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ASX Code: IMA 08 March 2013
IMAGE’S BOONANARRING DEVELOPMENT PLANS BOOSTED.
JORC RESOURCES INCREASED BY 80% AND NOW CONFIRMED OVER 8km STRIKE LENGTH
_________________________________________________________________________________
New drilling confirms major central section of the Boonanarring heavy mineral (HM) deposit resulting in an additional JORC Indicated Resource at Block C of 5.1Mt @ 7.5% Valuable Heavy Mineral (VHM), containing 380kt of VHM at a 2.5% HM cut‐off.
An additional Inferred Resource of 3.4Mt @4.6% VHM containing 160 Kt of VHM has also been defined, chiefly on the western strandline.
This discovery brings the currently defined Boonanarring total Resources to 18.8Mt @ 5.9% VHM containing 1.1 Mt of VHM at a 2.5% HM cut‐off (see Table 3 for full details of the combined Measured, Indicated and Inferred Resources).
Delivery against exploration and feasibility study targets continues to exceed expectations.
Highlights
The average Zircon content of this new JORC Indicated Resource has increased from the conservative estimate of 11% of HM, which was used in the preliminary analysis work carried out in May and June 2012, to 26% of HM, at a cut‐off grade of 2.5% HM.
As with Block B to the north, geological analysis shows two strandlines (see Figures 5a and 5b). The eastern strandline contains continuous zones of high Zircon grades. At a cut‐off grade of 2.5% HM, the eastern strandline contains an Indicated Resource of 2.9Mt @ 9.1% VHM with 31% of the HM being Zircon.
At a 2.5% HM cut‐off grad, the HM grade in the Indicated Resource within the Block C western strandline is 6.5% HM, with 13.4% of the HM being Zircon. Together with the potential to upgrade a proportion of the new Inferred Resources to Indicated Category by further drilling, this indicates the potential for extending the mineable extent of the mineralisation, leading to prolonged mine life.
2nd Floor, 16 Ord Street West Perth WA 6005
PO Box 644 West Perth WA 6872
Telephone 08 9485 2410 Facsimile 08 9485 2840 [email protected] www.imageres.com.au
ABN 57 063 977 579
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The combination of such high grades with the presence of part of the mineralisation closer to surface confirms this eastern strandline as a very attractive initial mining target.
The currently defined Resources extend over a strike length of 8 km in Blocks B, C and D. (see Figure 1). Drilling has recently been completed in the 2.2 km strike length of the northern Block A and a 1.9 km southern extension in Block E. In addition, further infill drilling has been carried out in Blocks D and to the west of Block C, where the initial drilling showed potential for resources in addition to those reported in this release.
While full assay results are not yet available from drilling in these additional areas, the combination of magnetometer results and visual estimates from the drill samples provides a high degree of confidence that similar grades of mineralisation are continuous over the full 12km strike length at Boonanarring from Block A to Block E.
Image plans to release an update on these extensions to the mineralisation into Blocks A, D and E in early April, together with an upgrade of the western strandline resources in Block C from Inferred to Indicated category.
Block C Resource Estimate
The Boonanarring deposit, located 90km north of Perth, forms part of Image’s North Perth Basin mineral sands project.
Using its in‐house magnetic expertise, Image identified the potential for a significant enlargement of the Boonanarring deposit, previously only covered by Mining Lease M70/1194 (acquired from Iluka Resources Limited in March 2011). With the drilling of this extension, the deposit has been demonstrated to span over 12km. To date all of the assay and mineralogical results have been received for the 5.5 km strike length within Blocks C and B which are located immediately north of the M70/1194 (see Figure 1). Results from Blocks A, and infill on Blocks C West, D and E are pending.
The results have enabled Image, working with Lynn Widenbar and Associates, to define a maiden JORC Indicated and Inferred Resource for the Boonanarring Block C totalling 8.5 Mt @ 6.4% VHM, containing 540kt of VHM at a 2.5% HM cut‐off.
Of particular interest are the extremely high Zircon grades in the both strandlines (see below). Table 1 summarises the resource estimate and Table 2 shows the corresponding mineral content.
