Announcement PDF 31 October 2024 Exceptional high-grade gold intercepts at Christmas Creek Drilling at the Martin Prospect intersects 10m @ 12.66g/t Au and 10m @ 7.34g/t Au with multielement analysis identifying two extensive gold trends Highlights • • • • • • Reverse Circulation (RC) drilling at Trek’s flagship Christmas Creek Project in Western Australia has returned exceptional high-grade gold assays from hole 24XCRC097 at the Martin prospect: o 10m @ 12.66g/t Au from 59m, including: ▪ 1m @ 32.6g/t Au; and ▪ 3m @ 29.8g/t Au. o 10m @ 7.34g/t Au from 94m, including: ▪ 2m @ 31.1g/t Au; and ▪ 1m @ 7.85g/t Au. Results reinforce the outstanding prospectivity at Martin, where historical intercepts from previous owner, Newmont, included1: o 7m at 4.9g/t Au from 24m in hole NEWXCAC196, including: ▪ 1m at 29.6g/t Au. o 2m @ 9.65g/t Au from 72m in NEWXCRC012. o 3m @ 2.03g/t Au from 137m, and 4m @ 1.22g/t Au from 8m in NEWXCRC015. Wide-spaced drilling at Martin has now confirmed strong gold mineralisation over a large footprint measuring ~800m x 500m. Multi-element analysis identifies two large gold trends extending over ~1km in a northeasterly orientation and ~1.5km in south-easterly orientation. The high-grade hits sit at the intersection of these two trends. Anomalous gold mineralisation also intersected in drilling at the Zahn and Coogan prospects. Planning for follow-up exploration at Martin underway, including potential optical and acoustic analysis of the recent holes using a down-hole televiewer, ground IP (if suitable) and petrographic analysis. This will help to refine targeting for follow-up drilling. Trek Metals Limited (ASX: TKM) (“Trek” or the “Company”) is pleased to advise that it has intersected broad zones of high-grade gold mineralisation in its maiden drilling program at the 100%-owned Christmas Creek Gold and Rare Earth Element Project in the Kimberley region of WA. The exciting assay results – including 10m at 12.66g/t Au from 59m and 10m at 7.34g/t Au from 94m – occur adjacent to a historical intercept of 2m at 9.65g/t Au drilled by the previous owner, Newmont. 1 Previously announced significant intercepts and collar tables from historical work at Christmas Creek can be found in Trek’s project acquisition announcement via https://investorhub.trekmetals.com.au/announcements/4421568 In conjunction with other recently obtained information, this has significantly upgraded the potential of the Christmas Creek Project to deliver a greenfields gold discovery. At least three zones of significant mineralisation have now been intersected at Martin in both Trek and previous Newmont drilling. Recent drilling information and multi-element geochemistry indicates that these three prospects sit within two emerging gold trends which offer outstanding potential for a major new gold discovery (Figure 1). Figure 1 – Martin Prospect gold in drilling results highlighting the two emerging gold trends. Trek Metals CEO, Derek Marshall, said: “Given the wide-spaced and reconnaissance nature of our maiden drill program, we are very excited to have delivered such impressive results from Christmas Creek. The broad, high-grade intercepts at Martin confirm the potential for a significant orogenic gold system and, together with previously acquired data, have given us significant momentum towards unlocking what we believe could be a very significant greenfields gold discovery. “These results, combined with historical exploration data from Newmont, give us further important insights into the structure of the high-grade mineralisation, with our analysis suggesting a structural regime where the main mineralised trend/s may not have been effectively tested in the drilling completed to date, with significant upside interpreted both along strike and at depth. “We are now integrating this new drilling data into our structural models to help plan follow-up exploration, which will now likely include a combination of down-hole televiewer surveys and petrographic analysis ahead of drilling. “We are also excited about the greater potential of the project and have just received preliminary composite soil sampling data. We are now in the process of ranking target areas and choosing primary samples for analysis to generate the next round of greenfield drill targets in this extremely underexplored region of Western Australia.” 