-100 1-100 1-100 1-100 1-100 0-0 1-100 1-100 1-100 1-100 1-100 0 - 0 1-100 1-100 1-105 0-0 2-100 0-0 2-100 0-0 0-0 1-100 1-100 1-100 1-100

AA VOL VOL AA ELE AA Ice ELE A h ~

VOL AA VOL ICP AA VOL VOL ICP ICP VOL ELE VOL ELE VOL XP XP VOL VOL XF XF v OL VOL VOL VOL VOL VOL v 0L VOL VOL

.4.

28 7

17 24 24 20 14 20 4 4

24 14 23 4

23 31 9 4

33 33 33 2 2 9

33 37 37 12 12 29 12 12 10 15 8 15 8

26 26 34 34 34 34

14 4 4 14 14 14 17 17 10 33 14 4 17 10 4

33 17 28 33 14 23 14 23 19 19 19 33 19 19 15 19 23 19 15 19 15 9 9

31

... I... . .. ..... 2 ........

IGSWCu ... 2874 1388 364 364 1551 1335 816 1388 1559 3097 3097 1629 3097 1333 1551 3092 1333 816 816 816 816 2310 819 778 1335 473 476 819 819 819 563 473 778 3092 1381 2654 2656

40.04000 40.05000 40.07000 40.07000 40.08000 40.09000 40.09000 40.10000 40.10000 40.12000 40.13000 40.13000 40.14000 40.14000 40.14000 40.15000 40.15000 40.15000 40.15000 40.15000 40.15000 40.15000 40.16000 40.17000 40.17000 40.17000 40.17000 40.18000 40.18000 40.18000 40.18000 40.19000 40.20000 40.21000 40.21000 40.22000 40.22000

IGS 44Pb (%I 1330 21.93000 1330 21.99000 568 31.70000 563 32 .OOOOO 568 32.20000 563 32.98000 1625 33.90000 1629 33.90000 1333 34.26000 1333 34.32000 1335 34.33000 1333 34.37000 1335 34.40000 1335 34.47000 1028 34.49000 1333 34.54000 3137 34.59000 735 34.60000 735 34.60000 737 34.60000 1028 34.61000 1335 34.62000 1104 34.64000 1388 34.64000 1101 34.65000 1104 34.65000 1612 34.68000 1101 34.68000 3137 34.69000 3092 34.69000 1381 34.69000 1616 34.70000 724 34.70000 2656 34.70000 3131 34.70000 3131 34.70000 1381 34.7 1000 3092 34.72000 1629 34.72000 2654 34.7 3000 1625 34.73000 1612 34.74000 3092 34.74000 1388 34.75000

..3..

VOL VOL VOL VOL AA VOL VOL VOL AA ELE ELE VOL ELE VOL AA ELE VOL

VOL VOL VOL AA VOL VOL VOL AA AA VOL VOL VOL ELE AA VOL ELE VOL VOL VOL

yoL

AA AA AA AA AA AA XF XF VOL VOL VOL VOL VOL VOL VOL VOL VOL ICP ICP ICP VOL VOL GRA GRA GRA GRA VOL GRA VOL ELE GRA VOL VOL VOL VOL VOL GRA ELE VOL VOL VOL VOL ELE GRA

.4.

23 12 9 9

34 15 7 12 34 8 8 19 8 15 3;.

15 7 7 7 7

30 7

26 15 27 27 7 7 7

14 27 26 8 12 2 2

29 29 14 14 14 14 19 19 15 15 15 15 15 15 4 15 5

17 17 17 4

15 37 12 37 37 6

37 5 8

12 6

20 2 5 5

12 8

19 2 19 6 8

12

... I...

IGS44/Pb ...

... ..... 2 ...,....

1616 364 2654 2656 1629 364 2583 368 142 142 364 368 2586 3097 3061 2878 1625 1192 2586 816 2586 2874 2583 2874 3066 368 2583 819 142 2878 3097 819 3097 819 819 1196 819 816 816 728 816 728 728 816 142 724 737 724 3061 563 728 724 3066 1559 1559 1551 563 1629 1551 1625 1024 1888 568 568 1881 1024 1881 2310 1888 2319 2319 2310 2319 2310

IGS 441Zn (%)