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Table 1 Boonanarring Block C Resource dated 8 March 2013
INDICATED RESOURCES
Volume (million
cubic metre)
Tonnage (Mt)
HM (%)
VHM (%)
VHM Contained
(kt)
Slimes (%)
OS (%)
West Strand 1.1 2.2 6.5 5.4 120 18.3 8East Strand 1.4 2.9 11.7 9.1 260 20.0 16.5
TOTAL Indicated 2.5 5.1 9.4 7.5 380 19.3 12.8
INFERRED RESOURCE
West Strand 1.3 2.6 5.8 4.9 130 15.3 5.7
Cover Sands 0.4 0.8 4.6 3.8 30 24.2 6.5
Total Inferred 1.7 3.4 5.6 4.6 160 17.4 5.9
Total 4.2 8.5 7.9 6.4 540 18.5 10.0Notes: 2. 5% HM cut‐off Slimes: minus 63micron fraction OS: oversize, plus 1mm fraction.
Values rounded to reflect uncertainty of estimates.
Table 2 Boonanarring Block C Resource, % Mineral Content of HM
INDICATED RESOURCES
HM Contained
(kt)
ILMENITE(%)
LEUCOXENE(%)
RUTILE (%)
ZIRCON (%)
VHM Total (%)
West Strand 140 52.3 9.3 8.6 13.4 83.5East Strand 340 42.2 2.5 2.2 31.3 78.3
Total Indicated 480 45.2 4.6 4.1 26.0 79.8
INFERRED RESOURCES
West Strand 150 47.4 9.7 9.4 16.9 83.4
Cover Sands 40 64.1 5.7 5.5 7.2 82.5
Total Inferred 190 50.7 8.9 8.6 15.0 83.2
TOTAL 670 46.7 5.8 5.4 22.9 80.8
Figure 5(a) shows the variation in HM grades along the strike of the model for both the western and eastern strandlines and Figure 5(b) shows the corresponding variation in Zircon grade as modelled for both strandlines.
Appendix 1 tabulates the Block C resource estimate at various cut‐off grades. Appendix 2 defines the criteria used to determine the resource status.
Geology
The Boonanarring deposit and its extensions consist of two strandlines deposited in a historical shoreline environment along the Gingin Scarp, formed during a rise in sea level during the Pleistocene period. The western strandline sits at a base elevation of 65 ‐ 67m AHD. The higher grade eastern strandline is slightly higher, lying between 67m and 69 m AHD. This strandline is distinguished by its high Zircon contents and in Block C has been split into an upper strand containing higher Ilmenite and moderate Zircon and a lower strand containing exceptionally high Zircon. The deposits lie on a base of grey clays, silts and sands interpreted
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to be Cretaceous Leederville Formation. A younger sequence of sand, clay and Laterite has covered and preserved the strand units. Within the central 1000m of Block C, this cover sequence has been shown to contain a low grade HM accumulation, which has a higher Ilmenite content and lower Zircon content than the underlying strands. This has been defined as an Inferred resource in the current estimate (see Tables 1 and 2 and Appendix 1).
Mineralogy
The mineral assemblage of the resource estimate is based upon the analysis of 96 HM composite samples taken from every drill section over the length of the resource area and which were subjected to XRF mineralogical analysis. The composites were designed to reflect the geological interpretation of the strandlines and were created by compositing the concentrate from between 1 and 12 individual metre drill samples (with an average of 6 concentrate samples per composite). Each composite was analysed using single bead XRF and the mineral composition was calculated using a combination of industry standard elemental abundances and elemental compositions derived from testwork.
In addition, the mineralogy was assessed qualitatively by a consultant with extensive experience in the mineralogy, processing characteristics and product quality of Western Australian mineral sands deposits. Further work is planned to refine the breakdown between Ilmenite, Leucoxene and Rutile composition of the mineral assemblage. The current split is regarded as being conservative in terms of ore value.
Overall Boonanarring Resource
Using drilling and mineralogical data supplied by Iluka on Mining Lease M70/1194 (Block D), Image originally estimated a total Measured Resource at a 2.5% HM cut‐off of 3.1Mt at 7.2% HM, containing 221kt of HM (refer IMA ASX Release dated 9 March 2011). Together with Block B, the overall Boonanarring Resources was increased in October 2012 to 10.5Mt @ 5.7% VHM (10.5Mt @ 7.0% HM),
This new result for Block C increases the JORC Resources at Boonanarring to 18.8Mt* @ 5.9% VHM containing 1.1Mt of VHM at a 2.5% HM cut‐off, segregated into Measured, Indicated and Inferred categories, as shown in Table 3.