2 Summary of Drilling Results A total of 8,437m of drilling was completed at the Christmas Creek Project in August and September (Table 2). The program focused on four gold prospects – Martin, Coogan, Zahn and Willis – which were identified through the integration and analysis of legacy exploration data, re-processing of geophysical data sets, and the completion of a targeted soil sampling campaign. Historical drilling at the Martin Prospect initially targeted a very large, 4km diameter gold-in-soil anomaly under thin cover. Exploration at Martin by previous owner, Newmont, was restricted to Air Core (AC) drilling and three Reverse Circulation (RC) sections in the central part of the soil anomaly. Significant mineralisation was intersected on each RC section, including 7m at 4.9g/t Au (including 1m at 29.6g/t Au) from 24m in hole NEWXCAC196, 2m @ 9.65g/t Au from 72m in NEWXCRC012 and 4m @ 1.22g/t from 8m and 3m @ 2.03g/t Au from 137m in NEWXCRC0151. Recent assay results from Trek’s maiden drilling have returned two significant high-grade intercepts in hole 24XCRC097 comprising: • • 10m @ 12.66g/t Au from 59m, including: o 1m @ 32.6g/t Au; and o 3m @ 29.8g/t Au. 10m @ 7.34g/t Au from 94m, including: o 2m @ 31.1g/t Au; and o 1m @ 7.85g/t Au. Trek’s hole 24XCRC097 was designed to follow up the high-grade intercept of 2m @ 9.65g/t Au in NEWXCRC012. NEWXCRC012 was the southernmost hole of its drill section and was unconstrained. 24XCRC097 was drilled as a scissor due to the vein orientation identified in NEWXCRC012 by downhole televiewer data (Figure 2). Figure 2 – Cross-section at Martin, highlighting the two significant recent gold intercepts in yellow, the vein orientation in NEWXCRC012, and an interpreted anticline with an untested associated target zone below. 3 The upper zone of mineralisation in 24XCRC097 aligns well with that seen in NEWXCRC012, with logging of strong silica-sericite alteration, disseminated potassic alteration and millimetre-scale veinlets observed in chips from both holes. Analysis of the drill chips from 24XCRC097 and NEWXCRC012, together with down-hole televiewer data from hole NEWXCRC012, indicates that a favourable structural position for an orogenic gold target at Martin sits below the extent of the drilling completed to date and has not yet been successfully tested. Follow-up exploration is now being planned at Martin, including down-hole televiewer and petrographic analysis of 24XCRC097 to assist with structural interpretation ahead of follow-up drilling. The gold in drilling data from the Martin Prospect suggests there are two dominant mineralised trends, with one orientated NE-SW and another SE-NW (Figure 1). This, coupled with the large gold-in-soil anomaly (Figure 3), suggests that there could be a significant orogenic gold system at Martin. Figure 3. Martin Prospect with coloured contoured surface geochemistry over magnetics, showing recent and legacy drilling highlights. Section markers A & A’ relating to Figure 2 are also shown. Zahn Zahn is a large (>2km across) surface DSG Au anomaly in an area of thin cover. It has the strongest amplitude of any DSG gold anomaly in the project area but remains unexplained by limited broadspaced drill testing. Assay results from recent drilling at Zahn returned broad intercepts of anomalous gold mineralisation, with four-metre composite assays including 20m @ 0.21g/t Au from 24m (24XCRC074) and 8m @ 0.13g/t Au from 52m (24XCRC067). One-metre individual samples will now be submitted for assay, with representative drill chips from the recent drilling to be sent for petrographic analysis. 