L.S. Beck - Microsoft€¦ · Gold grains recovered from heavy mineral concentrate, sample DP7-95 (photomicrograph by B. Gartner, Saskatchewan Research Council). This report is available

Open File Report 2004-1

Alluvial Gold in the Upper Miocene to Eocene Cypress Hills Formation of Southwest Saskatchewan

L.S. Beck 2004

Saskatchewan Industry and Resources Saskatchewan Geological Survey

Open File Report 2004-1

Alluvial Gold in the Upper Miocene to Eocene Cypress Hills Formation of Southwest Saskatchewan

L.S. Beck 2004

Printed under the authority of the Minister of Industry and Resources

19 48

Saskatchewan Industry and Resources Saskatchewan Geological Survey

Saskatchewan Geological Survey ii Open File Report 2004-1

Although the Department of Industry and Resources has exercised all reasonable care in the compilation, interpretation, and production of this report, it is not possible to ensure total accuracy, and all persons who rely on the information contained herein do so at their own risk. The Department of Industry and Resources and the Government of Saskatchewan do not accept liability for any errors, omissions or inaccuracies that may be included in, or derived from, this report.

Cover: Gold grains recovered from heavy mineral concentrate, sample DP7-95 (photomicrograph by B. Gartner, Saskatchewan Research Council).

This report is available for viewing and additional copies are available for purchase at:

Publications Office Saskatchewan Industry and Resources 2101 Scarth Street, 3rd floor Regina, SK SA4P 3V7 (306) 787-2528 or FAX (306) 787-2488 E-mail: [email protected] and the Resident Geologists’ offices in La Ronge and Creighton

Parts of this publication may be quoted if credit is given. It is recommended that reference to this report be made as follows:

Beck. L.S. (2004): Alluvial gold in the Upper Miocene to Eocene Cypress Hills Formation of southwest Saskatchewan; Sask. Industry Resources, Open File Rep. 2004-1, CD-ROM, 15p.

Reviewed and edited by: L. Kelley G.D. Delaney

Prepared for publication by: C.L. Brown

Manuscript received July 2003 Final revised manuscript received July 2004 Released September 2004 Saskatchewan Geological Survey

Saskatchewan Geological Survey iii Open File Report 2004-1

Contents

page

Introduction ...................................................................................................................... 1

Background and Previous Work ....................................................................................... 2

Sample Collection ............................................................................................................. 3

Sample Processing ............................................................................................................ 4

Results .............................................................................................................................. 5

Gold Content and Distribution .................................................................................. 5

Gold Grain Documentation ....................................................................................... 5

Economic Potential - Discussion ...................................................................................... 8

Depositional Environment ......................................................................................... 8

Source of Alluvial Gold ............................................................................................. 9

Grade/Tonnage Considerations ................................................................................. 9

Summary and Conclusions ............................................................................................... 10

Selected Bibliography ....................................................................................................... 11

Appendix 1 - Sample Locations, Weights, and Gold Content........................................... 12

Figures

1. Project location map .................................................................................................. 1

2. Discovery quarry, Simmie showing .......................................................................... 2

3. Poorly consolidated lower conglomerate, middle cross-bedded sandstone and upper conglomerate; Cypress Hills Formation in the Simmie showing discovery quarry ........................................................................................................................ 2

4. Channel sample at location MM7-25 ........................................................................ 3

5. Sample from shallow road cut, location MM7-42 ..................................................... 3

6. Sample locations and gold concentrations by fire assay ............................................6

7. Gold grains recovered from heavy mineral concentrate, sample DP7-95 ................. 7

8. Paleogeography of the Cypress Hills Formation ....................................................... 8

9. Cypress Hills Formation, rare consolidated conglomerate, location MM7-59 .......... 9

Appendix

1. Sample Locations, Weights, and Gold Content.......................................................... 12

Saskatchewan Geological Survey 1 Open File Report 2004-1

Introduction

A regional sampling program for alluvial gold in the Cypress Hills Formation was carried out in southwest Saskatchewan in 1997. This report presents the results of that program and outlines the economic potential of the region for gold paleoplacer deposits.

The project area covers parts of NTS map sheets 72F, 72G, 72J, and 72K and encompasses the main outcrop areas of the Cypress Hills Formation in southwest Saskatchewan. The region covers about 12 000 km2 (Figure 1).

The Cypress Hills Formation is an Upper Miocene to Eocene fluviatile sequence of poorly consolidated conglomerates, gravels, and sands that form two main plateau-like outcrop areas in southwest Saskatchewan: an easterly block that lies south and west of Swift Current; and a dissected western block that extends into southeast Alberta. The formation has a maximum thickness of about 80 m and averages 38 m. Regionally, the base of the formation lies on an erosion surface that dips east at 3.8 m per kilometre (Vonhof, 1969).

Figure 1 - Project location map. The outcrop belt of the Cypress Hills Formation is modified from Slimmon (2003).

LLOYDMINSTER PRINCE ALBERT

MELFORTNORTH BATTLEFORD

SASKATOON

YORKTON

MELVILLE

REGINAMOOSE JAWSWIFT CURRENT

WEYBURN

ESTEVAN

53

52

51

50

49

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49110 109 106 104 102108 107 105 103

N

100 0 100 Kilometres


Background and Previous Work

In 1990, a regional geochemical survey was carried out by the Saskatchewan Research Council (SRC) and Cameco Corporation over an area of approximately 64 000 km2 in southwest Saskatchewan (Simpson, 1991). The main objective was to map kimberlite indicator minerals in the surficial deposits, but gold grains were also recovered from the heavy mineral concentrates. Approximately one sample per 300 km2 was collected, primarily from glacial and fluvioglacial sands and gravels in road cuts and gravel pits. In addition, a few samples of bedrock were collected. About 25 kg of <5 mm material was collected at each site. Heavy mineral concentrates were obtained using screens, shaker tables, and magnetic separation. Gold grains were panned from the concentrates and were counted, described, and weighed.

A number of anomalous (greater than the background concentration of 5 to 10 ppb) gold values were found in glacial deposits of the region, but by far the largest anomaly was obtained from a bedrock sample of the Cypress Hills Formation taken from a small quarry about 4 km west of the hamlet of Simmie (Figures 2 and 3) in the west half of Section 32, Township 11, Range 16W3. This sample produced 468 grains of gold estimated to weigh 3744 µg. Although several sample sites with diamond indicator minerals were re-sampled, the gold anomaly was not investigated further by SRC or Cameco.

