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Artemis Resources Limited — Capital/Financing Update 2018
Dec 18, 2018
10429_rns_2018-12-18_37231db1-ffc1-46dd-a57a-0bc99dad067e.pdf
Capital/Financing Update
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ASX / MEDIA ANNOUNCEMENT
19 December 2018
ASX : ARV FRANKFURT : ATY U.S. OTCQB : ARTTF
GOLD, COBALT AND COPPER IN THE WEST PILBARA
ARTEMIS RESOURCES LIMITED IS AN AUSTRALIAN MINERAL DEVELOPER ADVANCING ITS WEST PILBARA BASE, BATTERY AND PRECIOUS METALS ASSETS TOWARDS PRODUCTION.
ARTEMIS HAS CONSOLIDATED A MAJOR LAND HOLDING IN THE WEST PILBARA AND IS THE 100% OWNER OF THE RADIO HILL OPERATIONS AND PROCESSING INFRASTRUCTURE, STRATEGICALLY LOCATED 30 KM FROM THE CITY OF KARRATHA, THE POWERHOUSE OF THE PILBARA.
WANT TO KNOW MORE ABOUT ARTEMIS?
Please Contact:
Edward Mead – Executive Director E: [email protected]
Wayne Bramwell – Chief Executive Officer E: [email protected]
David Tasker – Media Advisor E: [email protected] P : +61 433 112 936
Or visit the Artemis Website or follow us on Twitter
ARTEMIS RESOURCES LIMITED
Suite 1, 11 Ventnor Ave West Perth WA Australia, 6005
WEERIANNA GOLD PROJECT RESOURCE UPDATE
Inferred, Shallow Resource of 975Kt @ 2.0 g/t Au
for 62,739 contained Oz Au
Artemis Resources Limited (“Artemis” or “the Company”) (ASX:ARV, Frankfurt, US OTC:ARTTF) is pleased to announce the latest resource estimate for the company’s 80% owned Weeriana Gold Project in the West Pilbara region of Western Australia.
The October 2018 resource estimate is classified as Inferred (JORC 2012 Code for reporting Mineral Resources).
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Figure 1: Shallow Trenching at Weeriana
Artemis’ Chief Executive Officer Wayne Bramwell commented:
“Artemis has drilled 37,000m across eight of its projects in the last 12 months to best determine which sites warrant more exploration expenditure.
“Weeriana has only been drilled to an average depth of 69m and as a shallow, quartz vein style gold resource may have the potential to increase in scale with deeper drilling.”
P : +61 8 6319 0000 E : [email protected] www.artemisresources.com.au Twitter - @Artemis_ARV
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WEERIANNA GOLD PROJECT RESOURCE UPDATE
Artemis undertook a reverse circulation (RC) drilling program in 2018 comprising 19 drillholes for a total of 1,644m. Drilling tested for extensions to previously interpreted locations for mineralisation and to provide confirmation of previous results. This announcement provides an updated resource estimate incorporating both the Company’s recent drilling data and drilling data collected during exploration previously undertaken by other companies.
The Weerianna Gold Project (‘Weerianna” or the Project) is located in the West Pilbara region of Western Australia, approximately 25km east of Karratha and 5km west of Roebourne ( Figure 2 ) and is adjacent to the North West Coastal Highway. Weerianna is situated on granted mining lease M47/223 (granted until 27 December 2031). M47/223 is 100% held by Western Metals Pty Ltd, an entity in which Artemis has an 80% interest (via its wholly owned subsidiary, Karratha Metals Pty Ltd). The deposit is 35km by road to the Radio Hill plant where a new gravity gold circuit has recently been installed.
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Figure 2: Weerianna Gold Project Location Map
RESOURCE MODELLING AND CLASSIFICATION
The October 2018 Weerianna resource estimate was performed by Mrs Fleur Muller, Director of Geostat Services Pty Ltd (“Geostat”), using Surpac software, utilising historic data and data from the recent RC drilling program completed by Artemis. Mrs Muller has over 22 years of experience in geostatistical resource estimation and meets the requirements for a Competent Person as defined by JORC guidelines.
A classified mineral resource for the Weerianna deposit was calculated by Geostat (as of 27[th] October 2018) to be 975,700 tonnes at 2 g/t Au for 62,700 ounces (above a cut-off of 1 g/t Au).
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Tonnages were applied on a wet basis, as the resource density was derived from gamma density values measured downhole. Diamond density holes will allow the application of a dry tonnage to be applied, resulting in a slight reduction in the total tonnage. Classification of the resource involved several criteria, including drill hole spacing, sampling density, sampling locations, lode geometry, QAQC, bulk density and confidence in grade continuity.
Lodes were classified as Inferred on the basis of the above criteria. A wet density of 2.39t/m[3] (oxide), 2.44t/m[3] (transitional) and 2.87t/m[3] (primary) was used to estimate resource block tonnage for all lodes.
No mining and metallurgical modifying factors have been applied. It is considered that the Mineral Resource may be practically mined by selective open cut mining methods using conventional mining techniques and equipment. It is expected that the various upgrades planned or in progress at the Radio Hill plant allow for processing the Weerianna material. However, no processing test work has been undertaken as yet. The reporting cut-off grade of 1.0g/t Au takes into account these conditions.
The classified Mineral Resource is tabulated in Table 1 as at 27[th] October 2018 and is reported beneath the topography surface using a 1g/t Au cut-off. Tonnage has dropped by approximately 3% from the previous reported estimate (refer ASX 26 June 2014) as the transitional density of 2.39 for the 2018 resource is lower than that of 2.6 used for the 2009 resource, and this material carries the bulk of the resource tonnage. Another contributing factor is that the recent WERC holes have generally reported lower grades.
Table 1 Inferred Mineral Resource Estimate – Weerianna Gold Project (October 2018 -above a 1.0 g/t Au cut off)
| Material Type | Volume | Tonnage1 | Gold Grade | Au Metal (oz) |
|---|---|---|---|---|
| (cubic metres) | (tonnes) | (g/t Au) | ||
| Oxide | 52,891 | 126,409 | 2.15 | 8,738 |
| Transition | 265,125 | 649,556 | 2.03 | 42,394 |
| Fresh | 69,594 | 199,734 | 1.82 | 11,687 |
| Total | 387,609 | 975,699 | 2.00 | 62,739 |
1 NOTE tonnage is calculated on a wet tonnage basis,.
DATA INFORMING THE ESTIMATE
Project Geology
The project area mainly comprises rock types belonging to the Roebourne Group of greenstones. Two formations can be distinguished: the basal Ruth Well Formation consisting of ultramafic and mafic volcanic rocks including metabasalt, serpentinised peridotitic komatiite, talc-chlorite schist, grey- and white-banded chert and black chert. Conformably overlying is the dominantly sedimentary unit, the Nickol River Formation. Major rock types include grey- and white-banded chert, ferruginous chert, BIF (Banded Iron Formation), fine-grained clastic sedimentary rocks, quartzite, felsic volcanic rocks, carbonate-rich sediments and also conglomerates ( Figure 3 ).
The rock types present at Weerianna mainly consists of poorly outcropping ultramafic chlorite-serpentinite schists showing variable amounts of silicification and carbonate alteration. Moderately thick to narrow cherty intercalations representing interflow sedimentary rocks are frequently found within the ultramafic schist sequence.
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Other lithologies present include BIF and a substantial amount of mainly white quartz veins varying in thickness between 1cm and several metres.
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Figure 3: Project Geology and Tenement Plan
Drill holes intersected ultramafic rock types in excess of 80m thick and in several of these holes, wide zones of distinctly spinifex textured ultramafics were found. These schists are found mainly north of a prominent ridge of banded chert which forms the backbone of impressive ridges between Weerianna and Carlow Castle, 7km to the SW. However, ultramafics intercalations are also present within this main chert sequence but these are very poorly outcropping as they are often covered by thick chert scree shedding off the ridges.
Recent investigations by the GSWA found these cherts to be much brecciated and totally silicified mafic cataclastic rocks. These outcrops are associated with shearing and mylonitization along the Regal Thrust. At Weerianna this chert is an almost black, cherty microbreccia that is net-veined by quartz with local gossanous lenses.
The 500m wide zone of ultramafic schists and cherts lies between two relatively competent basaltic terrains. The northern basalt is poorly outcropping but the southern forms substantial hills comprising dark coloured basaltic rock types. These basalts are intruded by gabbroic rocks belonging to the Andover Intrusive Complex which is the largest differentiated Intrusive Complex in the West Pilbara.
Relatively late fresh undeformed micro dolerite intrusions have been intersected in several holes.
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The chert-ultramafic sequence at Weerianna represents portions of both the Ruth Well and Nickol River Formation of the Roebourne Group of greenstones. The southern basalt forms part of the Ruth Well Formation. The identity of the northern basalts is not certain, but these are likely to belong to the Regal Formation.
At Weerianna, the dominant structural and lithological trend is north-easterly with a generally moderate to steep south-easterly dip. The schistosity is parallel to the bedding and controls the quartz veining. At places the schistosity and quartz veins are folded.
The depth of weathering as found during drilling varies but is generally around 50 to 60 m in mineralised areas.