Table 3 Overall Boonanarring HM Resource dated 8 March 2013
CLASSIFICATION HM CUTOFF (%)
Volume (million
cubic metre)
Tonnage (Mt)*
HM (%)
VHM (%)
Slimes (%)
VHM (kt)
MEASURED 2.5 1.7 3.1 7.2 4.8 9.9 150INDICATED 2.5 6.0 12.3 8.1 6.5 16.8 800INFERRED 2.5 1.7 3.4 5.6 4.6 17.4 160
TOTAL 2.5 9.4 18.8 7.5 5.9 15.8 1110
*Note discrepancy due to rounding errors.
The new resource adds 154,000 tonnes of Zircon to the previously defined 123,000 tonnes, bringing the total Zircon endowment in the Boonanarring project to 277,000 tonnes.
Image is very encouraged by this major resource upgrade, which has now been defined to JORC Indicated Resource status over 8 km of the 12km prospective strike length of the deposit. It is also significant when compared to Image’s Atlas deposit, which contains 89,000 tonnes of Zircon over a 6.5km strike length.
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Other Key Activities
Other key feasibility study activities include the following.
Wet process testwork has been completed on bulk samples from both Boonanarring and Atlas.
Test samples of Boonanarring Ilmenite have been prepared for potential customers.
Test samples of Atlas Ilmenite are planned to be available by mid March.
The OEPA has confirmed the scope of the PER (Public Environmental Review) document. The majority of environmental field work at Boonanarring has been completed.
Hydrogeological investigations are on schedule. Test and production bore drilling commenced on 27 February 2013.
Process flowsheet design work is complete and other processing design work is on schedule.
Logistics and infrastructure studies are progressing.
Preliminary independent expert review of the resources, mining and processing Feasibility Study work has commenced.
A detailed “bankable” economic model is being prepared, ready for announcement of maiden economic estimates for Boonanarring in April 2013.
Future Work
Drilling on Blocks A, and infill on C West, D and E as required to bring all these resources to JORC Indicated status was completed in late February. Assay work is currently in progress at three different laboratories in order to achieve a rapid turnaround. Once all HM and mineralogy results have been received, further JORC Indicated Resources are expected to be announced for these blocks, over the full 12km strike length, in early April 2013.
Concluding Comments
Image Resources Managing Director, Peter Davies, said “This result is a key step towards development of Boonanarring as a high grade, low capital cost, rapid payback project”.
“The overall VHM grade and particularly the Zircon grade are higher than most other existing or planned operations. Coupled with the excellent existing local infrastructure and availability of experienced employees, Boonanarring is shaping up as an ideal start‐up operation for a company of Image’s size”, Mr Davies said.
He added that the Company has made significant progress in all areas of the environmental studies, process testwork and other key technical studies. With this phase of exploration drilling completed and all other Feasibility Study elements on schedule for completion in July, the Company continues to deliver against its targets.
“This has been a great team effort by a dedicated group of employees and consultants, through a very intense period of field studies and resource work”, Mr Davies said. “Our thanks are due to them and to the local landowners who have been so supportive throughout this time”.
“Now we are looking forward to seeing the initial economic results for the project which will provide an update on the valuation of both the project and the Company”.
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Figure 1 Boonanarring Exploration Targets and Drilling March 2013
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Figure 2. Section on Line 31 200 (refer Figure 1 for location)
Section on Line 30 200 (refer Figure 1 for location)
Figure 4. Section on Line 29 200 (refer Figure 1 for location)
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Figure 5:
Perspective view of Block B & Block C stran
dlin
es. Blocks coloured by (a) Interpolated HM Grade and (b) Interpolated Zircon Grade as % of HM
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For more information on the company visit www.imageres.com.au
Please direct enquiries to: Peter Davies George Sakalidis Managing Director Executive Exploration Director Phone +61 8 9485 2410 Phone +61 8 9485 2410 Mob +61 409 296 676 Mob +61 411 640 337
COMPETENT PERSON’S STATEMENT – EXPLORATION RESULTS
The information in this presentation is based on information compiled by Paul Leandri BAppSc who is a member of the Australasian Institute of Mining and Metallurgy. Paul Leandri is an employee of Image Resources NL. He has sufficient experience which is relevant to the style of mineralisation and type of deposit under consideration and to the activity which he is undertaking to qualify as a Competent Person as defined in the 2004 edition of the ‘Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves’. Paul Leandri consents to the inclusion of this information in the form and context in which it appears in this presentation.