4 This newly identified zone of gold mineralisation at Zahn will be a key target for the Company’s next round of drilling. Coogan Coogan is a gold-rich mineral system with the central drill target for 2024 defined over >1 km of strike. Unlike other prospects within the Project, Coogan is in an area of exposed Paleoproterozoic rocks. Coogan has both a surface geochemical anomaly and locally outcropping quartz veining where rock chip sampling returned values of up to 3.46g/t Au1. RC drilling at Coogan intercepted a fertile shear zone with evidence of a hydrothermal gold system. The interpreted extension of this large shear zone has also recently been tested with soil sampling, with assay results being interpreted. The shear zone that hosts Coogan, and its extensions, is clearly a very large and fertile structure. Trek plans to continue targeting along this structure. Other Prospects Willis was defined as a large coherent gold geochemical anomaly in an area of thin cover of a monotonous sand plain. In-fill DSG sampling completed in 2022 confirmed a large 3 x 1.5km anomaly, with a central coherent core of 1.5km length. A line of drilling at Willis through the strongest part of the anomaly did not return any significant results. A coherent anomaly of a limited REE assay suite has been identified to the south of the Zahn gold target, 13km west of RareX’s (ASX: REE) Cummins Range REE deposit. Comprising elevated Ce + La + Y, the Zahn South target is a large (2.7km x 900m) elongate ENE trending geochemical anomaly. A single line of drilling across the Zahn South REE target did not return any significant results. Next Steps The focus is now to determine the controls on the distribution of high-grade gold mineralisation at Martin and generate/refine robust drill targets across the Christmas Creek Project. Of immediate importance is: • • • • • • Down-hole televiewer and structural interpretation. Geochemical analysis of 1m split samples from anomalous 4m composite samples. Petrology on mineralised samples and host rocks. Full geochemical review and interpretation. Petrophysical/geochemical back calculations to determine whether Induced Polarisation could be an effective technique for detecting significant quantities of gold mineralisation. Finalise interpretation of the recently received composite soil sampling data, including submitting primary samples for assay based on highly anomalous composite samples. This next round of work is designed to further enhance the Company’s understanding of the structure and controls over the mineralisation at the Christmas Creek Project, with this information to support planning for a Phase 2 drilling program targeting a major discovery. 5 Christmas Creek Project (Kimberley, Western Australia) Located south-west of Halls Creek, the Christmas Creek Project (Figure 4) comprises a largely concealed district-scale gold and rare earths exploration opportunity in the Kimberley region of WA associated with major continental-scale tectonic lineament intersections. The Christmas Creek Project was previously part of Newmont Exploration Pty Ltd’s (Newmont) global exploration portfolio with Trek acquiring the project in the December 2023 quarter. The Company also secured additional tenement applications, adding to this district-scale greenfields gold and rare earths exploration project. Figure 4: Continental scale context and location map for the Christmas Creek Project, located at the intersection of G3 and G5 metallogenic lineament corridors, potentially representing the intersection of the Granites-Tanami Orogen & the Halls Creek Orogen. Four main prospects – Coogan, Martin, Zahn and Willis – were identified via fine fraction soil sampling (Figure 5). Significant gold intercepts have been returned from Martin, with encouraging anomalism identified at both Coogan and Zahn, indicating that gold-rich fluids have passed through the structures at these locations. Trek is focused on identifying traps sites with significant accumulations of mineralisation. 