Mineralisation
Epigenetic gold (with or without copper) within the West Pilbara is almost invariably associated with shearing and faulting in a variety of geological settings. Favourable settings including sheared units are associated with the Regal Thrust (including Weerianna), splay faulting associated with the Sholl Shear Zone and also around the edges of several mafic/ultramafic intrusions.
At the Weerianna Mining Centre gold mineralisation is associated with quartz veining within chlorite-serpentine schists which have undergone variable degrees of silicification and carbonate alteration. Sulphides including pyrite, arsenopyrite and chalcopyrite are sometimes present in substantial amounts.
The gold deposits are hosted by strongly sheared schists of the Roebourne Group within or immediately beneath the Regal Thrust. The quartz veins generally strike between N and E-NE and the main ore zone dips 70° to the south east.
Other nearby gold prospects within a similar geological setting are found at Carlow Castle, Sing Well, Camper Day and No. Six Well. They are all close to the brecciated chert horizon (Regal Thrust) and are either hosted by schists or are found as small discontinuous quartz veins in basalts. This “gold belt” can be traced for more than 20km.
Drilling
Artemis recently completed an RC drilling program at Weerianna of 19 RC drillholes, totalling 1,644m. Artemis drilling combined with exploration drilling done by previous companies totals 163 RC holes, 3 percussion holes and 5 diamond drillholes for 11,827m. Drill hole depths vary from 30m to 180m, averaging 69m.The hole collar listing for all holes and downhole surveys for Artemis holes can be found in Appendix 1 and Appendix 2.
Sampling and Assay
The majority of samples are derived from RC drilling where 1m downhole samples were collected via a cyclone and passed through either a riffle splitter (historic drilling) or cone splitter (Artemis) to yield a subsample of 2-4kg for assay.
Several assay procedures have been employed with the historic drillholes, which in summary include aqua regia digest followed by AAS of Au followed by fire assay with AAS finish if the gold values were above a defined threshold e.g. 0.5g/t. In addition, when the fire assay exceeded 5g/t another fire assay was done on a split from the original coarse residue.
Samples from Artemis drillholes were assayed for gold by 50g fire assay with AAS finish. Additionally, multi element (33) analyses by 4 acid ICP AES was performed on samples taken by Artemis.
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QAQC procedures included, insertion of blanks and reference materials, field duplicate sampling and analysis of historical coarse residue resplits and lab pulp repeats. Geostat’s assessment of 2018 QAQC results for standards was fair, with several values reporting outside the 3SD threshold. The results for blanks indicate the laboratory had acceptable processes in place to minimise sample to sample contamination. Field duplicate results show a fair correlation with a slight bias at higher grades.
Geostat notes that no firm conclusions could be made with respect to historical field duplicates due to differing sample preparation methods. Similarly, for coarse residue analyses the absence of using the same standards and blanks at all three laboratories makes it impossible to draw definite conclusions.
Geological Model
The Weerianna deposit is located within a chert-ultramafic schist sequence, on the overturned eastern limb of an ENE trending syncline. Mineralisation at Weerianna is associated with quartz veins, which are controlled by the schistosity present.
Four distinct mineralisation zones comprise the deposit, with an overall east-west trend and steep dip of approximately -80° towards grid south. 18 wireframes were delineated from sectional outlines to represent all mineralisation within these zones. A combination of assays and lithology were used to define these wireframe envelopes, with a cut-off of approximately 0.5 g/t Au to separate mineralisation from waste.
The wireframed lodes extend over a distance of 600m along-strike, with a maximum down-dip extent of 120m.
Statistics
Log histograms and probability plots of all elements exhibit mixing of populations, likely caused by the presence of both structural and vein related mineralisation. Top-cuts of either 10g/t Au or 20g/t Au were applied to selected lodes in order to constrain extreme values and reduce their impact on estimated grades. Upper inflexion points in probability distribution plots and a high coefficient of variation were used as a guide to determining top-cuts for these wireframes.
Variography
Variography analysis using lognormal variograms was completed on combined composites to supply variogram parameters for grade interpolation. A strike of 090° was interpreted, with a dip of -80° towards 180°. No plunge was detected with the current data levels. A moderate nugget effect is inherent, with 30% of the total variability. Maximum spatial continuity ranges indicate a range of continuity of up to 200m along-strike and 22m down-dip. Downhole variograms are of reasonable quality and indicate a downhole lode width of up to 5m. Quality of downdip variograms are poor and illustrate the need for infill drilling in this direction.
Block model
A block model of parent cell size 4m (N) x 12.5m (E) x 5m (RL) sub celled to 1m x 6.25m x 2.5m was constructed for the Weerianna deposit. The resource was estimated using ordinary kriging interpolation for all lodes. A minimum of 4 composites and a maximum of 25 composites were used in interpolation of grades into blocks. Search ellipses for initial interpolation of grades comprised 75m x 25m x 10m.
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A second subsequent interpolation pass was employed with expanded search ellipses in order to fill blocks in areas of sparse drill density within the lodes. Lodes were classified as Inferred on the basis of drill hole spacing, sampling, lode geometry, bulk density and confidence in grade continuity.
The JORC Code, 2012, Table 1 Sections 1, 2 and 3 are appended at the end of this announcement.
LOOKING FORWARD
Further exploration at Weeriana will be ranked, reviewed and prioritised in 2019.
For further information on this announcement or the Company generally, please visit our website at www.artemisresources.com.au or contact:
Edward Mead Executive Director Telephone: +61 407 445 351 Wayne Bramwell Chief Executive Officer Telephone: +61 417 953 073 David Tasker Advisor – Chapter One Telephone : +61 433 112 936
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COMPETENT PERSONS STATEMENT
The information in this announcement that relates to the Weerianna Project Mineral Resource is based on on information compiled or reviewed by Mrs Fleur Muller, who is a Member of The Australian Institute of Mining and Metallurgy and a member of the Australian Institute of Geoscientists. Mrs Muller is a consultant working for Geostat Services Pty Ltd who was engaged by Artemis Resources to prepare the report and undertake the resource estimation for the Weerianna Project for the period ending 27 October 2018. Mrs Muller has sufficient experience that is relevant to the style of mineralisation and type of deposit under consideration and to the activity which she is undertaking to qualify as a Competent Person as defined in the 2012 Edition of the ‘Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves’.
Mrs Muller consents to the inclusion in the announcement of the matters based on her information in the form and context in which it appears.
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BACKGROUND INFORMATION ON ARTEMIS RESOURCES
Artemis Resources Limited is an exploration and development company focussed on its large (~2,400 km[2] ) and prospective base, battery and precious metals assets in the Pilbara region of Western Australia. Artemis owns 100% of the 500,000 tpa Radio Hill processing plant and infrastructure, located approximately 35 km south of the city of Karratha.
The Company is evaluating 2004 and 2012 JORC Code compliant resources of gold, nickel, copper-cobalt, PGE’s and zinc, all situated within a 40 km radius of the Radio Hill plant.
Artemis have signed Definitive Agreements with Novo Resources Corp. (“Novo”), which is listed on Canada’s TSX Venture Exchange (TSXV:NVO), and pursuant to the Definitive Agreements, Novo has satisfied its expenditure commitment, and earned 50% of gold (and other minerals necessarily mined with gold) in conglomerate and/or paleoplacer style mineralization in Artemis’ tenements within 100 km of the City of Karratha, including at Purdy’s Reward (“the Gold Rights”). The Gold Rights do not include:
-
(i) gold disclosed in Artemis’ existing (at 18 May 2017) JORC Code Compliant Resources and Reserves; or
-
(ii) gold which is not within conglomerate and/or paleoplacer style mineralization; or
-
(iii) minerals other than gold.
Artemis’ Mt Oscar tenement is excluded from the Definitive Agreements. The Definitive Agreements cover 36 tenements / tenement applications that are 100% owned by Artemis.
Pursuant to Novo’s successful earn-in, two 50:50 joint ventures have been formed between Novo’s subsidiary, Karratha Gold Pty Ltd (“Karratha Gold”) and two subsidiaries of Artemis (KML No 2 Pty Ltd and Fox Radio Hill Pty Ltd). The joint ventures are managed as one by Karratha Gold with Artemis and Novo contributing to further exploration and any mining of the Gold Rights on a 50:50 basis.
FORWARD LOOKING STATEMENTS AND IMPORTANT NOTICE
This report contains forecasts, projections and forward-looking information. Although the Company believes that its expectations, estimates and forecast outcomes are based on reasonable assumptions it can give no assurance that these will be achieved. Expectations, estimates and projections and information provided by the Company are not a guarantee of future performance and involve unknown risks and uncertainties, many of which are out of Artemis’ control.
Actual results and developments will almost certainly differ materially from those expressed or implied. Artemis has not audited or investigated the accuracy or completeness of the information, statements and opinions contained in this announcement. To the maximum extent permitted by applicable laws, Artemis makes no representation and can give no assurance, guarantee or warranty, express or implied, as to, and takes no responsibility and assumes no liability for the authenticity, validity, accuracy, suitability or completeness of, or any errors in or omission from, any information, statement or opinion contained in this report and without prejudice, to the generality of the foregoing, the achievement or accuracy of any forecasts, projections or other forward looking information contained or referred to in this report.