In March 1994, a mineral disposition consisting of two half sections (east half of Section 32 and west half of Section 33) was recorded just east of the geochemical anomaly, but was allowed to lapse and no assessment work was submitted. In May 1996, the geochemical anomaly (named “the Simmie showing”) was staked by Lemar Resources. In June 1997, they optioned the property to Consolidated Pine Channel Gold Corporation who undertook bulk sampling of the discovery quarry. Four 22 kg channel samples were taken from the face of the quarry and processed at the Saskatchewan Research Council’s Geochemical Laboratory. Gold content of these samples ranged from 686 to 1554 grains of gold, and calculated grades ranged from 132 to 258 ppb (SIR Assessment File 72F16-NE-0001).

In the summer of 1997, a regional sampling program of the Cypress Hills Formation was carried out by Consolidated Pine Channel under the direction of the author, acting as consultant to the company. When results of the survey were obtained, a number of claims were staked to cover the main anomalies, but the claims were allowed to lapse in 1999 and no further work was done. At the same time, Consolidated Pine Channel dropped their option on the Simmie claim. As of March 2003, the Simmie showing was covered by a small claim of 32 ha held by Lemar Resources. Consolidated Pine Channel has graciously permitted the writer to include the results of the 1997 regional sampling program in this report.

Figure 2 - Discovery quarry, Simmie showing. Figure 3 - Poorly consolidated lower conglomerate, middle cross-bedded sandstone, and upper conglomerate; Cypress Hills Formation in the Simmie showing discovery quarry.


Sample Collection

Sampling took place in three stages between May and October 1997. Ninety-two samples (DP7-01 to DP7-92) were collected from the eastern part of the region (map sheets 72J-3, -4, and -5; 72G-13; 72F-16; and 72K-1). In addition, 48 samples were collected from the western part of the region (MM7-07 to MM7-17, MM7-20 to MM7-49, and MM7-57 to MM7-63) from NTS areas 72F-10, -11, -12, -14, and -15.

After results of the initial sampling were obtained, several sites, where anomalous values were obtained were re-sampled (DP7-93 to DP7-108).

Samples were collected from road cuts, quarries and outcrops. Sample spacing was uneven, particularly in the eastern part of the region, due to the erratic distribution of outcrops and exposures. Where possible, the largest and thickest sections of the Cypress Hills Formation were sampled.

About 7 kg of screened (<4 mm) sandy matrix of the conglomerate was collected at each locality. In thick sections, samples were obtained by channeling the matrix from top to bottom (Figure 4). Samples taken from shallow road cuts and small outcrops were essentially grab samples (Figure 5). In a few cases, samples were taken from shallow, hand-dug pits where bedrock was covered by thin drift and soil.

Sampling details are listed in Appendix 1. Geographic locations (Section, Township, and Range) and elevations were determined from field maps and field notes of the field parties. Latitude and longitude were estimated by digitizing from the paper field maps.

Figure 4 - Channel sample at location MM7-25. Figure 5 - Sample from shallow road cut, location MM7-42.


Sample Processing

All samples collected in the field were processed at Saskatchewan Research Council’s Geochemical Laboratory. Samples were weighed and screened to <1.7 mm. The coarse material was rejected. The weight of the <1.7 mm material was recorded and the sample was passed over a shaker table to separate the light and heavy particles. Samples with anomalous quantities of gold were subjected to several runs.

The heavy mineral concentrate from the shaker table was weighed then wet sieved to <1.0 mm and magnetic particles were removed from the <1.0 mm fraction with a hand magnet. The non-magnetic material was then passed through a “Magstream Separator” and the >3.9 g/cm3 specific gravity material was isolated.

Gold grains were removed from the heavy fraction with a “Mosley Superpanner” and grains were documented and counted. Gold concentration was then determined by fire assay. Gold grain counts were not carried out for the samples bearing the prefix “MM” (Appendix 1).


Results

Gold Content and Distribution Analytical results are summarized in Appendix 1. Gold grain counts range from 0 to 2770 and gold concentrations by fire assay range from 0.1 ppb to 274.5 ppb. Statistical treatment of the analytical data was not carried out due to the small sample population, but anomalous values are readily apparent from visual inspection of the data.

Most of the samples (78%) contained less than 10 ppb Au, a value that is taken to represent the regional background. Concentrations of 10 ppb and greater are considered to be anomalous and are arbitrarily divided into weak (10 to 20 ppb), moderate (21 to 50 ppb), strong (51 to 100 ppb), and very strong (>100 ppb) anomalies. There are 33 anomalous samples in total.

The regional distribution of gold values is shown in Figure 6. There are 28 anomalies, including the strongest in NTS map sheet 72F-16. Several of these samples were in and near the Simmie showing discovery quarry. Sample DP7-01 is from the lower conglomerate in the quarry and returned 163 grains of gold assaying 179.3 ppb. This is compatible with the grades in channel-samples in the showing (SIR Assessment File 72F16-NE-0001).

The other anomalous samples in 72F-16 form an east-trending rectangular zone approximately 10 km by 5 km, roughly coincident with the current drainage basin of Swift Current Creek, which is inferred to be coincident with an ancestral river system active since the beginning of the Tertiary.

Of the anomalous samples in the “DP” group, all but five are from the rectangular zone described above. The five anomalies outside of the rectangle are only moderate in amplitude with gold grain counts ranging from 20 to 45 and assays ranging from 13.0 to 30.5 ppb. Samples DP7-65 and -79 (20.0 and 30.5 ppb respectively) occur in NTS map sheet 72J-4 on the north flank of the Swift Current block of the Cypress Hills Formation. Both samples are from within a few kilometres of the Swift Current Creek drainage basin. Samples DP7-71 and -72 (30.1 and 13.0 ppb respectively) in NTS 72K-1 also lie on the north flank of the Swift Current block and are close to Swift Current Creek.

Sample DP7-83 (20.5 ppb) is a single anomaly in NTS 72G-13 near the south edge of the Swift Current block. Two check samples (DP7-107 and -108) taken from this locality were not anomalous (1.1 and 3.6 ppb).

The only anomalous samples (MM7-16 and -26) discovered during the sampling of the western part of the region “MM” group of samples) are in NTS map sheet 72F-15. Sample MM7-16 contains only 21.1 ppb Au but MM7-26 assayed at 93.5 ppb Au and is considered significant.

Gold Grain Documentation Gold grain documentation consists of measuring the length and width of each grain in microns and describing the shape as “I” - irregular, “A” - abraded, or “A/I” - transitional between the two. Irregular grains are pitted, have several protrusions, and may be curled. Abraded grains are more leaf shaped and rounded and lack pitted surfaces. Irregular grains are interpreted as having been transported for a short distance, whereas rounded grains imply a more distant source. In richer samples, only 50 grains are examined and the total number is estimated. Complete gold grain data are contained in the SRC assay reports which are archived and available for review at Saskatchewan Industry and Resources in Regina.