2442 2442 2445 142 2445 142

34.76000 34.77000 34.78000 34.79000 34.81000 34.82000 34.85000 34.85000 34.86000 34.87000 34.88000 34.88000 34.89000 34.89000 34 .a9000 34.89000 34.90000 34.90000 34.91000 34.91000 34.92000 34.92000 34.93000 34.93000 34.94000 34.95000 34.96000 34.97000 34.97000 34.97000 34.99000 34.99000 35 .OOOOO 35.00000 35 .OOOOO 35 .OOOOO 35.01000 35.02000 35.03000 35.04000 35.04000 35.05000 35.05000 35.05000 35.05000 35.07000 35.10000 35.11000 35.14000 35.16000 35.18000 35.22000 35.22000 35.39000 35.47000 35.49000 35.49000 35.50000 35.54000 35.80000 35.81000 35.98000 36.09000 36.14000 36.19000 36 .20000 36.32000 36.43000 36.55000 36.77000 36.82000 36.95000 37.09000 37.13000

..3..

VOL GRA VOL VOL VOL GRA VOL GRA VOL VOL GRA GRA VOL ELE VOL GRA VOL AA VOL VOL VOL GRA VOL GRA VOL GRA VOL VOL VOL GRA ELE VOL ELE VOL VOL AA VOL VOL VOL POL VOL VOL VOL VOL VOL VOL ICP VOL VOL GRA VOL VOL VOL VOL VOL VOL GRA XF VOL XF VOL GRA GRA GRA GRA VOL GRA AA GRA AA AA AA AA AA

1.18600 ICP 1.19600 ICP 1.19600 ICP 1.20000 AA 1.20900 ICP 1.30000 AA

.4.

6 9 2 2

19 9 3 9

31 31 9 9 3 8

33 23 19 10 3 7 3

23 3

23 33 9 3 7

31 23 8 7 8 7 7

10 7 7 7 20 7

20 20 7

31 20 17 20 33 14 20 20 33 34 34 34 14 19 34 19 4

24 14 14 24 4

24 30 24 30 30 30 30 30

28 28 28 31 28 31

... I... ........ 2 ........

IGS WZn ... 563 563 568 568 1551 1559 368 1551 1559 364 364 368 364 1908 54 1 541 368 541 541 541 541 1192 1196 1028 1908 728 2656 1625 735 737 724 728 2656 629 1902 3061 735 724 724 2654 1024 1028 1625 3066 2310 724 728 728 2654 1629 3061 2310 1024 1902 1881 2319 3066 1888 1888 2310 737 1881 1330 1629 2319 1625 2445 2445 2319 2442 2442 1381 1381 1388 1388 1330 1330

1.34000 1.35000 1.35000 1.36000 1.39000 1.41000 1.42000 1.42000 1.42000 1.43000 1.43000 1.43000 1.44000 1.44000 1.45000 1.45000 1.45000 1.46000 1.46000 1.48000 1.48000 1.48000 1 .'48000 1.49000 1.49000 1.50000 1.50000 1.50000 1.51000 1.51000 1.51000 1.51000 1.51000 1.51000 1.51000 1.51000 1.52000 1.52000 1.52000 1.52000 1.52000 1.52000 1.52000 1.52000 1.52900 1.53000 1.53000 1.53000 1.53000 1.53000 1.53000 1.53100 1.54000 1.54000 1.54000 1.54500 1.55000 1.56000 1.56000 1.57500 1.59000 1.60000 1.62000 1.64000 1.66700 1.67000 1.75600 1.77600 1.78000 1.78400 1.80000 1.87000 1.91000 1.91000 1.96000 2.08000 2.25000

IGS 441s (%)

1888 9.99000 1881 10.00000 1881 10.17000 1888 10.28000

..3..

AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA V O L AA AA AA XF ICP ICP AA AA AA XF AA AA ICP AA AA AA VOL VOL XF AA AA A A AA AA A A XF AA AA VOL AA AA AA A A AA AA AA ICP A A VOL XF AA XF ICP ICP A h ICP ICP AA AA AA AA V O L VOL

V O L V O L VOL VOL

.4.

14 14 14 14 34 34 9

34 34 9 9 9 9

19 3 3 9 3 3 3 3 10 10 4 19 20 2

19 17 17 20 20 2 19 19 33 17 20 20 2 4 4 19 33 30 20 20 20 2 19 33 30 4

19 24 30 33 24 24 30 17 24 29 19 30 19 28 28 30 28 28 12 12 12 12 29 29

24 24 24 24

32

... l... ........ 2 ........