Investors should make and rely upon their own enquiries before deciding to acquire or deal in the Company’s securities.
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APPENDIX 1
WEERIANNA DEPOSIT DRILLHOLE LISTING
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| HOLE-ID | X | Y | Z | DEPTH | AZIMUTH | DIP |
|---|---|---|---|---|---|---|
| WDH001 WDH002 WDH032 WDH103 WDH106 WERC001 WERC002 WERC003 WERC004 WERC005 WERC006 WERC007 WERC008 WERC009 WERC010 WERC011 WERC012 WERC013 WERC014 WERC015 WERC016 WERC017 WERC018 WERC019 WPH1 WPH2 WPH3 WRC001 WRC002 WRC003 WRC004 WRC005 WRC006 WRC007 WRC008 WRC009 WRC010 WRC011 WRC012 WRC013 WRC014 WRC015 WRC016 WRC017 WRC018 WRC019 WRC020 WRC021 WRC022 WRC023 WRC024 WRC025 WRC026 WRC027 WRC028 WRC029 WRC030 WRC031 WRC033 WRC034 |
10916.06 10787.35 10895.00 10850.00 10949.60 10897.45 10846.25 10848.54 10698.15 10700.73 10700.87 10674.72 10675.14 10646.13 10646.55 10597.79 10599.30 10548.82 10549.86 10549.93 10524.36 10524.60 10495.68 10496.09 10750.00 10900.00 10960.00 9798.80 9999.50 10001.80 10200.10 10199.20 10300.10 10300.20 10300.10 10305.60 10301.20 10505.00 10710.30 10700.30 10799.70 10800.40 10800.00 10799.00 10897.00 10899.80 10899.80 10899.80 10893.70 10599.70 11500.20 11000.00 10999.90 11000.00 10999.90 10940.00 10939.70 10954.90 10849.70 10849.90 |
9950.42 10015.53 10080.40 10121.90 10069.80 10004.12 10083.32 10016.38 10083.40 10016.24 10000.13 10082.45 10059.69 10065.35 10049.48 10097.15 10057.91 10108.22 10080.01 10064.61 10108.40 10089.20 10079.46 10060.20 10040.00 9970.00 10000.00 10164.00 10194.40 10017.00 10025.50 10155.00 10099.80 10059.10 10019.90 9874.60 9849.40 10079.40 10049.80 9935.20 9975.90 10211.20 10050.70 10010.90 10059.80 10030.30 10000.30 9970.30 9940.10 10035.80 10165.20 9979.30 9999.10 10019.10 10039.10 10005.30 10019.90 10039.70 9980.90 10000.80 |
32.60 29.49 27.16 25.82 26.07 29.96 26.93 28.89 27.40 29.78 30.86 27.67 28.46 28.67 29.12 27.03 28.34 26.58 27.03 27.48 26.44 26.90 26.93 27.26 30.00 30.00 30.00 25.50 25.14 28.18 29.33 25.73 27.26 27.99 29.75 32.63 33.45 26.94 28.45 34.50 31.19 23.71 28.04 29.60 27.33 28.56 29.78 31.50 33.04 29.13 19.54 27.86 27.03 26.73 26.26 28.84 28.11 27.03 30.45 29.37 |
108.00 78.00 135.00 180.00 141.00 78.00 138.00 84.00 96.00 72.00 108.00 60.00 78.00 60.00 60.00 78.00 90.00 96.00 90.00 114.00 120.00 84.00 60.00 78.00 61.00 70.00 79.00 75.00 33.00 78.00 72.00 75.00 66.00 48.00 48.00 48.00 48.00 48.00 48.00 54.00 65.00 48.00 72.00 78.00 78.00 60.00 60.00 60.00 30.00 42.00 77.00 66.00 60.00 60.00 54.00 66.00 54.00 60.00 60.00 60.00 |
180.00 180.00 180.00 180.00 180.00 2.10 182.10 1.22 183.30 4.20 359.60 3.10 3.50 0.80 359.70 182.40 2.80 181.30 4.60 0.60 182.00 181.00 3.80 2.50 351.00 108.00 153.00 183.00 179.00 358.00 181.00 181.00 180.00 181.00 182.00 179.00 181.00 181.00 1.00 3.00 1.00 1.00 2.00 1.00 181.00 181.00 182.00 182.00 181.00 181.00 58.00 180.00 180.00 180.00 180.00 180.00 180.00 180.00 180.00 180.00 |
-60.00 -60.00 -60.00 -60.00 -60.00 -60.50 -61.10 -60.80 -61.20 -61.30 -61.30 -61.20 -60.30 -60.00 -60.80 -60.00 -60.60 -60.70 -60.50 -75.10 -61.40 -61.90 -60.90 -60.60 -60.00 -60.00 -60.00 -60.00 -60.00 -60.00 -60.00 -60.00 -60.00 -60.00 -60.00 -60.00 -60.00 -60.00 -60.00 -60.00 -60.00 -60.00 -60.00 -60.00 -60.00 -60.00 -60.00 -60.00 -60.00 -60.00 -60.00 -60.00 -60.00 -60.00 -60.00 -60.00 -60.00 -60.00 -60.00 -60.00 |
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| HOLE-ID | X | Y | Z | DEPTH | AZIMUTH | DIP |
|---|---|---|---|---|---|---|
| WRC035 WRC036 WRC037 WRC038 WRC039 WRC040 WRC041 WRC042 WRC043 WRC044 WRC045 WRC046 WRC047 WRC048 WRC049 WRC050 WRC051 WRC052 WRC053 WRC054 WRC055 WRC056 WRC057 WRC058 WRC059 WRC060 WRC061 WRC062 WRC063 WRC064 WRC065 WRC066 WRC067 WRC068 WRC069 WRC070 WRC071 WRC072 WRC073 WRC074 WRC075 WRC076 WRC077 WRC078 WRC079 WRC080 WRC081 WRC082 WRC083 WRC084 WRC085 WRC086 WRC087 WRC088 WRC089 WRC090 WRC091 WRC092 WRC093 WRC094 |
10850.00 10850.10 10850.30 10794.80 10794.80 10794.80 10795.00 10750.00 10750.40 10750.50 10750.80 10794.60 10800.40 11049.50 11049.70 11052.70 11052.10 10925.50 10875.10 10875.30 10825.00 10825.20 10825.30 10825.50 10825.50 10780.10 10777.30 10775.90 10776.20 10725.00 10725.10 10725.10 10698.60 10675.30 10675.30 10675.10 10624.10 10624.60 10198.90 10198.70 10198.60 10399.40 10399.40 10399.20 10399.20 10494.70 10495.10 10495.30 10496.00 10496.20 10699.60 10700.20 10499.20 10502.00 10502.00 10494.20 10548.40 10564.20 10599.40 10599.50 |
10020.70 10040.80 10060.90 10001.60 10020.80 10041.40 10061.30 10001.10 10021.40 10041.70 10061.70 9980.80 10031.20 9979.70 9999.80 10019.90 10039.60 10030.80 10040.20 10060.20 9991.10 10010.80 10031.10 10051.10 10070.80 9991.10 10010.80 10031.20 10050.90 9990.70 10010.50 10026.20 10030.50 10070.90 10050.60 10030.70 10070.80 10050.50 10059.30 10079.00 10099.10 10039.80 10059.70 10079.40 10099.70 10020.30 10039.90 10059.90 10100.40 10120.00 10010.20 9990.40 10049.50 10139.80 10119.30 9982.20 9960.00 9994.00 9899.20 9919.60 |
28.59 28.01 27.51 30.13 29.14 28.40 27.77 29.84 29.47 28.79 28.14 30.95 28.61 25.67 25.06 24.77 24.94 27.90 28.26 27.59 30.40 29.66 28.69 27.90 27.18 30.53 29.72 29.00 28.23 30.88 29.99 29.48 29.15 28.11 28.78 29.52 28.15 28.79 28.11 28.10 27.45 28.11 27.63 27.43 27.26 28.11 27.70 27.21 26.56 26.29 29.97 31.39 27.59 25.96 26.35 28.48 30.28 29.55 34.32 33.37 |
66.00 46.00 60.00 60.00 39.00 60.00 54.00 66.00 44.00 60.00 62.00 60.00 37.00 69.00 60.00 60.00 60.00 57.00 49.00 62.00 60.00 63.00 60.00 60.00 60.00 60.00 60.00 60.00 60.00 60.00 66.00 60.00 60.00 60.00 60.00 60.00 60.00 60.00 59.00 63.00 44.00 44.00 70.00 64.00 58.00 60.00 60.00 60.00 60.00 55.00 60.00 60.00 64.00 48.00 48.00 65.00 50.00 60.00 65.00 60.00 |
180.00 180.00 180.00 180.00 180.00 180.00 180.00 180.00 180.00 180.00 180.00 180.00 360.00 180.00 180.00 180.00 180.00 180.00 180.00 180.00 180.00 180.00 180.00 180.00 180.00 180.00 180.00 360.00 360.00 180.00 180.00 360.00 360.00 360.00 360.00 360.00 360.00 360.00 180.00 180.00 180.00 180.00 180.00 180.00 180.00 180.00 180.00 180.00 180.00 180.00 180.00 180.00 360.00 360.00 360.00 360.00 360.00 360.00 360.00 360.00 |