Most of the gold grains are rectangular with dimensions ranging from 20 to 580 microns, although the majority of the grains fall within the 100 to 200 micron range. Paradoxically, the largest grains are from only moderately anomalous samples. Sample DP7-40 contains 44 grains (13.8 ppb) and includes one grain measuring 260 microns by 500 microns. The largest grain discovered (200 microns by 580 microns) occurs in sample DP7-71 which only contains a total of 31 grains (30.1 ppb).

CraneLake

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21

Text

1

13

13

43

343

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1

Simmie

Blumenhof

Neville

McMahon

Rhineland

DP7-104

DP7-79DP7-78

DP7-27DP7-26DP7-25

MM7-07

DP7-56

DP7-57

DP7-55

DP7-74DP7-73DP7-72

DP7-64

DP7-63DP7-62

DP7-71

DP7-60

DP7-61

DP7-70

DP7-69

DP7-80 DP7-83DP7-81

DP7-82

DP7-84

DP7-85

DP7-87DP7-86 DP7-88

DP7-90

DP7-89

DP7-92

DP7-91

DP7-21DP7-22

DP7-23

DP7-24

DP7-28

DP7-29

DP7-75

DP7-76

DP7-77

DP7-68DP7-67

DP7-66

DP7-65

DP7-14DP7-13DP7-15DP7-16DP7-08DP7-07

DP7-18

DP7-19

DP7-17

DP7-09 DP7-12DP7-11

MM7-13 MM7-12

MM7-11

MM7-20

MM7-21

MM7-08

MM7-09

MM7-31

MM7-23MM7-24

MM7-22

MM7-32

MM7-29

MM7-30

MM7-25

MM7-46

MM7-62

MM7-41

MM7-39

MM7-44

MM7-42

MM7-43

MM7-45

MM7-35

MM7-34

MM7-33

Cypress HillsPark

MM7-60

MM7-47 MM7-40MM7-38

MM7-36

MM7-37

MM7-28

MM7-27

MM7-26

MM7-10

MM7-63

MM7-15

MM7-14

MM7-17MM7-16

DP7-106

DP7-107DP7-108

DP7-105

MM7-61

72J-04

72F-11

72F-10

72F-09

72F-14

72F-15

72F-16

72K-01

72K-02

72G-13

72G-12

72K-0372K-04

72F-13

72F-12

72F-06

72J-05

72G-11

72F-07

72G-14

72K-08

72J-03

72F-05

72F-08

72K-07

72J-06

Ponteix

Eastend

Gull Lake

Shaunavon

Maple Creek

109°30'0"W

109°30'0"W

109°0'0"W

109°0'0"W

108°30'0"W

108°30'0"W

108°0'0"W

108°0'0"W

107°30'0"W

107°30'0"W

49°30'0"N

50° 0' 0"N

5 0° 0' 0"N

SimmieDP7-59

DP7-58

DP7-37

DP7-98DP7-53

DP7-36DP7-35

DP7-54

DP7-52

DP7-51

DP7-50

DP7-45

DP7-30DP7-31DP7-32

DP7-95DP7-33

DP7-34

DP7-96DP7-44DP7-43

DP7-41

DP7-40

DP7-42DP7-03 DP7-99

DP7-02DP7-01

DP7-39DP7-38

DP7-94DP7-93

DP7-04

DP7-48DP7-47DP7-46

DP7-05

DP7-06

DP7-102

DP7-101

DP7-103

DP7-100

DP7-49

DP7-97

Figure 6 - Sample Locations and Gold Concentrations by Fire Assay

REGINA

SASKATOON

110°W

110°W

108°W

108°W

106°W

106°W 104°W

104°W

102°W

102°W

49°N 49°N

50°N50°N

51°N51°N

52°N52°N

53°N53°N

54°N54°N

Location Map

LEGEND

Gold, ppb

Township Grid

Highways

Railways

Rivers

Cypress Hills Formation

> 100

> 50 - 100

> 20 - 50

> 10 - 20

< 10

NTS Grid

geology from Slimmon (2003)

0 2.5 5 7.5 10Kilometres

-

Note: Where legend symbolsoverlap due to geographicproximity of sample locationsonly the highest value recordedis presented on the map



Most samples contain a mixture of all three morphologies, although a few samples have predominately rounded grains and a few contain mainly irregular grains (Figure 7).

Figure 7 - Gold grains recovered from heavy mineral concentrate, sample DP7-95 (photomicrograph by B. Gartner, Saskatchewan Research Council).


Economic Potential - Discussion

The three main parameters that should be addressed in any discussion of the economic potential of a region for paleoplacer deposits of gold are: 1) depositional environment, 2) source and origin of the alluvial gold, and 3) grade/tonnage possibilities.

Depositional Environment Detailed studies of the Cypress Hills Formation by Leckie and Cheel (1989) indicate that the Tertiary gravels of southwest Saskatchewan were deposited from a north-to northeast-flowing, braided river system that originated in the Sweetgrass Hills, Bearpaw Mountains, and Little Rocky Mountains of north-central Montana (Figure 8).

Figure 8 - Paleogeography of the Cypress Hills Formation.


The Cypress Hills Formation in the western part of the region is coarse grained and lacks finer sediments (Figure 9). In contrast, outcrops in the east and northeast (Swift Current block) represent deposits of small channels and interchannel areas that contained intermittent lakes and mudflats.

The contrasting depositional environments may explain the regional distribution of alluvial gold. The relative paucity of gold in the western part of the region is probably due to the higher energy level of the rivers such that gold was held in suspension and not deposited. The lower energy environment of the drainage system in the east permitted the gold grains to fall out of suspension to form a placer deposits.

Source of Alluvial Gold The relatively large grain size and the abundance of irregularly shaped grains suggest a local gold source. There are, however, no known gold-bearing source rocks in the vicinity. A paleogeographic reconstruction of the region in Tertiary times by Kjarsgaard (1995), suggested that the Tertiary gravels forming the eastern part of the region, in particular the Swift Current block, were largely derived from the Bearpaw Mountains and Little Rocky Mountains (Figure 8). As the latter area is rich in vein gold deposits, it seems likely that the alluvial gold in the Cypress Hills

Formation was derived from that area of north-central Montana.

Grade/Tonnage Considerations To date, Phanerozoic paleoplacer deposits of gold in rocks have not been considered a high priority exploration target because of the notion that they are too small or of insufficient grade for full-scale commercial production. Deposits in the Cypress Hills Formation could prove an exception because gold is widely distributed, particularly in the Swift Current block, with numerous highly anomalous concentrations locally. At the Simmie showing, gold is widely and evenly disseminated with grades ranging from 132 to 258 ppb (SIR Assessment File 72F16-NE-0001). This compares favourably with modern day placers with minimum economic grades of 150 to 200 ppb. The quarry face at the Simmie showing exposes a section of mineralized Cypress Hills Formation 8 m thick and 150 m long (Figure 2). Assuming that this represents a cross-section of the ancient drainage system, and that mineralization extends for several kilometres along its length, the deposit could be in the order of several million tonnes.