COMPETENT PERSON’S STATEMENT – RESOURCE ESTIMATES
The information in this presentation that relates to mineral resources is based on information compiled by Lynn Widenbar BSc, MSc, DIC MAusIMM MAIG employed by Widenbar & Associates who is a consultant to the Company. Lynn Widenbar has sufficient experience which is relevant to the style of mineralisation and type of deposit under consideration and to the activity which he is undertaking to qualify as a Competent Person as defined in the 2004 edition of the ‘Australasian Code of Reporting of Exploration Results, Mineral Resources and Ore Reserves’. Lynn Widenbar consents to the inclusion of this information in the form and context in which it appears in this presentation.
COMPETENT PERSON’S STATEMENT – PROJECT EVALUATION
The information in this presentation that relates to project evaluation is based on information compiled by Peter Davies BSc Eng (Hons) ARSM, C.Eng. MIMMM, FAusIMM FRSA, who is a Fellow of the Australasian Institute of Mining and Metallurgy. Peter Davies is Managing Director/Project Manager of Image Resources NL. Peter Davies has sufficient experience which is relevant to the style of mineralisation and type of deposit under consideration and to the activity which he is undertaking to qualify as a Competent Person as defined in the 2004 edition of the ‘Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves’. Peter Davies consents to the inclusion of this information in the form and context in which it appears in this report.
FORWARD LOOKING STATEMENTS
Certain statements made during or in connection with this communication, including, without limitation, those concerning the economic outlook for the mining industry, expectations regarding prices, exploration or development costs and other operating results, growth prospects and the outlook of Image’s operations contain or comprise certain forward looking statements regarding Image’s operations, economic performance and financial condition. Although Image believes that the expectations reflected in such forward-looking statements are reasonable, no assurance can be given that such expectations will prove to have been correct.
Accordingly, results could differ materially from those set out in the forward looking statements as a result of, among other factors, changes in economic and market conditions, success of business and operating initiatives, changes that could result from future acquisitions of new exploration properties, the risks and hazards inherent in the mining business (including industrial accidents, environmental hazards or geologically related conditions), changes in the regulatory environment and other government actions, risks inherent in the ownership, exploration and operation of or investment in mining properties, fluctuations in prices and exchange rates and business and operations risks management, as well as generally those additional factors set forth in our periodic filings with ASX. Image undertakes no obligation to update publicly or release any revisions to these forward-looking statements to reflect events or circumstances after today’s date or to reflect the occurrence of unanticipated events.