-60.00 -60.00 -60.00 -60.00 -60.00 -60.00 -60.00 -60.00 -60.00 -60.00 -60.00 -60.00 -60.00 -60.00 -60.00 -60.00 -60.00 -60.00 -60.00 -60.00 -60.00 -60.00 -60.00 -60.00 -60.00 -60.00 -60.00 -60.00 -60.00 -60.00 -60.00 -60.00 -60.00 -60.00 -60.00 -60.00 -60.00 -60.00 -60.00 -60.00 -60.00 -60.00 -60.00 -60.00 -60.00 -60.00 -60.00 -60.00 -60.00 -60.00 -60.00 -60.00 -60.00 -60.00 -60.00 -60.00 -60.00 -60.00 -60.00 -60.00 |
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| HOLE-ID | X | Y | Z | DEPTH | AZIMUTH | DIP |
|---|---|---|---|---|---|---|
| WRC095 | 10148.80 | 10120.00 | 26.09 | 60.00 | 180.00 | -60.00 |
| WRC096 WRC097 WRC098 WRC099 WRC100 WRC101 WRC102 WRC104 WRC105 WRC107 WRC108 WRC109 WRC110 WRC111 WRC112 WRC113 WRC114 WRC115 WRC116 WRC117 WRC118 WRC119 WRC120 WRC121 WRC122 WRC123 WRC124 WRC125 WRC126 WRC127 WRC128 WRC129 WRC130 WRC131 WRC132 WRC133 WRC134 WRC135 WRC136 WRC137 WRC138 WRC139 WRC140 WRC141 WRC142 WRC143 WRC144 WRC145 WRC146 WRC147 |
10198.90 10249.40 10249.70 10299.20 10326.60 10278.00 10800.30 10899.80 10925.30 10899.70 10852.30 10951.70 10951.90 10975.70 10978.10 10850.40 10475.00 10475.20 10523.20 10525.60 10399.80 10356.80 10356.60 10302.50 10198.80 10197.50 10197.00 11540.30 11729.50 11538.60 9754.10 10540.10 10256.20 10154.50 10249.70 10850.00 10550.00 10800.00 10800.00 10752.00 10750.00 10700.00 10700.00 10555.00 10550.00 10500.00 10500.00 10500.00 10502.00 10600.00 |
10120.00 10119.80 10099.60 10119.90 10097.90 10037.50 10091.70 10111.00 10100.20 9935.80 9922.00 9963.10 9982.90 9969.40 9949.60 9941.60 10070.10 10049.80 10069.20 10049.40 9870.30 9880.70 9900.60 9861.70 9849.30 9889.90 9907.50 10137.70 10240.40 10177.50 9625.80 9905.50 9904.00 9891.80 10073.70 10060.00 9930.00 9940.00 9980.00 9940.00 9980.00 9940.00 9980.00 9860.00 10062.00 9860.00 9900.00 9940.00 10020.00 9940.00 |
26.53 26.79 27.19 26.93 27.05 28.96 26.82 25.72 26.00 34.05 34.84 30.56 29.26 29.35 30.61 33.46 27.07 27.56 27.21 27.60 31.41 31.86 30.87 32.81 34.16 33.17 33.24 19.71 18.16 19.60 39.38 30.73 32.07 32.16 27.74 29.00 30.50 32.50 31.00 29.50 29.50 34.50 31.50 31.50 27.50 29.50 29.50 29.00 28.00 29.00 |
65.00 65.00 65.00 50.00 65.00 65.00 60.00 60.00 64.00 60.00 60.00 65.00 60.00 65.00 65.00 60.00 65.00 60.00 60.00 65.00 60.00 60.00 60.00 60.00 60.00 60.00 60.00 60.00 60.00 60.00 60.00 60.00 60.00 60.00 56.00 119.00 120.00 120.00 120.00 119.00 120.00 120.00 120.00 144.00 80.00 101.00 80.00 80.00 120.00 120.00 |
180.00 180.00 180.00 180.00 180.00 180.00 180.00 180.00 180.00 180.00 180.00 180.00 180.00 180.00 180.00 180.00 360.00 360.00 360.00 360.00 180.00 180.00 180.00 180.00 180.00 180.00 180.00 353.00 360.00 360.00 360.00 360.00 180.00 180.00 180.00 180.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 1.00 358.00 358.00 358.00 0.00 0.00 |
-60.00 -60.00 -60.00 -60.00 -60.00 -60.00 -60.00 -60.00 -60.00 -60.00 -60.00 -60.00 -60.00 -60.00 -60.00 -60.00 -60.00 -60.00 -60.00 -60.00 -60.00 -60.00 -60.00 -60.00 -60.00 -60.00 -60.00 -60.00 -60.00 -60.00 -60.00 -60.00 -60.00 -60.00 -60.00 -60.00 -60.00 -60.00 -60.00 -60.00 -60.00 -60.00 -60.00 -60.00 -60.00 -60.00 -60.00 -60.00 -60.00 -60.00 |
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APPENDIX 2
WEERIANNA DEPOSIT DOWNHOLE SURVEYS
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| HOLE | DISTANCE | GRID AZIMUTH | DIP | METHOD |
|---|---|---|---|---|
| WERC001 WERC001 WERC001 WERC001 WERC002 WERC002 WERC002 WERC002 WERC002 WERC002 WERC003 WERC003 WERC003 WERC003 WERC004 |
0 30 60 72 0 30 60 90 120 132 0 30 60 78 0 |
2.1 2.2 2.9 4 182.1 181.2 182.4 183.5 184.6 184.9 1.22 2.19 0.45 2.43 183.3 |
-60.5 -59.5 -57.9 -57.1 -61.1 -60.8 -60.9 -61.1 -62.4 -62.1 -60.8 -60.5 -59.3 -57.6 -61.2 |
Gyroscope Gyroscope Gyroscope Gyroscope Gyroscope Gyroscope Gyroscope Gyroscope Gyroscope Gyroscope Gyroscope Gyroscope Gyroscope Gyroscope Gyroscope |
| WERC004 WERC004 WERC004 WERC005 WERC005 WERC005 WERC006 WERC006 WERC006 WERC006 WERC006 WERC007 WERC007 WERC007 WERC008 WERC008 WERC008 WERC008 WERC009 WERC009 WERC009 WERC010 WERC010 WERC010 WERC011 WERC011 WERC011 WERC011 WERC012 WERC012 WERC012 WERC012 WERC013 WERC013 WERC013 WERC013 WERC014 WERC014 WERC014 WERC014 WERC015 WERC015 WERC015 WERC015 |
30 60 90 0 30 60 0 30 60 90 102 0 30 54 0 30 60 72 0 30 54 0 30 54 0 30 60 72 0 30 60 90 0 30 60 90 0 30 60 90 0 30 60 90 |
185.1 184.8 185.1 4.2 3.1 2.3 359.6 1.4 359.7 3 1.7 3.1 2.5 5 3.5 4.3 4.8 4.8 0.8 0.8 0.5 359.7 0.8 359.7 182.4 182.7 183 184.4 2.8 3.1 2.9 3 181.3 181.7 182.1 184.1 4.6 3.8 4.6 5.5 0.6 1.3 1.5 5.9 |
-61.3 -62.8 -62.8 -61.3 -61.2 -62 -61.3 -61 -61.4 -61.3 -61.7 -61.2 -60.4 -59.3 -60.3 -58.9 -57.4 -56.7 -60 -58.5 -57.5 -60.8 -69.5 -57.7 -60 -58.9 -57.6 -56.4 -60.6 -59.4 -59.5 -57.2 -60.7 -59.8 -60.3 -60.4 -60.5 -59.4 -58.9 -58.5 -75.1 -74.5 -73.7 -73.4 |
Gyroscope Gyroscope Gyroscope Gyroscope Gyroscope Gyroscope Gyroscope Gyroscope Gyroscope Gyroscope Gyroscope Gyroscope Gyroscope Gyroscope Gyroscope Gyroscope Gyroscope Gyroscope Gyroscope Gyroscope Gyroscope Gyroscope Gyroscope Gyroscope Gyroscope Gyroscope Gyroscope Gyroscope Gyroscope Gyroscope Gyroscope Gyroscope Gyroscope Gyroscope Gyroscope Gyroscope Gyroscope Gyroscope Gyroscope Gyroscope Gyroscope Gyroscope Gyroscope Gyroscope |
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| HOLE | DISTANCE | GRID AZIMUTH | DIP | METHOD |
|---|---|---|---|---|
| WERC015 WERC016 WERC016 WERC016 WERC016 WERC016 WERC017 WERC017 WERC017 WERC018 WERC018 WERC018 WERC019 WERC019 WERC019 WERC019 |
108 0 30 60 90 120 0 30 60 0 30 60 0 30 60 78 |
7.4 182 182.1 184.5 185 188 181 182 183.4 3.8 4.2 4.6 2.5 3.3 3.4 3 |
-73.5 -61.4 -60.8 -60.7 -60.4 -60 -61.9 -61.3 -61.9 -60.9 -60.5 -59.9 -60.6 -60.1 -59.5 -58.6 |
Gyroscope Gyroscope Gyroscope Gyroscope Gyroscope Gyroscope Gyroscope Gyroscope Gyroscope Gyroscope Gyroscope Gyroscope Gyroscope Gyroscope Gyroscope Gyroscope |
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APPENDIX 3
WEERIANNA DEPOSIT JORC TABLE 1
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APPENDIX
JORC Code, 2012 Edition – Table 1: Weerianna
Section 1 Sampling Techniques and Data
(Criteria in this section apply to all succeeding sections.)