At the Simmie showing, it is not known whether gold values increase towards the underlying unconformity with the Bearpaw shales. In placer districts, grade generally increases towards the base of the formation and, moreover, rich “paystreaks” of these districts are generally at, or close to, the bedrock surface beneath the detrital sediments.

Production of gold, as a by-product of aggregate quarrying of Tertiary formations in Alberta (including the stratigraphic equivalent of the Cypress Hills Formation) has been described by Edwards et al. (1994). It is reported that the processed sand and gravel contains the equivalent of 50 ounces of gold for every 100 000 tonnes of material.

Figure 9 - Cypress Hills Formation, rare consolidated conglomerate, location MM7-59.


Summary and Conclusions

1) Regional sampling of the Upper Miocene to Eocene Cypress Hills Formation, in southwest Saskatchewan, shows that in the eastern part of the sampled area, particularly in the Swift Current block, the formation contains widespread alluvial gold.

2) The Simmie showing, discovered prior to the regional program, has consistent values ranging from 132 to 258 ppb Au and could be part of a large, low-grade deposit. Further exploration of the deposit could disclose higher grades and “paystreaks” closer to the base of the gravels.

3) Several other anomalies in the Swift Current block should be sampled in detail to determine the lateral extent of the mineralization.

4) In view of the irregular spacing of the samples in the Swift Current block, a program of fill-in reconnaissance sampling might be rewarding. Shallow trenching would be necessary in places to attain complete coverage.

5) Gold grains are relatively coarse and irregular in shape suggesting a local source, but paleogeographic interpretation suggests that the source was the vein gold deposits of the Little Rocky Mountains in north-central Montana.

6) The westerly outcrop areas of the Cypress Hills Formation contain background concentrations of alluvial gold and are not considered to be prospective.


Selected Bibliography

Craw, D. and Leckie, D.A. (1996): Tectonic controls on dispersal of gold into a foreland basin: An example from the Western Canada Foreland Basin; J. Sed. Resear., v66, no3, p559-566.

David, P.P. and Whitaker, S.H. (1973): Geology and Groundwater Resources of the Prelate Area (72K), Saskatchewan; Sask. Resear. Counc., Map No. 16, 1:250 000 scale.

Edwards, D., Scafe, D., Eccles, R., Miller, S., Berezniuk, T., and Boisvert, D. (1994): Mapping and Resource Exploration of the Tertiary and Preglacial Formations of Alberta; Alta. Resear. Counc., Open File Rep. 1994-06.

Kjarsgaard, B.A. (1995): Research on kimberlites and application of diamond exploration techniques in Saskatchewan; Geol., Surv. Can., Open File Rep. 3119, p213-216.

Klassen, R.W. (1991): Surficial Geology and Drift Thickness, Cypress Lake, Saskatchewan; Geol. Surv. Can., Map 1766A, 1:250 000 scale.

Leckie, D.A. and Cheel, R.J. (1989): The Cypress Hills Formation (Upper Eocene to Miocene), a semi-arid braid plain deposit resulting from intrusive uplift; Can. J. Earth Sci., v26, p1918-1931.

Simpson, M.A. (1991): Kimberlite Indicator Minerals in Southwest Saskatchewan; Sask. Resear. Counc., Pub R-1210-8-E-91, 13p and appendices.

Slimmon, W.S. (2003): Geological Atlas of Saskatchewan, version 6, CD-ROM.

Whitaker, S.H. (1967): Geology and Groundwater Resources of the Wood Mountain Area (72G), Saskatchewan; Sask. Resear. Counc., Map No. 5, 1:250 000 scale.

__________ (1970): Geology and Groundwater Resources of the Swift Current Area (72J), Saskatchewan; Sask. Resear. Counc., Map No. 11, 1:250 000 scale.

__________ (1976): Geology and Groundwater Resources of the Cypress Area (72F), Saskatchewan; Sask. Resear. Counc., Map No. 22, 1:250 000 scale.

Vonhof, J.A. (1969): Tertiary gravels and sands in the Canadian Great Plains; unpubl. Ph.D. thesis, Univ. Sask., 170p.

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410

8.54

45W

38

22N

W 1

037

504

7.60

0.55

n.d.

25.0

5n.

d.0.

7no

rth b

acks

lope

MM

7-23

72F-

1049

.383

610

8.55

51W

38

22S

1

636

504

7.50

0.40

n.d.

20.3

0n.

d.0.

2ro

ad c

ut, m

idw

ayM

M7-

2472

F-10

49.3

836

108.

5551

W3

822

S

16

3625

48.

300.

95n.

d.14

.80

n.d.

0.1

road

cut

, bas

eM

M7-

2572

F-10

49.4

341

108.

5138

W3

922

SE

13

3530

48.

651.

60n.

d.22

.19

n.d.

0.1

east

face

, gra

vel p

itM

M7-

2672

F-15

49.4

832

108.

4657

W3

1021

NW

10

3425

47.

750.

40n.

d.18

.59

n.d.

93.5

east

bac

kslo

peM

M7-

2772

F-15

49.5

117

108.

5103

W3

1022

NW

25

3450

47.

950.

45n.

d.18

.86

n.d.

3.8

base

of b

acks

lope

MM

7-28

72F-

1549

.493

710

8.54

22W

310

22N

1

534

604

8.00

0.25

n.d.

21.5

0n.

d.1.

6gr

avel

pit,

wes

t of r

oad

MM

7-29

72F-

1049

.331

110

8.55

19W

37

22S

E 1

635

504

10.2

01.

90n.

d.25

.90

n.d.

3.4

sout

h ba

cksl

ope

MM

7-30

72F-

1049

.353

610

8.56

32W

37

22N

E 2

937

504

10.2

50.

45n.

d.20

.78

n.d.

0.3

grav

el p

it, s

outh

of r

oad

MM

7-31

72F-

1049

.413

410

8.54

48W

38

22N

W 3

435

754

7.05

0.65

n.d.

18.3

9n.

d.0.

2m

idw

ay, e

ast b

acks

lope

MM

7-32

72F-

1049

.300

410

8.57

18W

36

22N

W 3

036

504

9.10

1.10

n.d.

20.4

5n.

d.0.

1at

unc

onfo

rmity

with

Rav

ensc

rag

Fm.

MM

7-33

72F-

1149

.324

710

9.00

53W

37

23N

E 1

137

254

9.15

2.35

n.d.

14.6

8n.

d.0.

1ea

st b

acks

lope

MM

7-34

72F-

1149

.323

910

9.01

04W

37

23S

E 1

136

254

8.20

0.55

n.d.

13.4

6n.

d.0.

2ro

ad c

ut a

t unc

onfo

rmity

MM

7-35

72F-

1149

.324

810

9.05

59W

37

23N

E 0

737

504

9.85

1.65

n.d.