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Appendix 1 Block C Indicated Resource by Cut‐off Grade
Table A1: Indicated Resource Tonnes and Grade
Strand Cut‐Off Volume (k BCM)
Resource(kt)
HM (%)
VHM (%)
SLIMES (%)
OS (%)
VHM (kt)
WEST 10.0 140 280 12.4 10.6 24.1 14.1 30
WEST 5.0 660 1,340 8.1 6.8 18.1 9.7 90
WEST 4.0 870 1,750 7.3 6.1 18.5 8.7 110
WEST 3.0 1,050 2,120 6.6 5.5 18.5 8.1 120
WEST 2.5 1,100 2,210 6.5 5.4 18.3 8.0 120
WEST 2.0 1,120 2,240 6.4 5.3 18.1 8.0 120
WEST 1.0 1,130 2,270 6.4 5.3 18.1 7.9 120
EAST ‐ UPPER 10.0 390 840 20.1 17.2 17.7 16.9 150
EAST ‐ UPPER 5.0 620 1,330 15.4 13.1 19.2 17.2 170
EAST ‐ UPPER 4.0 670 1,440 14.6 12.4 19.6 17.6 180
EAST ‐ UPPER 3.0 710 1,520 14.0 12.0 19.8 17.7 180
EAST ‐ UPPER 2.5 720 1,530 13.9 11.9 19.8 17.7 180
EAST ‐ UPPER 2.0 720 1,540 13.9 11.9 19.8 17.7 180
EAST ‐ UPPER 1.0 720 1,540 13.9 11.9 19.8 17.7 180
EAST ‐ LOWER 10.0 210 450 16.1 11.9 20.1 19.7 50
EAST ‐ LOWER 5.0 450 970 11.3 7.7 20.6 16.6 80
EAST ‐ LOWER 4.0 550 1,160 10.2 6.9 20.5 15.9 80
EAST ‐ LOWER 3.0 610 1,280 9.5 6.3 20.3 15.4 80
EAST ‐ LOWER 2.5 640 1,360 9.2 6.0 20.3 15.1 80
EAST ‐ LOWER 2.0 660 1,390 9.0 5.9 20.2 15.0 80
EAST ‐ LOWER 1.0 670 1,410 8.9 5.9 20.2 14.9 80
TOTAL 10.0 740 1,580 17.6 14.5 19.5 17.2 230
TOTAL 5.0 1,740 3,640 11.6 9.4 19.2 14.3 340
TOTAL 4.0 2,090 4,360 10.5 8.4 19.4 13.5 370
TOTAL 3.0 2,370 4,920 9.7 7.7 19.4 13.0 380
TOTAL 2.5 2,460 5,100 9.4 7.5 19.3 12.8 380
TOTAL 2.0 2,490 5,170 9.3 7.4 19.2 12.7 390
TOTAL 1.0 2,510 5,210 9.3 7.4 19.2 12.7 390
Note: 1. Tonnages rounded to reflect uncertainty of estimate. 2. Slimes <63 micron 3. OS > 1mm
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Table A2: Indicated Resource VHM Grades as % of Total HM
Strand Cut‐Off HM (kt)
ILMENITE (%HM)
LEUCOXENE (%HM)
RUTILE (%HM)
ZIRCON (%HM)
VHM (%HM)
WEST 10.0 30 53.5 6.8 5.8 19.1 85.2
WEST 5.0 110 51.6 9.2 8.4 14.8 84.0
WEST 4.0 130 51.9 9.3 8.6 14.0 83.7
WEST 3.0 140 52.0 9.3 8.6 13.6 83.6
WEST 2.5 140 52.3 9.3 8.6 13.4 83.5
WEST 2.0 140 52.4 9.3 8.5 13.3 83.5
WEST 1.0 140 52.5 9.3 8.5 13.2 83.4
EAST ‐ LOWER 10.0 170 37.7 2.3 1.8 44.0 85.9
EAST ‐ LOWER 5.0 210 37.5 2.6 2.0 43.0 85.1
EAST ‐ LOWER 4.0 210 37.5 2.7 2.2 42.9 85.3
EAST ‐ LOWER 3.0 210 37.6 2.8 2.4 42.7 85.5
EAST ‐ LOWER 2.5 210 37.7 2.9 2.4 42.6 85.5
EAST ‐ LOWER 2.0 210 37.6 2.9 2.4 42.6 85.5
EAST ‐ LOWER 1.0 210 37.6 2.9 2.4 42.7 85.6
EAST ‐ UPPER 10.0 70 51.9 2.2 2.2 17.2 73.6
EAST ‐ UPPER 5.0 110 50.6 2.1 2.1 13.8 68.6
EAST ‐ UPPER 4.0 120 50.4 2.1 2.0 12.9 67.5
EAST ‐ UPPER 3.0 120 50.1 2.0 2.0 12.4 66.5
EAST ‐ UPPER 2.5 130 49.9 2.0 2.0 12.1 65.9
EAST ‐ UPPER 2.0 130 49.9 2.0 1.9 11.9 65.7
EAST ‐ UPPER 1.0 130 49.9 2.0 1.9 11.9 65.6
TOTAL 10.0 280 43.4 2.8 2.5 33.8 82.6
TOTAL 5.0 420 44.5 4.1 3.7 28.2 80.6
TOTAL 4.0 460 44.9 4.4 3.9 27.0 80.2
TOTAL 3.0 480 45.1 4.5 4.1 26.3 80.0
TOTAL 2.5 480 45.2 4.6 4.1 26.0 79.8