| Criteria | JORC Code explanation | JORC Code explanation | Commentary | Commentary |
|---|---|---|---|---|
| Sampling | • | Nature and quality of sampling (e.g. cut | • | Reverse circulation drilling was used to |
| techniques | channels, random chips, or specific | obtain 1m drill chip samples from which a | ||
| specialised industry standard | sample was collected for submission to | |||
| measurement tools appropriate to the | the laboratory for analysis. Diamond | |||
| minerals under investigation, such as down | drillholes were sampled at 1m intervals | |||
| hole gamma sondes, or handheld XRF | and half core splits sent to the laboratory. | |||
| instruments, etc). These examples should | • | Samples from each RC interval were | ||
| not be taken as limiting the broad meaning | collected in a cyclone and split using a 3- | |||
| of sampling. | level riffle splitter. Wet samples were | |||
| • | Include reference to measures taken to | grab sampled for assay and the residual | ||
| ensure sample representivity and the | sample left to dry for later resampling if | |||
| appropriate calibration of any | gold values were returned in the initial | |||
| measurement tools or systems used. | grab sample. | |||
| • | Aspects of the determination of | • | For 2018 RC drilling, (drillholes | |
| mineralisation that are Material to the | WERC001- WERC019) 1m samples | |||
| Public Report. | were collected for each metre drilled via a | |||
| • | In cases where ‘industry standard’ work | rig mounted cyclone/cone splitter | ||
| has been done this would be relatively | combination. | |||
| simple (e.g. ‘reverse circulation drilling was | • |
Several drill campaigns were conducted | ||
| used to obtain 1 m samples from which 3 | and samples submitted under different | |||
| kg was pulverised to produce a 30 g | conditions: | |||
| charge for fire assay’). In other cases, | • WRC001-WRC024: Composite |
|||
| more explanation may be required, such as | samples over 4m were submitted | |||
| where there is coarse gold that has | for Au (20gm AAS) at SGS | |||
| inherent sampling problems. Unusual | Laboratories, Perth. Anomalous 4m | |||
| commodities or mineralisation types (e.g. | composite samples were then re- | |||
| submarine nodules) may warrant | run by fire assay of the individual | |||
| disclosure of detailed information. | 1m samples. | |||
| • WRC025-WRC046 had 1m samples |
||||
| sent to SGS Labs for analysis by | ||||
| AAS determination on 20gm | ||||
| samples after aqua regia digestion. | ||||
| Samples > 0.5 g/t Au were repeated | ||||
| by fire assay using a 50gm sample. | ||||
| • WRC047-WRC086 were subject to |
||||
| a similar laboratory analysis as | ||||
| above, with initial AAS | ||||
| determination after aqua regia | ||||
| digestion, followed by fire assay | ||||
| analysis on samples >0.5 g/t Au. | ||||
| Samples returning >5 g/t Au were | ||||
| re-checked by fire assay using a re- | ||||
| split from the original coarse | ||||
| residue. | ||||
| • WRC087-WRC132 had 1m samples |
||||
| sent to AAL for analysis by 50gm | ||||
| fire assay. | ||||
| • Analysis procedure for WRC133- |
||||
| WRC147 is not detailed in technical | ||||
| reports, however, it is believed that | ||||
| 1m samples were submitted for | ||||
| 50gm fire assay. | ||||
| • WERC001-WERC019 had 1m |
||||
| samples sent to ALS Perth | ||||
| laboratory for analysis by ICP and | ||||
| fire assay: | ||||
o33 element ICP AES, 4 |
||||
| acid digest,method code |
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| Criteria | JORC Code explanation | JORC Code explanation | Commentary | Commentary |
|---|---|---|---|---|
| ME-ICP61, various lower | ||||
| detection limits | ||||
oOre grade elements ICP |
||||
| AES, 4 acid digest method | ||||
| code ME-OG62, various | ||||
| lower detection limits | ||||
oOre grade As , ICP AES |
||||
| four acid digest method | ||||
| code As-OG62, 0.01% | ||||
| lower detection limit | ||||
oOre grade Au, 50g fire |
||||
| assay with AAS finish, | ||||
| method code Au-AA26, | ||||
| 0.01ppm lower detection | ||||
| limit. | ||||
| Drilling | • | Drill type (e.g. core, reverse circulation, | • | According to historical annual reports, RC |
| techniques | open-hole hammer, rotary air blast, auger, | drilling utilised a nominal 4½ inch | ||
| Bangka, sonic, etc) and details (e.g. core | diameter face-sampling hammer. | |||
| diameter, triple or standard tube, depth of | • | For the drilling campaign conducted in | ||
| diamond tails, face-sampling bit or other | 2018, RC drilling utilised a 5.25-inch | |||
| type, whether core is oriented and if so, by | diameter drill bit for down-the-hole | |||
| what method, etc). | hammer drilling. | |||
| • | Diamond drillholes were drilled using the | |||
| HQ triple tubemethod. | ||||
| Drill sample | • |
Method of recording and assessing core | • | Recoveries for diamond holes (DDH) |
| recovery | and chip sample recoveries and results | were recorded by the geologist in the | ||
| assessed. | field at the time of drilling/logging. | |||
| • | Measures taken to maximise sample | • | Recoveries for diamond holes are | |
| recovery & ensure representative nature of | variable but generally poor. | |||
| the samples. | • | As only 5 diamond holes were drilled, | ||
| • | Whether a relationship exists between | analysis was not conducted to determine | ||
| sample recovery and grade and whether | any relationships between sample | |||
| sample bias may have occurred due to | recovery and grade. | |||
| preferential loss/gain of fine/coarse | ||||
| material. | ||||
| Logging | • | Whether core and chip samples have been | • |
Systematic logging describes the drill |
| geologically and geotechnically logged to a | hole lithology and quartz veining to a | |||
| level of detail to support appropriate | level of detail to support appropriate | |||
| Mineral Resource estimation, mining | Mineral Resource estimation. | |||
| studies and metallurgical studies. | • | Qualitative logging of samples included | ||
| • | Whether logging is qualitative or | (but was not limited to) lithology, | ||
| quantitative in nature. Core (or costean, | mineralogy, veining and weathering. | |||
| channel, etc) photography. | • | Geological logging is qualitative in nature, | ||
| • | The total length and percentage of the | quantitative logging is not available. | ||
| relevant intersections logged. | • | Every metre (100%) of RC and DD | ||
| drilling was geologically logged and | ||||
| sampled. | ||||
| Sub- | • | If core, whether cut or sawn and whether | • | Details of core sampling have not yet |
| sampling | quarter, half or all core taken. | been found in historical | ||
| techniques | • | If non-core, whether riffled, tube sampled, | • | All pre-2018 RC samples were collected |
| and sample | rotary split, etc and whether sampled wet | in a cyclone and split using a 3-level riffle | ||
| preparation | or dry. | splitter to maximise and maintain a | ||
| • | For all sample types, the nature, quality | consistent and representative sample. | ||
| and appropriateness of the sample | The majority of samples were dry. Wet | |||
| preparation technique. | RC samples were grab sampled. | |||
| • | Quality control procedures adopted for all | • | 2018 RC sampling 1m samples were | |
| sub-sampling stages to maximise | collected from a cone splitter attached to | |||
| representivity of samples. | a cyclone yielding a sample of 2-4kg, | |||
| • | Measures taken to ensure that the | • | RC sampling methods were to industry | |
| sampling is representative of the in-situ | standard and appear appropriate for the | |||
| material collected, including for instance | style of mineralisation. | |||
| results for field duplicate/second-half | • | Limited field duplicates and coarse | ||
| sampling. | residue resplits were collected and | |||
| • | Whether sample sizes are appropriate to | analysed. | ||
| the grain size of the material being | • | A sample size of 2-4kg was collected and | ||
| sampled. | considered appropriate and | |||
| representativeforthe grainsize and style |
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| Criteria | JORC Code explanation | JORC Code explanation | Commentary | Commentary |
|---|---|---|---|---|
| of mineralisation | ||||
| Quality of | • | The nature, quality and appropriateness of | • | Samples dried, jaw and roll crushed, |
| assay data | the assaying and laboratory procedures | split and pulverised in a steel mill. | ||
| and | used and whether the technique is | Assays from earlier RC holes analysed | ||
| laboratory | considered partial or total. | by AAS determination on 20gm sample | ||
| tests | • | For geophysical tools, spectrometers, | after aqua regia digestion. Samples | |
| handheld XRF instruments, etc, the | >0.5g/t Au repeated by fire assay on 50g | |||
| parameters used in determining the | charge. Assays from later RC holes | |||
| analysis including instrument make and | were determined by 50g fire assay. | |||
| model, reading times, calibrations factors | • | Assay and lab techniques were industry | ||
| applied and their derivation, etc. | standard at the time of collection and | |||
| • | Nature of quality control procedures | appropriate for the style of | ||
| adopted (e.g. standards, blanks, | mineralisation. | |||
| duplicates, external laboratory checks) and | • | No geophysical or hand-held tools were | ||
| whether acceptable levels of accuracy (i.e. | reported as being utilised for the drilling | |||
| lack of bias) and precision have been | programs in question. | |||
| established. | • | Limited historical field duplicates and | ||
| coarse residue resplits were collected | ||||
| and analysed. | ||||
| • | For the 2018 drilling campaign, | |||
| reference standards and blanks were | ||||
| inserted by Artemis at a rate of 1 in 20 | ||||
| samples and submitted to ALS Perth | ||||
| laboratory. Assay results of these | ||||
| standards and blanks give confidence in | ||||