28.8

8n.

d.1.

6gr

avel

pit

wes

t of r

oad

MM

7-36

72F-

1449

.465

010

9.00

07W

39

23N

W 3

636

254

7.60

0.60

n.d.

18.0

2n.

d.0.

9m

idw

ay w

est b

acks

lope

MM

7-37

72F-

1449

.452

110

9.00

30W

39

23N

W 2

436

754

7.75

0.05

n.d.

23.6

5n.

d.0.

1gr

avel

pit,

eas

t of r

oad

MM

7-38

72F-

1449

.453

810

9.05

14W

39

23S

W 2

936

754

7.10

0.55

n.d.

17.0

6n.

d.0.

4bo

rrow

are

a, w

est o

f roa

dM

M7-

3972

F-11

49.4

154

109.

0613

W3

923

SE

06

3775

47.

700.

30n.

d.12

.63

n.d.

0.1

north

bac

kslo

peM

M7-

4072

F-14

49.4

535

109.

1304

W3

924

SE

29

3800

46.

750.

25n.

d.16

.37

n.d.

0.1

wes

t fac

e, g

rave

l pit

MM

7-41

72F-

1149

.440

210

9.19

30W

39

25S

W 1

540

004

6.20

0.05

n.d.

22.7

6n.

d.0.

1ea

st s

ide,

road

cut

MM

7-42

72F-

1149

.381

410

9.11

21W

38

24N

W 1

038

554

6.75

0.20

n.d.

27.7

6n.

d.0.

3ea

st b

acks

lope

MM

7-43

72F-

1149

.353

710

9.11

21W

37

24N

W 2

736

754

8.75

0.60

n.d.

22.0

6n.

d.0.

1ea

st b

acks

lope

MM

7-44

72F-

1149

.375

710

9.05

55W

38

23N

W 0

837

004

8.40

0.10

n.d.

16.9

2n.

d.0.

2ea

st b

acks

lope

MM

7-45

72F-

1149

.330

810

9.08

43W

37

24N

E 1

137

004

8.80

1.55

n.d.

18.9

6n.

d.0.

1so

uth

back

slop

eM

M7-

4672

F-11

49.3

739

109.

2442

W3

826

SW

11

3650

410

.05

2.20

n.d.

19.5

7n.

d.0.

1no

rth fa

ce, g

rave

l pit

MM

7-47

72F-

1449

.452

110

9.20

57W

39

25N

E 2

035

154

8.05

0.75

n.d.

23.2

6n.

d.2.

2ea

st s

ide,

road

cut

MM

7-48

**72

F-12

49.3

615

109.

4814

W3

729

SE

36

4300

47.

500.

30n.

d.25

.75

n.d.

0.4

sout

h si

de, r

oad

cut

MM

7-49

**72

F-12

49.3

144

109.

5156

W3

729

SW

03

3700

49.

301.

85n.

d.13

.65

n.d.

0.4

grav

el p

it, s

outh

of r

oad

MM

7-57

**72

F-12

49.3

619

109.

5851

W3

730

NW

34

4475

49.

050.

20n.

d.13

.81

n.d.

0.1

sout

h si

de, r

oad

cut

MM

7-58

**72

F-12

49.3

952

109.

5731

W3

830

NE

23

4365

47.

400.

10n.

d.12

.36

n.d.

0.2

smal

l roa

d cu

tM

M7-

5972

F-12

49.3

840

109.

5045

W3

829

SE

15

4325

48.

650.

80n.

d.18

.76

n.d.

0.2

base

of c

ongl

omer

ate

cliff

MM

7-60

72F-

1249

.383

810

9.34

16W

38

26S

W 1

441

904

9.35

0.45

n.d.

9.12

n.d.

0.1

north

east

face

, gra

vel p

itM

M7-

6172

F-12

49.3

939

109.

3202

W3

829

SE

24

4165

46.

550.

30n.

d.8.

72n.

d.0.

1re

fuse

pit

MM

7-62

72F-

1249

.393

510

9.29

57W

38

26S

W 2

039

504

8.35

0.25

n.d.

14.6

0n.

d.0.

7cu

t ban

kM

M7-

6372

F-15

49.5

242

108.

4644

W3

1121

SW

02

2275

49.

350.

15n.

d.34

.32

n.d.

0.7

east

bac

kslo

pe

Sam

ple

Mas

s (k

g)M

asse

s of

frac

tions

in g

ram

sG

old

grai

ns,

coun

t

Au,

fire

ass

ay

on -1

.7 m

m

frac

tion

(ppb

)

App

endi

x 1

- Sam

ple

Loc

atio

ns, W

eigh

ts, a

nd G

old

Con

tent


Sam

ple

NTS

N L

atW

Lon

gM

erTw

pR

geSe

ctEl

evat

ion

(ft)

Siev

ed

(mm

)+1

.7 m

mM

agne

tics

Hea

vy M

iner

als

Com

men

ts

Sam

ple

Mas

s (k

g)M

asse

s of

frac

tions

in g

ram

sG

old

grai

ns,

coun

t

Au,

fire

ass

ay

on -1

.7 m

m

frac

tion

(ppb

)

DP

7-01

72F-

1649

.570

410

8.09

34W

311

16S

W 3

228

254

7.15

0.25

31.7

432

.92

163

179.

3lo

wer

con

glom

erat

e, d

isco

very

pit

DP

7-02

72F-

1649

.570

410

8.09

34W

311

16S

W 3

228

354

7.45

0.80

19.9

130

.60

105

76.8

uppe

r con

glom

erat

e, d

isco

very

pit

DP

7-03

72F-

1649

.572

210

8.10

01W

311

16N

E 3

128

254

8.60

2.10

7.95

39.0

15

20.1

side

ban

k of

old

pit

DP

7-04

72F-

1649

.571

510

8.07

46W

311

16N

E 3

328

004

8.25

0.05

6.71

21.6

826

098

.9ro

ad c

ut, w

est s

ide

DP

7-05

72F-

1649

.583

510

8.07

04W

312

16S

W 1

027

254

7.00

0.65

2.49

30.3

915

5si

de b

ank

of o

ld q

uarr

yD

P7-

0672

F-16

49.5

926

108.

0639

W3

1216

SW

15

2775

48.

552.

653.

2927

.98

134.

3si

de b

ank

of a

ctiv

e qu

arry

DP

7-07

72J-

450

.145

210

7.36

40W

315

12N

E 0

825

754

6.25

0.30

0.22

32.2

13

0.3

smal

l out

crop

on

hills

ide

DP

7-08

72J-

450

.145

210

7.36

40W

315

12N

E 0

825

854

6.75

0.15

0.97

18.4

71

0.4

10 ft

abo

ve s

ampl

e D

P7-

07D

P7-

0972

J-5

50.1

516

107.