IGS 441s ... 1330 1330 1330 1881 1028 1028 1024 2442 1888 2445 1024 1381 816 2310 1388 1381 1388 3092 819 2445 2319 2878 2878 3092 3097 724 3097 728 728 724 724 728 2656 3066 1908 1908 2874 2874 2654 2586 2586 3061 816 3131 3066 2586 816 1902 1902 2583 2654 819 1559 3137 3131 819 2656 1551 1881 2583 1 5 5 1 1559 2583 568 3137 3061 1616 142 563 1612 1192 142 563 1196 568

13.23000 13.24000 13.40000 13..70000 13.82000 13.89000 13.95000 13.96000 13.96000 13.99000 14.02000 14.05000 14.05000 14.10000 14.12000 14.13000 14.14000 14.15000 14.15000 14.20000 14.20000 14.20000 14.20000 14.21000 14.23000 14.27000 14.27000 14.28000 14.28000 14.29000 14.29000 14.29000 14.30000 14.30000 14.30000 14.30000 14.30000 14.30000 14.31000 14.34000 14.34000 14.36000 14.37000 14.38000 14.38000 14.39000 14.40000 14.40000 14.40000 14.41000 14.41000 14.42000 14.43000 14.44000 14.46000 14.46000 14.47000 14.48000 14.48000 14.51000 14.51000 14.51000 14.55000 14.56000 14.58000 14.62000 14.63000 14.63000 14.67000 14.69000 14.70000 14.75000 14.80000 14.80000 14.90000

IGS 44/Ag@pm)

646 550.00000 2319 560 . O O O O O 1192 570.00000 1196 580 . O O O O O 2319 590 .OOOOO

..3..

GRA GRA GRA OTR GRA GRA GRA OTH OTH OTR GRA GRA GRA OTH GRA GRA GRA GRA GRA OTR OTH GRA GRA GRA GRA GRA GRA GRA GRA GRA GRA GRA GRA GRA VOL VOL GRA GRA GRA GRA GRA GRA GRA GRA GRA GRA GRA VOL VOL GRA GRA GRA GRA GRA GRA GRA GRA GRA GRA GRA GRA GRA GRA VOL GRA GRA GRA GRA VOL GRA VOL GRA VOL VOL VOL

X F AA AA AA AA

.4.

29 29 29 24 4 4 4

28 24 28 4

12 7

30 12 12 12 8 7

28 30 23 23 8 8

20 8

20 20 20 20 20 2

33 19 19 23 23 2 3 3

33 7 5

33 3 7

19 19 3 2 7

34 5 5 7 2

34 24 3

34 34 3

14 5

33 6

31 14 6 10 31 14 10 14

25 30 10 10 30

... l... ........ 2 ........

IGS U A g ... 642 642 646 1551 1559 1559 2310 1551 568 568 563 563 1330 1330 2310 2319 2310 3066 1024 1028 3066 1028 1024 724 724 728 728 200 200 2583 2586 200 1902 1335 2586 200 1908 2583 1612 200 200 1333 1333 1333 200 2583 1625 1625 2586 1616 1625 1616 1335 1612 142 3097 724 200 3061 816 142 1381 1335 816 1629 1381 816 819 142 142 724 728 728 364 364 364 368 368 368 816 1335 3097 1333 816 819

600 .OOOOO 600 .OOOOO 600 . O O O O O 610.00000 610.00000 610.00000 610.00000 61 5 . O O O O O 620 .OOOOO 622.00000 623.00000 624 .OOOOO 627 .OOOOO 630 . O O O O O 630.00000 630.00000 630.00000 632 .OOOOO 648.10000 654 . O O O O O 655 . O O O O O 659 .20000 665.30000 670.00000 670.00000 670.00000 670.00000 670.00000 671.00000 672.00000 674.00000 674.00000 674 . O O O O O 675.00000 676.00000 677.00000 677 . O O O O O 678.00000 679.00000 679.00000 679 . O O O O O 679 . O O O O O 679.00000 680 .OOOOO 681.00000 682 . O O O O O 683.00000 683.00000 684 .OOOOO 685.00000 685 . O O O O O 687 . O O O O O 687 .OOOOO 688.00000 688 . O O O O O 689 . O O O O O 690 .OOOOO 690.00000 690 .OOOOO

694 . O O O O O 69 5 .OOOOO 695.00000 695.00000 697.00000 698.00000 698 . O O O O O 698 . O O O O O 698.00000 698 . O O O O O 700 . O O O O O 700 . O O O O O 700.00000 700.00000 700.00000 700 . O O O O O 700.00000 700.00000 700 . O O O O O 700 .OOOOO 701.00000 702 . O O O O O 703.00000 703 .OOOOO 703 . O O O O O

692.0nooo

..3..