| the accuracy and precision of assay data | ||||
| returned from ALS Perth laboratory. | ||||
| • | For the 2018 drilling program, field | |||
| duplicates were also collected every 20th | ||||
| sample and submitted to ALS Perth | ||||
| laboratory. Results are within | ||||
| acceptable limits. Field duplicates were | ||||
| collected directly from the cone splitter | ||||
| fitted to the drill rig | ||||
| Verification | • | The verification of significant intersections | • | A very small number of coarse residue |
| of sampling | by either independent or alternative | samples (40) were submitted to an | ||
| and | company personnel. | umpire laboratory for independent | ||
| assaying | • | The use of twinned holes. | analysis. The dataset was considered | |
| • | Documentation of primary data, data entry | too small for meaningful conclusions to | ||
| procedures, data verification, data storage | be derived. | |||
| (physical and electronic) protocols. | • | No twinning of holes has been conducted | ||
| • | Discuss any adjustment to assay data. | to date, according to historical reports. | ||
| • | Limited verification was performed by | |||
| Geostat Services at the time of resource | ||||
| estimation in 2009. | ||||
| • | No adjustments of assay data have yet | |||
| beendiscoveredin historical reports. | ||||
| Location of | • | Accuracy and quality of surveys used to | • | Historical drilling was performed prior to |
| data points | locate drill holes (collar and down-hole | 2000 and as such, hole locations were | ||
| surveys), trenches, mine workings and | surveyed by local contract surveyors, and | |||
| other locations used in Mineral Resource | assumed to be accurate. | |||
| estimation. | • | Downhole surveys using camera in rods | ||
| • | Specification of the grid system used. | for RC holes WRC133-146. Downhole | ||
| • | Quality and adequacy of topographic | surveys using Eastman camera for 4 | ||
| control. | diamond holes WDH002, 032, 103, 106. | |||
| • | Downhole surveys using a gyroscopic | |||
| instrument (tool #EG0150 supplied by | ||||
| Topdrill, operated by ARV personnel) for | ||||
| holes WERC001-WERC019. A north- | ||||
| seeking gyroscope was used, eliminating | ||||
| the risk of magnetic interference. | ||||
| • | Grid system used is MGA 94 (Zone 50), | |||
| with conversion of coordinates to a local | ||||
| grid for resource estimation and planning. | ||||
| • | Topography surface generated from | |||
| surveyed drill collars. |
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| Criteria | JORC Code explanation | JORC Code explanation | Commentary | Commentary |
|---|---|---|---|---|
| Data | • | Data spacing for reporting of Exploration | • | Holes drilled on a total of 18 drill sections |
| spacing and | Results. | with an average 25m spacing along-strike | ||
| distribution | • | Whether the data spacing and distribution | and 20m across-strike. | |
| is sufficient to establish the degree of | • | Data spacing is considered sufficient for | ||
| geological and grade continuity appropriate | the establishment and classification of an | |||
| for the Mineral Resource and Ore Reserve | Inferred resource with respect to this | |||
| estimation procedure(s) and classifications | style of mineralisation. | |||
| applied. | • | WRC001-WRC024: Composite 4m | ||
| • | Whether sample compositing has been | samples were submitted for analysis. | ||
| applied. | Anomalous 4m composite samples were | |||
| then re-run by fire assay of the individual | ||||
| 1m samples. All later RC holes were not | ||||
| composited and were sampled at 1m | ||||
| intervals. | ||||
| Orientation | • | Whether the orientation of sampling | • | Most drill holes are planned to intersect |
| of data in | achieves unbiased sampling of possible | the interpreted mineralised | ||
| relation to | structures and the extent to which this is | structures/lodes as close to a | ||
| geological | known, considering the deposit type. | perpendicular angle as possible (subject | ||
| structure | • | If the relationship between the drilling | to physical access). | |
| orientation and the orientation of key | • | Drilling orientation and subsequent | ||
| mineralised structures is considered to | sampling is unbiased in its representation | |||
| have introduced a sampling bias, this | of reported material. | |||
| should be assessed and reported if | ||||
| material. | ||||
| Sample | • | The measures taken to ensure sample | • | As the historical drilling was undertaken |
| security | security. | from 1986-1996, detailed documentation | ||
| of chain of custody was not widespread | ||||
| industry standard at that time. | ||||
| • | For 2018 drilling, calico sample bags were | |||
| placed in polyweave sacks, up to 5 bags | ||||
| per sack. Sacks from individual holes were | ||||
| placed into bulk bags, with each bulk bag | ||||
| labelled with: | ||||
oArtemis Resources Ltd |
||||
oAddress of laboratory |
||||
oSample range |
||||
| • | Samples were delivered on pallets by | |||
| Artemis personnel to the transport | ||||
| company in Karratha. | ||||
| • | The transport company then delivered | |||
| the samples directly to ALS Perth | ||||
| Laboratory. | ||||
| Audits or | • | The results of any audits or reviews of | • | Comparisons were made between aqua |
| reviews | sampling techniques and data. | regia and fire assay (repeat) methods on | ||
| WRC025 to WRC086 to assess reliability. | ||||
| It was considered that fire assays are | ||||
| reliable and should replace aqua regia | ||||
| assays for resource modelling and other | ||||
| applications. | ||||
| • | Comparison of 628 repeats with original | |||
| samples show a close and acceptable | ||||
| reconciliation. | ||||
| • | It is acknowledged that there could be | |||
| variability imposed by the use of three | ||||
| different laboratories over the various | ||||
| programs and minor variations in | ||||
| sampling, preparation and analysis | ||||
| methods. |
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Section 2 Reporting of Exploration Results
| (Criterialistedinthe | (Criterialistedinthe | (Criterialistedinthe | preceding sectionalso apply to this section.) | ||
|---|---|---|---|---|---|
| Criteria | JORC Code explanation | Commentary | |||
| Mineral | • | Type, reference name/number, location and | • |
M47/223 is 100% held by Western Metals | |
| tenement | ownership including agreements or material | Pty Ltd, an entity in which Artemis has an | |||
| and land | issues with third parties such as joint | 80% interest (via its wholly owned | |||
| tenure | ventures, partnerships, overriding royalties, | subsidiary, Karratha Metals Pty Ltd). | |||
| status | native title interests, historical sites, | ||||
| wilderness or national park and | • | The tenement is in good standing and | |||
| environmental settings. | no known impediments exist (see map | ||||
| • | The security of the tenure held at the time | elsewhere in this report for location). | |||
| of reporting along with any known | |||||
| impediments to obtaining a licence to | |||||
| _operate inthe area. _ | |||||
| Exploration | • | Acknowledgment and appraisal of | • | Noranda drilled three percussion holes | |
| done by | exploration by other parties. | (WPH1-3) in the period 1978-1985. | |||
| other parties | Between 1986 and 1988, a large RC | ||||
| drilling campaign involving 132 RC | |||||
| holes (WRC01-132) was completed. | |||||
| Five diamond drillholes were also drilled | |||||
| using HQ triple tube for a total of 462m. | |||||
| In 1988 Noranda became Pioneer | |||||
| Minerals, then Plutonic Gold in 1990; | |||||
| which was subsequently taken over in | |||||
| 1998 by Homestake Gold Mining. | |||||
| • | In 1990, Homestake completed a | ||||
| preliminary sectional resource estimate | |||||
| of 238,300t @ 3.49g/t Au, using a 1g/t | |||||
| Au lower cut-off and a specific gravity of | |||||
| 2.0 down to a depth of 50-60m. This | |||||
| was followed by a further 15 RC | |||||
| drillholes (WRC133-147) drilled in | |||||
| 1996/97 to test the depth and strike | |||||
| extent oftheknown mineralisation. | |||||
| Geology | • | Deposit type, geological setting and style of | • |
The geological setting of the Weerianna | |
| mineralisation. | gold deposit is within a chert-ultramafic | ||||
| schist sequence between two basaltic | |||||
| terrains. The deposit lies on the | |||||
| overturned eastern limb of an east- | |||||
| northeast trending syncline, located | |||||
| northwest of the main regional anticlinal | |||||
| structure. Mineralisation at Weerianna | |||||
| is associated with quartz veins within | |||||
| chlorite-serpentinite schists with | |||||
| variable degrees of silicification and | |||||
| carbonate alteration. Quartz veining is | |||||
| controlled by the schistosity, which | |||||
| forms parallel to the bedding orientation | |||||
| ofthehostrocks. | |||||
| Drill hole | • | A summary of all information material to the | • |
Drill hole collar and downhole survey | |
| Information | understanding of the exploration results | details are listed in the attachment. It is | |||
| including a tabulation of the following | impractical to list all drill hole intercepts | ||||
| information for all Material drill holes: | used in the resource estimate. | ||||
o easting and northing of the drill hole |
• | Details are provided in local grid co- | |||
| collar | ordinates. The historic drilling was | ||||
o elevation or RL (Reduced Level – |
drilled on a local grid established | ||||
| elevation above sea level in metres) of | between 1978 and 1985 with local north | ||||
| the drill hole collar | 28W of magnetic North. In 2006 the drill | ||||
o dip and azimuth of the hole |
hole database was updated to provide | ||||
o down hole length and interception depth |
collar coordinates for AGD94 datum | ||||
o hole length. |
map zone MGA94 Zone 50. | ||||
| • | If the exclusion of this information is | ||||
| justified on the basis that the information is | |||||