3634

W3

1512

SE

17

2550

46.

750.

500.

6216

.46

00.

8ro

ad c

utD

P7-

10**

72J-

550

.183

410

7.42

11W

315

13N

E 3

425

004

9.05

1.00

9.92

26.0

30

0.1

outc

rop

on h

illsi

deD

P7-

1172

J-5

50.1

519

107.

3526

W3

1512

SE

16

2600

47.

800.

902.

4027

.45

10.

4no

rth fa

ce o

f act

ive

pit

DP

7-12

72J-

550

.151

910

7.35

26W

315

12S

E 1

626

004

7.05

0.95

2.19

25.0

50

0.1

near

to s

ampl

e D

P7-

11D

P7-

1372

J-4

50.1

419

107.

3642

W3

1512

SE

08

2600

47.

400.

101.

4825

.04

00.

1ou

tcro

p on

sid

e of

cou

lee

DP

7-14

72J-

450

.140

410

7.36

41W

315

12N

E 0

526

204

8.80

0.05

0.21

20.9

80

0.4

600

m s

outh

of s

ampl

e D

P7-

13D

P7-

1572

J-4

50.1

417

107.

3655

W3

1512

SE

08

2625

47.

900.

302.

1514

.34

00.

260

0 m

wes

t of s

ampl

e D

P7-

14D

P7-

1672

J-4

50.1

429

107.

3642

W3

1512

SE

08

2625

46.

450.

352.

6020

.51

00.

1no

rth o

f sam

ple

DP

7-13

DP

7-17

72J-

550

.164

710

7.38

21W

315

12N

E 1

926

254

8.10

0.45

4.01

23.3

62

0.1

side

ban

k of

act

ive

quar

ryD

P7-

1872

J-4

50.1

302

107.

3132

W3

1412

NW

36

2625

48.

450.

051.

2537

.97

00.

1ou

tcro

p on

sid

e of

cou

lee

DP

7-19

72J-

450

.131

110

7.31

48W

314

12N

E 3

626

004

8.05

0.60

2.53

22.3

66

1.6

road

cut

600

m n

orth

of s

ampl

e D

P7-

18D

P7-

2072

J-3

50.1

232

107.

2742

W3

1411

SE

32

2650

49.

053.

203.

7521

.06

20.

7ro

ad c

utD

P7-

2172

J-3

50.1

226

107.

2850

W3

1411

NW

29

2650

48.

054.

602.

8117

.72

21.

2w

est w

all o

f qua

rry

DP

7-22

72J-

350

.121

910

7.28

44W

314

11N

W 2

926

504

7.45

2.85

3.10

24.7

40

0.1

dupl

icat

e of

sam

ple

DP

7-21

DP

7-23

72J-

350

.010

210

7.28

44W

312

11N

W 2

028

004

5.95

0.15

1.06

16.9

81

0.1

smal

l out

crop

on

hills

ide

DP

7-24

72J-

350

.012

710

7.28

44W

312

11S

W 2

927

754

8.90

0.70

6.30

22.3

99

4.6

road

cut

DP

7-25

72J-

450

.003

510

7.30

38W

312

11S

W 1

928

504

8.50

0.10

5.12

22.7

63

0.4

road

cut

DP

7-26

72J-

450

.003

510

7.30

38W

312

11S

W 1

928

504

7.70

0.30

2.96

25.6

02

0.4

bene

ath

sam

ple

DP

7-25

DP

7-27

72J-

450

.003

510

7.30

38W

312

11S

W 1

928

504

9.05

2.70

1.70

16.7

70

4.6

road

cut

DP

7-28

72J-

450

.011

410

7.56

31W

312

15S

E 2

628

704

9.20

0.03

5.73

17.8

60

0.1

road

cut

DP

7-29

72J-

450

.010

710

7.56

35W

312

15S

E 2

628

754

8.80

0.02

6.67

12.1

24

2.1

abov

e sa

mpl

e D

P7-

28D

P7-

3072

F-16

49.5

803

108.

1028

W3

1216

NE

06

2750

48.

700.

409.

5118

.40

1610

.9ou

tcro

p at

sid

e of

rive

rD

P7-

3172

F-16

49.5

805

108.

1023

W3

1216

NE

06

2775

48.

550.

0515

.11

20.5

635

7ou

tcro

p on

hill

side

DP

7-32

72F-

1649

.575

510

8.11

33W

312

17S

E 0

127

504

7.10

0.20

34.3

726

.69

316

142.

8ou

tcro

p, s

ide

of c

reek

DP

7-33

72F-

1649

.572

910

8.11

23W

311

17N

E 3

628

504

5.65

0.10

34.5

122

.74

144

74.9

road

cut

DP

7-34

72F-

1649

.572

910

8.11

29W

311

17N

E 3

628

254

8.15

0.05

8.16

17.9

841

23.9

outc

rop

wes

t of s

ampl

e D

P7-

33D

P7-

3572

F-16

49.5

711

108.

1406

W3

1117

NW

35

2775

46.

400.

256.

6018

.91

188.

1ou

tcro

p on

hill

side

DP

7-36

72F-

1649

.571

110

8.14

06W

311

17N

W 3

527

504

7.20

0.10

5.74

26.1

811

9.5

road

cut

bel

ow s

ampl

e D

P7-

35D

P7-

3772

F-16

49.5

641

108.

1522

W3

1117

NW

27

2830

45.

800.

0529

.71

16.2

216

481

.9ou

tcro

p, s

ide

of c

oule

eD

P7-

3872

F-16

49.5

653

108.

0937

W3

1116

SW

32

2875

47.

102.

257.

9121

.58

1319

.3ou

tcro

p, to

p of

cou

lee

DP

7-39

72F-

1649

.565

810

8.09

38W

311

16S

W 3

228

504

7.75

1.10

10.4

615

.81

8649

.5ou

tcro

p, s

ide

of c

oule

eD

P7-

4072

F-16

49.5

727

108.

1006

W3

1116

NE

31

2825

47.

550.

055.

5726

.98

4413

.8si

de o

f cou

lee

DP

7-41

72F-

1649

.572

710

8.10

17W

311

16N

E 3

128

504

7.55

0.10

9.79

29.6

687

38.3

top

of c

oule

eD

P7-

4272

F-16

49.5

715

108.

1018

W3

1116

NE

31

2875

47.

800.

051.

1719

.53

82.

2ou

tcro

p, h

illsi

deD

P7-

4372

F-16

49.5

714

108.

1117

W3

1116

NW

31

2875

48.

000.

3524

.90

17.6

915

13.1

road

cut

DP

7-44

72F-

1649

.571

410

8.11

17W

311

16N

W 3

128

754

7.85

0.40

23.8

326

.26

88.