X F X P X F AA AA AA AA AA AA A h AA AA AA AA AA AA AA A h AA AA AA AA AA AA AA AA AA AA F A F A F A F A F A F A FA AA F A F A FA AA F A F A F A F A AA F A AA AA F A F A AA F A F A F A F A F A AA PA AA AA AA A h F A AA AA AA AA AA AA F A AA AA AA AA AA AA AA AA AA AA F A F A F A AA A h

.4.

25 25 25 34 34 34 30 34 14 14 14 14 29 29 30 30 30 33 4 4

33 4 4

20 20 20 20 5 5 3 3 5

19 15 3 5

19 3 6 5 5

15 15 15 5 3 19 19 3 6

19 6

15 6

31 8

20 5

33 7

31 12 15 7 19 12 7 7

31 31 20 20 20 9 9 9 9 9 9 7

15 8 15 7 7

... l... . .. . ... .2 ...... . .

IGS 44lAg ... 1388 3061 819 819 2654 1388 819 2656 2654 2656 1629 1629 772 3092 778 3092

704 . O O O O O 705 . O O O O O 706 . O O O O O 706 . O O O O O 707 . O O O O O 707.00000 709 . O O O O O 710 . O O O O O 711.00000 712.00000 715.00000 715 .OOOOO 720.00000 726.00000 740.00000 745.00000

IGS M e ( % )

568 568 563 563 2442 1625 1629 1625 2445 2442 291 291 1629 2445 2310 2310 142 2445 291 2319 2319 724 724 728 728 1330 1330 2319 2319 2442 2310 2310 142 735 2878 2445 737 2319 2878

2442 735 737 2654 1028 1881 2310 1888 2874 2654 2656 2656 1028 1888 2874 714 1024 728 724 364 364 368 1881 1192 1196

0.80000 0.80000 0.81000 0.81000 0.90740 0.91000 0.92000 0.93000 0.93180 0.93300 0.94000 0.94000 0.94000 0.94500 0.95000 0.95000 0.95000 0.95200 0.96000 0.96000 0.96000 0.97000 0.97000 0.97000 0.97000 0.97000 0.97000 0.97000 0.97000 0.97530 0.98000 0.98000 0.98000 0.99000 0.99000 0.99210 1.00000 1 .ooooo 1.00000

1.00900 1.01000 1.01000 1.01000 1.01000 1.01000 1.01000 1.02000 1.02000 1.03000 1.03000 1.03000 1.03000 1.03000 1.03000 1.04000 1.04000 1.05000 1.06000 1.06000 1.06000 1.06000 1.06000 1.06000 1.06000

..3..

AA AA AA AA F A AA AA F A F A P A AA AA F A F A F A P A

AA AA AA AA I C P X P X F XP I C P I C F AA AA X F I C P AA AA AA I C P AA AA AA AA AA AA AA A h . AA AA AA ICP AA AA AA I C P I C P I C P I C P AA I C P

I C P I C P I C P AA VOL AA AA AA I C P AA AA AA VOL AA I C P VOL V O L AA VOL V O L VOL V O L AA AA AA

.4.

12 33 7 7 2

12 7 2 2 2

19 19 26 8

26 8

14 14 14 14 28 19 19 19 28 28 3 3 19 28 30 30 31 28 3

30 30 20 20 20 20 29 29 30 30 28 30 30 31 17 23 28 17 30 23

28 17 17 2 4

24 30 14 23 2 2 2 4

24 23 20

4 20 20 9 9 9

24 10 10

33

... l... ........ 2 ........ ..3.. .4. ... l... . .. ... . .2 .... .. . . ..3.. .4. ... I... ........ 2 ........ ..3.. .4.