TOTAL 2.0 480 45.2 4.6 4.1 25.9 79.8
TOTAL 1.0 480 45.2 4.6 4.1 25.9 79.7
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Table A3: Inferred Resource Tonnes and Grades
Strand Cut‐Off Volume (k BCM)
Resource (kt)
HM (%)
SLIMES (%)
OS (%)
VHM (%)
VHM (kt)
210 WEST 10.0 130 260 12.3 13.9 5.3 10.7 30
210 WEST 5.0 650 1,300 7.9 13.9 5.6 6.7 90
210 WEST 4.0 950 1,890 6.8 14.8 5.6 5.7 110
210 WEST 3.0 1,230 2,450 6.1 15.3 5.7 5.1 120
210 WEST 2.5 1,320 2,640 5.8 15.3 5.7 4.9 130
210 WEST 2.0 1,350 2,690 5.8 15.2 5.7 4.8 130
210 WEST 1.0 1,350 2,700 5.8 15.2 5.7 4.8 130
COVER SAND 10.0 2 5 10.3 29.3 5.9 8.7 0
COVER SAND 5.0 130 300 6.7 26.2 7.5 5.7 20
COVER SAND 4.0 200 440 6.0 26.0 7.3 5.1 20
COVER SAND 3.0 260 570 5.4 25.4 6.9 4.5 30
COVER SAND 2.5 380 810 4.6 24.2 6.5 3.8 30
COVER SAND 2.0 500 1,070 4.0 23.0 6.1 3.3 40
COVER SAND 1.0 500 1,070 4.0 23.0 6.1 3.3 40
TOTAL 10.0 130 260 12.3 14.2 5.4 10.7 30
TOTAL 5.0 790 1,590 7.7 16.2 6.0 6.5 100
TOTAL 4.0 1,150 2,330 6.7 16.9 5.9 5.6 130
TOTAL 3.0 1,490 3,020 6.0 17.3 5.9 5.0 150
TOTAL 2.5 1,700 3,450 5.6 17.4 5.9 4.6 160
TOTAL 2.0 1,860 3,770 5.3 17.4 5.8 4.4 160
TOTAL 1.0 1,860 3,770 5.3 17.4 5.8 4.4 160
Note:
1. Tonnages rounded to reflect uncertainty of estimate. 2. Slimes <63 micron 3. OS > 1mm
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Table A4: Inferred Resource VHM Grades as % of Total HM
Strand Cut‐Off HM (kt)
ILMENITE (%HM)
LEUCOXENE (%HM)
RUTILE (%HM)
ZIRCON (%HM)
VHM (%HM)
210 WEST 10.0 30 46.7 6.9 7.3 26.1 86.9
210 WEST 5.0 100 47.1 8.9 9.1 19.4 84.6
210 WEST 4.0 130 47.7 9.3 9.1 18.0 84.0
210 WEST 3.0 150 47.3 9.6 9.4 17.3 83.5
210 WEST 2.5 150 47.4 9.7 9.4 16.9 83.4
210 WEST 2.0 160 47.7 9.6 9.3 16.8 83.4
210 WEST 1.0 160 47.7 9.6 9.3 16.8 83.4
UPPER SAND 10.0 0 73.3 2.3 2.7 6.5 84.9
UPPER SAND 5.0 20 64.0 7.3 6.6 7.4 85.2
UPPER SAND 4.0 30 62.3 8.0 7.4 7.5 85.1
UPPER SAND 3.0 30 62.5 7.4 7.0 7.4 84.3
UPPER SAND 2.5 40 64.1 5.7 5.5 7.2 82.5
UPPER SAND 2.0 40 64.8 4.6 4.6 7.0 81.0
UPPER SAND 1.0 40 64.8 4.6 4.6 7.0 81.0
TOTAL 10.0 30 47.1 6.8 7.2 25.8 86.9
TOTAL 5.0 120 49.9 8.7 8.7 17.5 84.7
TOTAL 4.0 160 50.1 9.0 8.8 16.2 84.2
TOTAL 3.0 180 49.9 9.2 9.0 15.6 83.7
TOTAL 2.5 190 50.7 8.9 8.6 15.0 83.2
TOTAL 2.0 200 51.4 8.5 8.3 14.6 82.8
TOTAL 1.0 200 51.4 8.5 8.3 14.6 82.8
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Appendix 2 Boonanarring North Extension Resource Classification Criteria
Criteria Explanation
SAMPLING TECHNIQUES AND DATA
Sampling Techniques Air core drilling samples
Drilling techniques. Vertical NQ air core holes
Drill sample recovery. Sample quality is logged at time of drilling. No relationship between grade and recovery is known to exist
Logging. Chip samples are logged for colour, grainsize, presence of induration and estimates are made of HM, Slimes and Oversize content using hydraulic panning.