| not Material and this exclusion does not | |||||
| detract from the understanding of the | |||||
| report, the Competent Person should | |||||
| _clearly explain why this is the case. _ |
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| Criteria | JORC Code explanation | JORC Code explanation | Commentary | Commentary |
|---|---|---|---|---|
| Data | • | In reporting Exploration Results, weighting | • | No exploration results are reported in |
| aggregation | averaging techniques, maximum and/or | this announcement. | ||
| methods | minimum grade truncations (e.g. cutting of | • | Exploration results have been reported | |
| high grades) and cut-off grades are usually | previously in historical annual reports as | |||
| Material and should be stated. | length-weighted averages. An example | |||
| • | Where aggregate intercepts incorporate | would be from WRC-17 as follows: | ||
| short lengths of high-grade results and | From (m) To (m) Au_Ave |
|||
| • | longer lengths of low-grade results, the procedure used for such aggregation should be stated and some typical examples of such aggregations should be shown in detail. The assumptions used for any reporting of metal equivalent values should be clearly |
47 48 9 48 49 4.805 49 50 1.46 50 51 1.07 Weighted average= ((1x9)+(1x4.805)+(1x1.46)+(1x1.07))/(1+1+ 1+1) =4m at 4.09 g/t Au |
||
| stated. | • | No metal equivalents are used for | ||
| reporting. | ||||
| Relationship | • |
These relationships are particularly | • | Specific exploration results and |
| between | important in the reporting of Exploration | intercept lengths are not provided in this | ||
| mineralisati | Results. | release. | ||
| on widths | • | If the geometry of the mineralisation with | • | Where possible, drillholes were aligned |
| and | respect to the drill hole angle is known, its | to intersect the mineralisation as close | ||
| intercept | nature should be reported. | to perpendicular as possible, thus | ||
| lengths | • | If it is not known and only the down hole | reflecting close to true width. | |
| lengths are reported, there should be a | ||||
| clear statement to this effect (e.g. ‘down | ||||
| _hole length, true width not known’). _ | ||||
| Diagrams | • | Appropriate maps and sections (with | • | A plan view of drill hole collar locations |
| scales) and tabulations of intercepts should | and schematic cross section are shown | |||
| be included for any significant discovery | below. | |||
| being reported These should include, but | ||||
| not be limited to a plan view of drill hole | ||||
| collar locations and appropriate sectional | ||||
| views. | ||||
| • | Where comprehensive reporting of all | |||
| Exploration Results is not practicable, | ||||
| representative reporting of both low and | ||||
| high grades and/or widths should be | ||||
| practiced to avoid misleading reporting of | ||||
| Exploration Results. |
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| Criteria | JORC Code explanation | JORC Code explanation | Commentary | Commentary |
|---|---|---|---|---|
| Balanced | • | It is not practical to report all exploration | ||
| reporting | results. | |||
| • | Exploration results of all drilling have | |||
| been reported in historical annual | ||||
| reports where the length-weighted | ||||
| average has exceeded 1g/t Au. Holes | ||||
| where no significant assays have been | ||||
| returnedhave also been reported. | ||||
| Other | • | Other exploration data, if meaningful and | • | No other significant exploration work |
| substantive | material, should be reported including (but | has been done by Artemis or Western | ||
| exploration | not limited to): geological observations; | Metals Pty Ltd to date. | ||
| data | geophysical survey results; geochemical | |||
| survey results; bulk samples – size and | ||||
| method of treatment; metallurgical test | ||||
| results; bulk density, groundwater, | ||||
| geotechnical and rock characteristics; | ||||
| potential deleterious or contaminating | ||||
| substances. | ||||
| Further work | • |
The nature and scale of planned further | • | Artemis will consider various scenarios |
| work (e.g. tests for lateral extensions, depth | aimed at assessing the need for | |||
| extensions or large-scale step-out drilling). | additional drilling or other activity. | |||
| • | Diagrams clearly highlighting the areas of | • | The resource is open at depth, and also | |
| possible extensions, including the main | between the respective mineralisation | |||
| geological interpretations and future drilling | zones. Diagrams will be provided | |||
| areas, provided this information is not | dependent on a positive assessment of | |||
| commercially sensitive. | the need for additional drilling or other | |||
| activity. |
Section 3 Estimation and Reporting of Mineral Resources
(Criteria listed in section 1, and where relevant in section 2, also apply to this section.)
| Criteria | JORC Code explanation | JORC Code explanation | Commentary | Commentary |
|---|---|---|---|---|
| Database | • | Measures taken to ensure that data has | • | Excel files were supplied to Geostat |
| integrity | not been corrupted by, for example, | Services “Geostat” for use in the 2018 | ||
| transcription or keying errors, between its | resource estimate. | |||
| initial collection and its use for Mineral | • | Data validation steps included, but were | ||
| Resource estimation purposes. | not limited to the following: | |||
| • | Data validation procedures used. | - Validation through database |
||
| constraints e.g. | ||||
| overlapping/missing intervals, | ||||
| intervals exceeding maximum | ||||
| depth, missing assays. | ||||
| - Validation through 3D |
||||
| visualisation in 3D software to | ||||
| check for any obvious collar, | ||||
| downhole survey, or assay | ||||
| import errors. | ||||
| Site visits | • | Comment on any site visits undertaken by | • | No site visits were undertaken by |
| the Competent Person and the outcome of | Geostat, as this estimate was originally | |||
| those visits. | undertaken for a private company. | |||
| • | If no site visits have been undertaken | |||
| _indicate why this is the case. _ | ||||
| Geological | • | Confidence in (or conversely, the | • | The confidence in the geological |
| interpretatio | uncertainty of ) the geological interpretation | interpretation is considered to be | ||
| n | of the mineral deposit. | relatively good. | ||
| • | Nature of the data used and of any | • | Detailed geological logging and surface | |
| assumptions made. | mapping allow extrapolations of | |||
| • | The effect, if any, of alternative | mineralisation intersections from section | ||
| interpretations on Mineral Resource | to section. | |||
| estimation. | • | The Mineral Resource is well-defined | ||
| • | The use of geology in guiding and | from existing drillholes, and as such, | ||
| controlling Mineral Resource estimation. | alternative interpretations will result in | |||
| • | The factors affecting continuity both of | similar tonnage and grade. | ||
| grade and geology. | • | Geological boundaries generally | ||
| correspondwell withthe spatial locations |
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| Criteria | JORC Code explanation | JORC Code explanation | Commentary | Commentary |
|---|---|---|---|---|
| of the mineralisation. | ||||
| • | Quartz vein zones associated with | |||
| schistosity are interpreted to be the key | ||||
| factors affectingmineralisation continuity. | ||||
| Dimensions | • | The extent and variability of the Mineral | • | Four mineralisation zones comprise the |
| Resource expressed as length (along strike | deposit with an overall E-W trend and | |||
| or otherwise), plan width, and depth below | steep dip of approximately -80° towards | |||
| surface to the upper and lower limits of the | grid south. | |||
| Mineral Resource. | • | The combined mineralisation zones | ||
| extend over 600m along strike, with | ||||
| maximum down-dipextent of 120m. | ||||
| Estimation | • | The nature and appropriateness of the | • | The Mineral Resource was estimated |
| and | estimation technique(s) applied and key | using ordinary kriging (OK) interpolation | ||
| modelling | assumptions, including treatment of | in Surpac mining software. | ||
| techniques | extreme grade values, domaining, | • | Four distinct mineralisation zones | |
| interpolation parameters and maximum | comprise the deposit with an overall E-W | |||
| distance of extrapolation from data points. | trend and steep dip of approximately -80° | |||
| If a computer assisted estimation method | towards grid south. 18 wireframes were | |||
| was chosen include a description of | delineated from sectional outlines to | |||
| computer software and parameters used. | represent all mineralisation within these | |||
| • | The availability of check estimates, | zones. Each wireframe was treated as a | ||
| previous estimates and/or mine production | separate interpolation domain, with | |||
| records and whether the Mineral Resource | interpolation of grades limited to blocks | |||
| estimate takes appropriate account of such | within each domain (wireframe). | |||
| data. | • | A top-cut of either 10 or 20 g/t Au was | ||
| • | The assumptions made regarding recovery | applied to selected lodes where the | ||
| of by-products. | coefficient of variation was high and/or | |||
| • | Estimation of deleterious elements or other | there was a large variance present. | ||
| non-grade variables of economic | • | A minimum of 4 composites and a | ||
| significance (e.g. sulphur for acid mine | maximum of 25 composites were used in | |||
| drainage characterisation). | interpolation of grades into blocks. | |||
| • | In the case of block model interpolation, | • | A block model of parent cell size 4m (N) x | |
| the block size in relation to the average | 12.5m (E) x 5m (RL) sub-celled to 1m x | |||
| sample spacing and the search employed. | 6.25m x 2.5m was used for resource | |||