IGS 441

1333 1333 816 816 816 819 819 1881 142 142 2654 2656 364 1333 1381 368 368 1335 2656 1388 1388 1330 3097 1381 2310 3097 3092 3092 1330 2319 2310 2319 1388 1625 1629 476 1381 1388 3137 473 473 3137 1881 476 3131 1888 1881 476 476 1616 1612 1616 1612 2319 2442 2310 2310 2445 2319 1330 2319 1330 2442 772 1381 819 724 1101 1104 1104 3092 1629 1101 473 724 2654 476 476 142 473

IGS 44Ih ... IGS 44/Fe ... As ... 34 34 34 20 9

34 29 19 4 9 9

19 19 19 19 19

1.14000 1.14000 1.14000 1.14000 1.14000 1.14000 1.14000 1.14000 1.14000 1.14000 1.15000 1.15000 1.15000 1.15000 1.16000 1.16000 1.16000 1.16000 1.17000 1.17000 1.17000 1.17000 1.17400 1.18000 1.18000 1 .la400 1.20000 1.20000 1.25000 1.26000 1.33000 1.35000

40.40000 40.40000 40.40000 40.40000 40.41000 40.41000 40.42000 40.42000 40.42000 40.43000 40.44000 40.44000 40.45000 40.45000 40.51000 40.51000 40.56000 40.60000 40.62000 40.69000 40.70000 40.83000 41.04000 41.11000 41.41000 41.45000 41.48000 41.50000 41.57b00 41.61000 41.75000 40.22000 40.24000 40.24000 40.25000 40.25000 40.25000 40.26000 40.26000 40.26000 40.27000 40.27000 40.28000 40.28000 40.28000 40.28000 40.30000 40.30000 40.31000 40.31000 40.31000 40.31000 40.31000

VOL VOL AA AA AA AA A A COL VOL VOL VOL VOL VOL VOL VOL VOL VOL VOL VOL VOL VOL I C P AA VOL A A A A AA AA I C P A A AA AA E L E XP XP AA E L E E L E E L E AA AA E L E E L E AA E L E E L E E L E AA AA VOL VOL VOL VOL A A I C P AA &A I C P A A ELE AA E L E I C P VOL VOL VOL VOL E L E E L E E L E

-BLR VOL E L E AA VOL VOL AA A A E L E A A VOL VOL E L E E L E AA

19 19 7 7 7 7 7

24 31 31 2 2 9

19 12 9 9

19 2

12 12 29 8

1333 2586 2656 1559 476 476 2586 142 2583 728 2586 1888 2583 2583 724 728 1381

40.32000 40.33000 40.33000 40.33000 40.33000 40.33000 40.34000 40.34000 40.35000 40.35000 40.36000 40.36000 40.37000 40.37000 40.37000 40.37000 40.37000

15 3 2 34 21 27 3

31 3

20 3

24 3 3

20 20 12

1551 1551 1559 728 368 1559 1330 1629 1024 364 368 1625 1902 1908 1908 1902

IGS

3061 3061 3066 3066 728 724 724 728 2442 2442 724 2445 724 2445 728 728 2445 1551 1551 1559 1559 2442 2442 2445

1.07000 1.07000 1.07000 1.08000 1.08000 1.08000 1.08000 1.10000 1.12000 1.12000 1.12000 1.16000 1.59000 1.63000 1.65000 1.76000

Ah AA AA AA VOL AA AA XP VOL VOL VOL XP AA AA A A AA

VOL E L E VOL A A A A AA E L E E L E E L E VOL E L E E L E ELE E L E VOL VOL E L E

IGS 44Cd(%) 33 33 33 33 20 20 20 20 28 28 20 28 20 28 20 20 28 34 34 34 34 28 28 28

0.09000 0.11000 0.11000 0.11000 0.11600 0.11700 0.11800 0.11800 0.11860 0.11960 0.12000 0.12090 0.12100 0.12120 0.12200 0.12200 0.12590 0.13000 0.13000 0.13000 0.13000 0.13120 0.13450 0.13670

AA AA A A AA AA AA AA A A I C P I C P AA I C P A A I C P Ah AA ICP AA AA AA AA I C P

3066 3061 3061 3066 563 568 563 568 1888 1888 1881 1559 1551 1559 1551 2319 1024 1024 1028 364 364 364 368 368 368 142