Sub‐sampling techniques and sample preparation.
Samples were rotary split on site to reduce the sample size from about 8kg to 1.5 kg.
Quality of assay data and laboratory tests.
Samples were assayed by Diamond Recovery Services. DRS conduct routine duplicate assaying of 4% of samples.
Verification of sampling and assaying.
Replicate samples taken at rate of 1 in 50 for check assay at original laboratory.Separate replicate samples taken at 1 in 100 for umpire assay at different laboratory
Location of data points. Collars were surveyed by differential GPS. The rig mast is set up vertical and holes are assumed to be drilled vertical.
Data spacing and distribution. Drill holes are spaced at 20 metres apart within the resource area and 40 to 80m apart on the edges. Drill lines are approximately 200 m apart. Assay results have only been completed for samples estimated to contain >0.5%HM. The sampling interval was 1 metres. Sample compositing only took place for mineral assemblage determinations with between 1 and 12 samples composited into individual mineralogical composites.
Orientation of data in relation to geological structure.
Drill lines are oriented at approximately 90 degrees to the strike. No biased sampling of structure has occurred.
Audits or reviews. CSA Global has been engaged to undertake independent audits. To date the review and audit process has not identified any material deficiencies.
Mineral tenement and land tenure status.
The area for the new resource lies within granted exploration licence E70/30041, held 100% by Image Resources. Land tenure is freehold land owned by one landowner located between 2 shire road reserves. Previously reported Measured Resource is located on granted Mining Lease M70/1194, for which land tenure is freehold land held by three parties.
Exploration done by other parties. None for this resource estimate. Exploration done by Iluka used as the basis for resource estimate in M70/1194, which comprises ~16% of overall resource.
Geology. The deposit is a typical strandline hosted mineral sand deposit with later cover sands and clays.
ESTIMATION AND REPORTING OF MINERAL RESOURCES
Database integrity. All of the samples were logged electronically using an industry standard logging program designed to preclude transcription errors. Assay data is presented electronically and both manually and electronically checked prior to loading into the database. The database is validated for missing intervals, duplicate samples, missing coordinates, hole name mismatches and EOH mismatch between collar and downhole data.
Geological interpretation. The data quality affords a high degree of confidence in the geological interpretation.
Dimensions. The deposit is 3.3km long, The Eastern Strand is 60‐140m wide and 5‐18m thick. The Western strand varies between 40 and 180m wide and 3 – 12m thick
Estimation and modelling techniques.
Ordinary Kriging interpolation for HM, Slimes and OS, nearest neighbour for assemblage data. Model and data constrained by mineralisation wireframe solids with initial search radius of 250m x 50m x 3m, minimum 2 samples, max 12. Assemblage data and hardness estimated by nearest neighbour. Considered suitable for type of deposits and level of information.
Moisture. The tonnage is estimated on a dry basis.
Cut‐off parameters. 2.5% HM for “high grade” mineral envelope. Various geological parameters for basement and lithology zones.
Mining factors or assumptions. The deposit is likely to be mined by elevating scrapers or dozers pushing to traps.
Metallurgical factors or assumptions.
Testwork indicates that the mineralisation can be efficiently processed by traditional mineral sands methods, i.e. spirals, attritioning and magnetic/electrostatic separation.
Bulk density. Assumed according to formula using grade of HM, slime and oversize as inputs.
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