8ad

jace

nt to

sam

ple

DP

7-43

DP

7-45

72F-

1649

.573

110

8.12

35W

311

17N

W 3

627

504

7.20

0.50

2.15

17.3

23

2.1

side

of c

oule

eD

P7-

4672

F-16

49.5

819

108.

0701

W3

1216

NW

03

2700

48.

407.

601.

2729

.05

12.

2ol

d qu

arry

DP

7-47

72F-

1649

.581

910

8.07

01W

312

16N

W 0

326

754

7.20

3.05

2.88

25.1

53

4.7

north

face

of o

ld q

uarr

yD

P7-

4872

F-16

49.5

819

108.

0701

W3

1216

NW

03

2675

47.

756.

501.

7631

.12

21.

8ea

st fa

ce o

f old

qua

rry


Sam

ple

NTS

N L

atW

Lon

gM

erTw

pR

geSe

ctEl

evat

ion

(ft)

Siev

ed

(mm

)+1

.7 m

mM

agne

tics

Hea

vy M

iner

als

Com

men

ts

Sam

ple

Mas

s (k

g)M

asse

s of

frac

tions

in g

ram

sG

old

grai

ns,

coun

t

Au,

fire

ass

ay

on -1

.7 m

m

frac

tion

(ppb

)

DP

7-49

72F-

1649

.582

210

8.07

08W

312

16N

W 0

326

804

8.00

2.80

3.24

32.2

52

3.2

75 m

wes

t of s

ampl

e D

P7-

47D

P7-

5072

F-16

49.5

736

108.

1216

W3

1117

NW

36

2725

46.

450.

056.

5415

.97

55.

1si

de o

f cou

lee

DP

7-51

72F-

1649

.573

510

8.12

12W

311

17N

W 3

627

004

7.40

0.10

21.9

345

.76

252

120

50 m

sou

th o

f sam

ple

DP

7-50

DP

7-52

72F-

1649

.573

610

8.12

28W

311

17N

W 3

627

504

6.15

1.80

1.85

24.7

217

11.3

outc

rop

on h

illsi

deD

P7-

5372

F-16

49.5

728

108.

1419

W3

1117

NE

34

2800

48.

100.

0521

.12

39.8

955

21.9

side

of c

oule

eD

P7-

5472

F-16

49.5

726

108.

1359

W3

1117

NW

35

2775

48.

450.

453.

8326

.30

20.

9ro

ad c

ut in

pas

ture

DP

7-55

72K

-150

.024

610

8.13

16W

312

17N

W 3

527

504

8.70

0.25

5.66

40.7

12

0.4

outc

rop

on h

illsi

deD

P7-

5672

K-1

50.0

155

108.

1327

W3

1217

NW

26

2750

47.

153.

201.

0316

.13

10.

2ol

d qu

arry

DP

7-57

72K

-150

.016

010

8.13

28W

312

17S

W 3

527

504

7.25

4.20

0.27

15.5

70

0.1

old

quar

ryD

P7-

5872

F-16

49.5

793

108.

0803

W3

1216

SW

04

2720

47.

050.

602.

1621

.53

53

road

cut

DP

7-59

72F-

1649

.571

010

8.07

96W

311

16S

W 3

328

004

7.50

0.20

5.15

28.9

76

7.9

smal

l pit

DP

7-60

72K

-150

.043

010

8.03

12W

313

16N

E 1

226

204

6.10

1.20

2.40

34.0

81

0.7

road

cut

DP

7-61

72K

-150

.042

710

8.03

08W

313

16N

E 1

226

204

5.75

0.90

1.79

17.9

14

5.4

adja

cent

to s

ampl

e D

P7-

60D

P7-

6272

K-1

50.0

432

108.

0236

W3

1315

NW

07

2700

47.

001.

400.

7115

.73

00.

1ou

tcro

p on

hill

side

DP

7-63

72K

-150

.042

810

8.02

37W

313

15N

W 0

727

004

9.55

0.10

7.98

38.8

01

0.2

bene

ath

sam

ple

DP

7-62

DP

7-64

72K

-150

.042

910

8.02

05W

313

15N

E 0

727

504

7.10

0.30

8.40

25.4

84

2.2

road

cut

DP

7-65

72J-

450

.062

010

7.59

45W

313

15N

W 2

126

754

8.90

0.40

10.4

531

.65

2020

old

quar

ryD

P7-

6672

J-4

50.0

709

107.

5726

W3

1315

NW

26

2600

48.

150.

704.

5242

.91

10.

2ol

d qu

arry

DP

7-67

72J-

450

.065

710

7.57

15W

313

15N

W 2

626

204

7.35

0.35

2.85

35.6

71

0.7

sout

h of

sam

ple

DP

7-66

DP

7-68

72J-

450

.065

910

7.57

09W

313

15N

W 2

626

004

8.20

0.40

3.26

41.0

93

1.3

old

quar

ryD

P7-

6972

K-1

50.0

640

108.

0027

W3

1315

SE

29

2675

48.

200.

6011

.37

47.4

23

2.8

road

cut

DP

7-70

72K

-150

.060

510

8.00

22W

313

15N

W 2

126

504

5.75

0.90

2.60

29.0

63

3.7

old

quar

ryD

P7-

7172

K-1

50.0

427

108.

0230

W3

1315

NW

07

2700

47.

000.

206.

2346

.26

3130

.1sm

all p

it on

hill

side

DP

7-72

72K

-150

.031

010

8.03

40W

313

16S

E 0

127

004

9.95

0.80

9.62

37.2

424

13ol

d qu

arry

DP

7-73

72K

-150

.031

010

8.03

40W

313

16S

E 0

127

004

8.40

0.55

10.6

028

.09

128.

440

m s

outh

of s

ampl

e D

P7-

72D

P7-

7472

K-1

50.0

221

108.

0717

W3

1216

SE

33

2725

46.

600.

550.

9141

.40

10.

3ro

ad c

utD

P7-

7572

J-4

50.0

436

107.

5957

W3

1315

SW

16

2800

47.

100.

154.

8736

.09

12.

4ro

ad c

utD

P7-

7672

J-4

50.0

528

107.

5803

W3

1315

NE

15

2700

49.

050.

205.

9028

.26

10.

2ro

ad c

utD

P7-

7772

J-4

50.0

532

107.

5726

W3

1315

SW

23

2700

48.

400.

551.

1623

.62

00.

1ro

ad c

utD

P7-

7872

J-4

50.0

019

107.

5598

W3

1215

NW

13

2750

47.

800.

307.

4537

.10

14.

9ro

ad c

utD

P7-

7972

J-4

50.0

019

107.

5598

W3

1215

NW

13

2750

45.

550.

204.