0.06600 0.07000 0.07 100 0.07 100 0.07850 0.07850 0.07870 0.01880 0.09200 0.09200 0.09500 0.09680 0.09700 0.09700 0.09720 0.09900 0.10000 0.10000 0.10000 0.10000 0.10000 0.10000 0.10000 0.10000 0.10000 0.10000 0.10000 0.10100 0.10100 0.10200 0.10200 0.10200 0.10200 0.10300 0.10300 0.10300 0.10300 0.10300 0.10300 0.10300 0.10300 0.10300 0.10400 0.10500 0.10500 0.10500 0.10500 0.10500 0.10500 0.10700 0.10700 0.10800 0.10800 0.10800 0.10830 0.10900 0.10900 0.10970 0.10990 0.11000 0.11000 0.11000 0.11000 0.11000

AA AA AA AA AA AA A A AA AA AA AA AA AA A A A A Art AA A A AA AA AA AA AA AA AA AA AA A A AA AA A A AA AA AA AA AA AA AA A A A A AA A A AA AA AA AA AA AA AA AA AA A A AA A A I C P AA A A I C P I C P AA AA AA AA AA

33 33 33 12

30 8

33 14 14 14 14 24 24 24 34 34 34 34 30 4 4 4 9 9 9 9 9 9

31 31 20 10 20 19 19 10 20 20 20 20 20 20 3 3 3 3 3 3

19 19 19 24 19 30 19 19 30 28 30 30 28 28 2 2 2 2 4

8 8

29 30 30 30 12 19 19 27 12 12 5

27 27 5

24 27 5

24

I C P I C P

IGS WAS(%) 24 27 21

142 728 1192

3 3 3

10 10 24 19 6

19 24 6

24 19 5

291 291 291 1192 1196 1881 1335 1612 1335 1888 1616 1888 1335 3131 3131 3137 3137 1333 1625 1629 819 1629 816 816 819 819 2654 364 364 366 1625 473 476 473 473 724 728 3131

0.95000 0.96000 0.97000 0.99100 1 .ooooo 1.01000 1.02000 1.03000 1.03000 1.06000 1.08000 1.08000 1.09000 1.10000 1.10000 1.10000 1.11000 1.11000 1.12000 1.12000 1.12000 1.13000 1.13000 1.13000 1.13000 1.13000 1.14000 1.14000 1.14000 1.14000 1.14000

40.37000 40.37000 40.38000 40.38000 40.39000 40.39000 40.39000

AA AA AA I C P Ice COL VOL VOL VOL COL VOL COL v OL VOL VOL VOL VOL VOL VOL VOL AA VOL AA AA AA AA VOL VOL VOL VOL VOL AA AA A A A A VOL VOL E L E

6 6 6 6

30 28 30 30 28 30 29 30 29 28 26 12 7

20 37

724 1625 1629 1196 724 724 724 728 728 728 541 541 54 1 541 541 541 1625 1629 1629 1881 1625 2310 1625 1629 2319 2445 2310 2310 2445 2442 2654 2654 2656 2656 1028

5 5 5

19 9 9 7 9 7 7 7 7 2 9 9 9 9

27 27 27 27 20 20 5

37 37

8 19 37 27 20 2

21 21 31 27 20 26 31

728 772 142 142 473

31 27

34

... l... ........ 2 ........ ..3.. .4. ........ 2 ........ ..3.. .4. ... I... ........ 2 ........ ..3.. ... l . . .

IGS 44/Co ... IGS 44Ni ... .4.

IGS U/Cd ... 942 0.11000 XF 946 0.11000 XF 2442 0.11080 I C P 2319 0.11300 AA 94 2 0.12000 XF 946 0.12000 XF

25 25 28 30 25 25

3061 3061 1625 1629 1629 1625 724 1888 1888 563 563 568 568 728 724

180.00000 180.00000 185.00000 188 .ooooo 188 .ooooo 189 .ooooo 190.00000 190.00000 190.00000 191.00000 191.00000 193 . O O O O O 194 . O O O O O 197 . O O O O O 199 .ooooo 199 .ooooo 100 .ooooo 100 .ooooo 120 .ooooo 121.00000 200.00000 200.00000 200 .ooooo 200.00000 200 .ooooo 200 .ooooo 200 .ooooo 200 .ooooo 201.00000 203 .OOOOO 204 . O O O O O 204 . O O O O O 204 . O O O O O 204 . O O O O O 204.00000 204 . O O O O O 206 . O O O O O 210 .ooooo 210 .ooooo 210.00000 215 . O O O O O 220.00000 230.00000

(pprn)

AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA

33 33 19 19 19 19 20 24 24 14 14 14 14 20 20 12 29 29 2 2

2654 2656 1330 2310 2310 1388 724 728 2319 1381 724 2445 1381 1388 1629 2445 728 728 2442 724 728 2442 2319 724 1559 1192 1196 2310 1551 1551 1559 1888 1881 1881 1888 2656

600 . O O O O O 600 . O O O O O 600 . O O O O O 600 . O O O O O 600 . O O O O O 609 . O O O O O 610 . O O O O O 610 . O O O O O 610 . O O O O O 612.00000 615.00000 617.00000 618 . O O O O O 620.00000 620.00000 624 . O O O O O 625.00000 625 . O O O O O 629 . O O O O O 630.00000 630.00000 630 . O O O O O 630.00000 640.00000 640.00000 640.00000 640 . O O O O O 640.00000 642.00000 645.00000 648.00000 650 . O O O O O 670.00000 670.00000 670.00000 700 . O O O O O

AA AA I C P AA AA AA AA AA AA AA AA I C P AA

2 2

29 30 30 12 20 20 30 12 20 28 12 12 19 28 20

1192 0.22200 1196 0.23000 291 0.32000 291 0.32000 291 0.32000 724 0.32000 2654 0.32000 142 0.32000 2310 0.32100 724 0.33000 142 0.33000 2319 0.33100 2319 0.33400 2310 0.33800 728 0.34000 728 0.34000 2654 0.34000 2656 0.34000 2656 0.34000 1024 0.34000 2319 0.34000 2310 0.34200 1024 0.35000 1028 0.35000 1028 0.35000 2442 0.35080 2445 0.35200 2442 0.35570 1625 0.35600 2445 0.35740 1625 0.36100 1629 0.36200 1629 0.36300 1625 0.37400 1629 0.37700 1625 0.37800 1629 0.38000 942 0.38000 942 0.38000 946 0.38000 946 0.38000 1330 0.41000 1330 0.41000

IGS U/Co (pprn) 2656 124 . O O O O O 2654 129 . O O O O O 3066 140 . O O O O O 3066 160.00000 2445 175 . O O O O O 2442 176 . O O O O O 2445 178.00000 2442 179 . O O O O O

AA AA AA AA

10 10 3 3

AA ES

3 20

AA XP I C P 1381

1330 1330

AA AA AA ES AA AA AA AA ES ES AA AA AA AA AA AA AA AA AA I C P I C P I C P AA I C P AA AA AA AA AA AA AA XF XF XF XP I C P I C P

2 31 30

AA AA I C P AA AA I C P AA AA AA AA AA AA AA AA AA AA AA AA AA AA

20 28 20

2656 2654 291 291 29 1 728 728 1388 1551 1559 1388 724 1381 1625 1625 1629 1629 1559 1551 724 1881 1192 728 1196 1881

IGS 441Ni

20 31 30 3

3 20 28 30 20 34 10 10 30 34 34 34 24 24 24 24 2

30 30 20 20 2 2 2 4

30 30 4 4 4

28 28 28 19 28 19 19 19 19 19 19 19 25 25 25 25 29 29

3 20 20 12 34 34 12 20 12 19 19 19 19 34 34 20 24 10 20 10 24

IGS 4th

1192 1196 2445 2445 2442 2442 1625 1629 142 142 291 291 29 1 942 946 946 942 728 724 720 724

0.12900 0.13200 0.19520 0.19690 0.19750 0.20000 0.24000 0.25000 0.29000 0.29000 0.36000 0.36000 0.37000 0.37000 0.37000 0.37000 0.38000 0.43000 0.46000 0.46000 0.47000

10 10 28 28 28 28 19 19 31 31

3 3 3

25 25 25 25 20 20 20 20

AA AA ICF I C P I C P I C P ES ES AA AA AA AA AA XF XF XF XF ES ES ES ES

- 1625 1330 1625 1902 1902 1908 1908 3066 3061 3066 1629 3061 2319 291 291 291 2654

480.00000 500 . O O O O O 520.00000 550.00000 560.00000 570.00000 570.00000 570.00000 575.00000 575 . O O O O O 580 . O O O O O 590.00000 590.00000 600.00000 600 . O O O O O 600 . O O O O O 600 . O O O O O

XF I C P XF AA AA AA AA AA AA AA XF AA AA AA AA AA AA

19 29 19 19 19 19 19 33 33 33 19 33 30 3 3 3 2

AA &A AA AA ICP I C P I C P I C P

2 2

33 33 28 28 28 28