| • | Any assumptions behind modelling of | estimation. | ||
| selective mining units. | • | Search ellipses for initial interpolation of | ||
| • | Any assumptions about correlation | grades comprised 75m x 25m x 10m. A | ||
| between variables. | second subsequent interpolation pass | |||
| • | Description of how the geological | was employed with expanded search | ||
| interpretation was used to control the | ellipses in order to fill blocks in areas of | |||
| resource estimates. | sparse drill density within the lodes. | |||
| • | Discussion of basis for using or not using | • | 2 earlier non-JORC compliant resource | |
| grade cutting or capping. | estimates were available for comparison, | |||
| • | The process of validation, the checking process used, the comparison of model data to drill hole data, and use of |
albeit with smaller datasets and were consistent given the drilling at the time in comparison with the current Geostat |
||
| reconciliation data if available. | estimate. | |||
| • | No assumptions have been made | |||
| regarding recovery of by-products. | ||||
| • | No estimation of any deleterious | |||
| elements has been made. | ||||
| • | A combination of assays and lithology | |||
| were used to define the wireframe | ||||
| envelopes, with a cut-off of approximately | ||||
| 0.5 g/t Au to separate mineralisation from | ||||
| waste. | ||||
| • | The resource estimate was validated by | |||
| visual validations on screen, global | ||||
| statistical comparisons of input composite | ||||
| grades and block grades, and local | ||||
| grade/depthgraphical relationships. | ||||
| Moisture | • | Whether the tonnages are estimated on a | • | Tonnages are estimated on a wet basis. |
| dry basis or with natural moisture, and the | ||||
| method of determination of the moisture | ||||
| _content. _ | ||||
| Cut-off | • | The basis of the adopted cut-off grade(s) or | • |
A nominal cut-off of 1.0g/t Au |
| parameters | quality parameters applied. | corresponds with the visual |
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| Criteria | JORC Code explanation | JORC Code explanation | Commentary | Commentary |
|---|---|---|---|---|
| mineralisation as determined by quartz | ||||
| veining within schistosity and effectively | ||||
| maps the mineralised zones. This cut-off | ||||
| was also chosen to reflect reasonable | ||||
| prospect for economic extraction at the | ||||
| appropriate grade population. | ||||
| Mining | • | Assumptions made regarding possible | • | The mining scenario of the deposit as |
| factors or | mining methods, minimum mining | shown to be economically viable would | ||
| assumptions | dimensions and internal (or, if applicable, | likely be a small open pit. Geostat has | ||
| external) mining dilution. It is always | not fully assessed the potential mining | |||
| necessary as part of the process of | parameters. Further studies are planned | |||
| determining reasonable prospects for | to address possible mining scenarios | |||
| eventual economic extraction to consider | given current economic factors. | |||
| potential mining methods, but the | ||||
| assumptions made regarding mining | ||||
| methods and parameters when estimating | ||||
| Mineral Resources may not always be | ||||
| rigorous. Where this is the case, this | ||||
| should be reported with an explanation of | ||||
| _the basis of the mining assumptions made. _ | ||||
| Metallurgical | • |
The basis for assumptions or predictions | • | Geostat is not aware of specific |
| factors or | regarding metallurgical amenability. It is | metallurgical test work to date at | ||
| assumptions | always necessary as part of the process of | Weerianna. | ||
| determining reasonable prospects for | • | It is thought that simple CIL/CIP gold | ||
| eventual economic extraction to consider | recovery methods may be appropriate | |||
| potential metallurgical methods, but the | but is yet to be confirmed. | |||
| assumptions regarding metallurgical | ||||
| treatment processes and parameters made | ||||
| when reporting Mineral Resources may not | ||||
| always be rigorous. Where this is the case, | ||||
| this should be reported with an explanation | ||||
| of the basis of the metallurgical | ||||
| _assumptions made. _ | ||||
| Environment | • | Assumptions made regarding possible | • | No assumptions at this stage in regard to |
| al factors or | waste and process residue disposal | environmental factors or assumptions | ||
| assumptions | options. It is always necessary as part of | have been made. | ||
| the process of determining reasonable | ||||
| prospects for eventual economic extraction | ||||
| to consider the potential environmental | ||||
| impacts of the mining and processing | ||||
| operation. While at this stage the | ||||
| determination of potential environmental | ||||
| impacts, particularly for a green fields | ||||
| project, may not always be well advanced, | ||||
| the status of early consideration of these | ||||
| potential environmental impacts should be | ||||
| reported. Where these aspects have not | ||||
| been considered this should be reported | ||||
| with an explanation of the environmental | ||||
| _assumptions made. _ | ||||
| Bulk density | • | Whether assumed or determined. If | • | Gamma densities were collected at 10cm |
| assumed, the basis for the assumptions. If | intervals down each hole from the 2018 | |||
| determined, the method used, whether wet | drilling campaign and averaged per | |||
| or dry, the frequency of the measurements, | metre. Density values with caliper | |||
| the nature, size and representativeness of | measurements >10% were removed from | |||
| the samples. | the dataset. | |||
| • | The bulk density for bulk material must | • | Densities of 2.39t/m3(oxide), 2.45t/m3 | |
| have been measured by methods that | (transitional) and 2.87t/m3(primary) were | |||
| adequately account for void spaces (vugs, | used to estimate resource block tonnage | |||
| porosity, etc), moisture and differences | for all lodes. These were based on | |||
| between rock and alteration zones within | averaging of gamma densities within | |||
| the deposit. | each weathering zone. These are | |||
| • | Discuss assumptions for bulk density | considered to be in line with regional | ||
| estimates used in the evaluation process of | estimates. | |||
| the different materials. | • | No bulk density measurements have | ||
| been conducted to date. This is planned | ||||
| as a priority to validate current densities. | ||||
| • | A digital terrain model(DTM)has been |
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| Criteria | JORC Code explanation | JORC Code explanation | Commentary | Commentary |
|---|---|---|---|---|
| used to discriminate between the oxide, | ||||
| transitional and primary boundaries and | ||||
| is based on geological logging of the drill | ||||
| holes. | ||||
| Classificatio | • | The basis for the classification of the | • | Mineral Resources have been classified |
| n | Mineral Resources into varying confidence | in the Inferred category in accordance | ||
| categories. | with the JORC Code 2012 guidelines. | |||
| • | Whether appropriate account has been | Classification of the resource involved | ||
| taken of all relevant factors (i.e. relative | several criteria, including drill hole | |||
| confidence in tonnage/grade estimations, | spacing, sampling density, sampling | |||
| reliability of input data, confidence in | locations, lode geometry, QAQC, bulk | |||
| continuity of geology and metal values, | density and confidence in grade | |||
| quality, quantity and distribution of the | continuity. | |||
| data). | • | Lodes were classified as Inferred on the | ||
| • | Whether the result appropriately reflects | basis of the above criteria and this is | ||
| the Competent Person’s view of the | considered appropriate given the existing | |||
| deposit. | data. | |||
| • | The resource estimate and classification | |||
| result reflects the view of the Competent | ||||
| Person. | ||||
| Audits or | • | The results of any audits or reviews of | • | No audits or reviews of the Geostat |
| reviews | Mineral Resource estimates. | resource have been conducted to date. | ||
| Discussion | • | Where appropriate a statement of the | • | The relative accuracy of the Mineral |
| of relative | relative accuracy and confidence level in | Resource is reflected in the classification | ||
| accuracy/ | the Mineral Resource estimate using an | of the Mineral Resource in the Inferred | ||
| confidence | approach or procedure deemed | category as per the guidelines of the | ||
| appropriate by the Competent Person. For | 2012 JORC Code. | |||
| example, the application of statistical or | • | Relative accuracy and confidence have | ||
| geostatistical procedures to quantify the | been assessed through validation of the | |||
| relative accuracy of the resource within | model as outlined above. | |||
| stated confidence limits, or, if such an | • | The Mineral Resource statement reflects | ||
| approach is not deemed appropriate, a | the assumed accuracy and confidence as | |||
| qualitative discussion of the factors that | a global estimate. | |||
| could affect the relative accuracy and confidence of the estimate. |
• | Details of historical production and the exact location of extraction are not |
||
| • | The statement should specify whether it | available and hence are not appropriate | ||
| relates to global or local estimates, and, if | to compare to this most recent resource | |||
| local, state the relevant tonnages, which | estimate. | |||
| should be relevant to technical and | ||||
| economic evaluation. Documentation | ||||
| should include assumptions made and the | ||||
| procedures used. | ||||
| • | These statements of relative accuracy and | |||
| confidence of the estimate should be | ||||
| compared with production data, where | ||||
| _available. _ |
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