2520

.47

4130

.5sm

all o

utcr

opD

P7-

8072

G-1

349

.573

910

7.55

13W

312

15S

E 0

128

504

5.70

0.10

6.20

25.0

01

1.1

outc

rop

on h

illsi

deD

P7-

8172

G-1

349

.573

910

7.55

13W

312

15S

E 0

128

554

7.35

0.05

3.50

22.0

11

1.1

abov

e sa

mpl

e D

P7-

80D

P7-

8272

G-1

349

.564

910

7.54

55W

311

14S

W 3

128

504

5.85

0.05

3.69

24.3

57

7.9

road

cut

DP

7-83

72G

-13

49.5

734

107.

5454

W3

1114

NW

31

2875

48.

100.

208.

6821

.83

4520

.5ro

ad c

utD

P7-

8472

G-1

349

.531

310

7.52

13W

311

14N

W 0

427

754

8.25

0.05

10.3

528

.68

22.

4ro

ad c

utD

P7-

8572

G-1

349

.522

910

7.52

21W

311

14S

E 0

527

754

7.70

0.05

6.80

21.1

41

0.1

road

cut

DP

7-86

72G

-13

49.5

358

107.

5301

W3

1114

NW

08

2850

47.

150.

8011

.71

29.9

23

5.1

road

cut

DP

7-87

72G

-13

49.5

407

107.

4855

W3

1114

SW

14

2775

47.

300.

001.

8813

.72

20.

5ro

ad c

utD

P7-

8872

G-1

349

.540

710

7.42

48W

311

13N

E 0

928

504

6.50

0.40

14.5

325

.34

145.

5ro

ad c

utD

P7-

8972

G-1

349

.524

010

7.42

36W

311

13S

W 0

328

254

7.40

0.40

10.8

924

.20

40.

6ou

tcro

p si

de o

f cou

lee

DP

7-90

72G

-13

49.5

256

107.

4233

W3

1113

NW

03

2825

47.

100.

053.

5618

.34

20.

3ou

tcro

p ne

ar to

p of

cou

lee

DP

7-91

72G

-13

49.5

711

107.

3830

W3

1112

SW

31

2775

47.

100.

052.

0812

.48

10.

7ro

ad c

utD

P7-

9272

G-1

349

.555

410

7.35

34W

311

12S

W 2

827

504

8.10

0.05

1.67

17.2

78

8.1

road

cut

DP

7-93

72F-

1649

.571

510

8.07

46W

311

16N

E 3

328

104

6.05

0.05

n.d.

n.d.

4200

707.

5ro

ad c

ut, 1

0 ft

abov

e sa

mpl

e D

P7-

4D

P7-

9472

F-16

49.5

715

108.

0746

W3

1116

NE

33

2810

48.

050.

05n.

d.n.

d.11

9516

8.7

dupl

icat

e of

sam

ple

DP

7-93

DP

7-95

72F-

1649

.572

910

8.11

23W

311

16N

W 3

628

504

8.65

0.25

n.d.

n.d.

570

112.

4ro

ad c

ut, e

ast s

ide

DP

7-96

72F-

1649

.571

410

8.11

17W

311

16N

W 3

128

754

8.80

0.10

n.d.

n.d.

520

122.

6qu

arry

, 100

m e

ast o

f sam

ple

DP

7-43


Sam

ple

NTS

N L

atW

Lon

gM

erTw

pR

geSe

ctEl

evat

ion

(ft)

Siev

ed

(mm

)+1

.7 m

mM

agne

tics

Hea

vy M

iner

als

Com

men

ts

Sam

ple

Mas

s (k

g)M

asse

s of

frac

tions

in g

ram

sG

old

grai

ns,

coun

t

Au,

fire

ass

ay

on -1

.7 m

m

frac

tion

(ppb

)

DP

7-97

72F-

1649

.573

510

8.12

12W

311

17N

W 3

627

104

8.10

0.10

n.d.

n.d.

550

50.6

3 m

abo

ve s

ampl

e D

P7-

51D

P7-

9872

F-16

49.5

729

108.

1422

W3

1117

NE

34

2800

46.

250.

20n.

d.n.

d.44

012

6.4

10 m

wes

t of s

ampl

e D

P7-

53D

P7-

9972

F-16

49.5

704

108.

0934

W3

1116

SW

32

2825

46.

650.

05n.

d.26

.17

n.d.

0.8

cros

sbed

ded

sand

abo

ve lo

wer

con

glom

erat

eD

P7-

100

72F-

1649

.570

410

8.09

34W

311

16S

W 3

228

254

7.30

0.95

n.d.

29.2

0n.

d.61

.2th

ick

sand

, sou

th e

nd d

isco

very

qua

rry

DP

7-10

172

F-16

49.5

658

108.

0938

W3

1116

SW

32

2850

47.

900.

30n.

d.n.

d.27

7027

4.5

adja

cent

to s

ampl

e D

P7-

39D

P7-

102

72F-

1649

.572

710

8.10

17W

311

16N

E 3

128

504

7.90

0.20

n.d.

n.d.

150

25.5

adja

cent

to s

ampl

e D

P7-

41D

P7-

103

72F-

1649

.572

710

8.10

06W

311

16N

E 3

128

254

7.40

0.15

n.d.

n.d.

3110

.430

m e

ast o

f sam

ple

DP

7-40

DP

7-10

472

K-1

50.0

427

108.

0230

W3

1315

NW

07

2750

47.

600.

35n.

d.n.

d.23

9so

uth

face

qua

rry

DP

7-10

572

J-4

50.0

623

107.

5948

W3

1315

SW

28

2650

47.

750.

25n.

d.n.

d.15

7.7

quar

ry, n

orth

sid

e of

road

DP

7-10

672

J-4

50.0

019

107.

5598

W3

1215

NW

13

2750

47.

050.

05n.

d.n.

d.5

2.2

sand

abo

ve s

ampl

es D

P7-

78 a

nd D

P7-

79D

P7-

107

72G

-13

49.5

734

107.

5454

W3

1114

NW

31

2875

49.

950.

05n.

d.n.

d.9

1.1

sam

e lo

catio

n as

sam

ple

DP

7-83

DP

7-10

872

G-1

349

.573

010

7.55

03W

311

15N

E 3

628

504

8.65

0.05

n.d.

n.d.

73.

6ro

ad c

ut, 6

0 m

wes

t of s

ampl

e D

P7-

107

NO

TES:

n.d.

, not

det

erm

ined

; DP

7-93

, res

ults

are

not

val

id d

ue to

con

tam

inat

ion

by p

revi

ousl

y ru

n co

ntro

l sam

ple;

and

**,

loca

tion

of s

ampl

e fa

ll ou

tsid

e th

e lim

its o

f Fig

ure

6.


Documents

L.S. Beck - Microsoft€¦ · Gold grains recovered from heavy mineral concentrate, sample DP7-95 (photomicrograph by B. Gartner, Saskatchewan Research Council). This report is available