6 Figure 5: Gold heatmap as defined by Deep Sensing Geochemistry (DSG) surface geochemistry across the project area, highlighting the four main prospect areas; Coogan, Martin, Zahn & Willis. Red colours outline results above 6ppb Au. 1 Previously announced significant intercepts and collar tables from historical work at Christmas Creek can be found in Trek’s project acquisition announcement via https://investorhub.trekmetals.com.au/announcements/4421568 7 Authorised by the Board of Directors ENDS For further information contact: INVESTORS: MEDIA: Derek Marshall Nicholas Read dmarshall@trekmetals.com.au info@trekmetals.com.au 0419 929 046 JOIN TKM’S INTERACTIVE INVESTOR HUB https://investorhub.trekmetals.com.au/welcome Interact with Trek Metal’s announcements and updates by asking questions and comments which our team can respond to where possible https://investorhub.trekmetals.com.au/link/lyaklr COMPETENT PERSONS STATEMENT The information in this report relating to Exploration Results is based on information compiled by the Company’s Chief Executive Officer, Mr Derek Marshall, a Competent Person, and Member of the Australian Institute of Geoscientists (AIG). Mr Marshall has sufficient experience relevant to the style of mineralisation and to the type of activity described 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.” Mr Marshall has disclosed that he holds fully paid Ordinary Shares and Performance Rights in the Company. Mr Marshall consents to the inclusion in this announcement of the matters based on his information in the form and content in which it appears. DISCLAIMERS AND FORWARD-LOOKING STATEMENTS This announcement contains forward looking statements. Forward looking statements are often, but not always, identified A words such as "seek", “target”, "anticipate", “forecast”, "believe", "plan", "estimate", "expect" and "intend" and statements that an event or result "may", "will", "should", "could" or "might" occur or be achieved and other similar expressions. The forward-looking statements in this announcement are based on current expectations, estimates, forecasts and projections about Trek and the industry in which it operates. They do, however, relate to future matters and are subject to various inherent risks and uncertainties. Actual events or results may differ materially from the events or results expressed or implied by any forward-looking statements. The past performance of Trek is no guarantee of future performance. None of Trek’s directors, officers, employees, agents or contractors makes any representation or warranty (either express or implied) as to the accuracy or likelihood of fulfilment of any forwardlooking statement, or any events or results expressed or implied in any forward-looking statement, except to the extent required by law. You are cautioned not to place undue reliance on any forwardlooking statement. The forward-looking statements in this announcement reflect views held only as at the date of this announcement. 8 Table 1. Significant intercepts from RC/AC drilling at the Martin and Zahn Prospects using a >0.1g/t Au cut-off. Hole ID From (m) To (m) Interval (m) g/t Au Gram Metres 24XCRC041 20 24 4 0.10 0.4 Martin 24XCRC046 72 76 4 0.30 1.2 Coogan 24XCRC047 52 56 4 0.12 0.48 Coogan 24XCRC048 140 144 4 0.13 0.52 Coogan 24XCRC054 16 24 8 0.25 1.96 Coogan 24XCRC056 12 16 4 0.22 0.88 Zahn 24XCRC067 12 16 4 0.11 0.44 Zahn 24XCRC067 52 60 8 0.13 1.04 Zahn 24XCRC074 24 44 20 0.21 4.16 Zahn 24XCRC074 52 56 4 0.10 0.4 Zahn 24XCRC090 24XCRC090 24XCRC090 12 80 92 16 84 96 4 4 4 0.40 0.19 0.27 1.6 0.76 1.08 Martin Martin Martin 24XCRC090 108 112 4 0.25 1 Martin 24XCRC097 incl. 69 60 64 78 84 10 1 3 2 1 12.66 32.60 29.80 0.41 0.11 126.61 32.6 89.4 0.81 0.11 10m @ 12.66g/t Au from 59m 1m @ 32.6g/t Au from 59m 3m @ 29.8g/t Au from 61m 24XCRC097 24XCRC097 59 59 61 76 83 Martin Martin Martin Martin Martin 24XCRC097 incl. 94 96 104 98 10 2 7.34 31.10 73.43 62.2 10m @ 7.34g/t Au from 94m 2m @ 31.1g/t Au from 96m Martin Martin 102 103 1 7.85 7.85 1m @ 7.85g/t Au from 102m Martin 24XCRC103 24XCRC103 48 72 56 76 8 4 0.19 0.26 1.48 1.04 Martin Martin 24XCRC103 84 88 4 0.17 0.68 Martin 24XCRC104 24 28 4 0.44 1.76 Martin 24XCRC107 80 84 4 0.19 0.76 Martin 24XCRC107 104 108 4 0.18 0.72 Martin Significant Intercept Prospect Table 2. Collar Table for 2024 RC/AC drilling at the Christmas Creek Project HoleID Type Depth Grid East North RL Dip Azi Surv LeaseID Prospect 24XCRC039 RC 120 MGA2020_52 273002 7871197 379 -60 180 GPS E80/5083 Martin 24XCRC040 RC 120 MGA2020_52 273001 7871302 376 -60 180 GPS E80/5083 Martin 24XCRC041 RC 120 MGA2020_52 273006 7871395 377 -60 180 GPS E80/5083 Martin 24XCRC042 RC 150 MGA2020_52 260731 7877280 339 -60 145 GPS E80/5427 Coogan 24XCRC043 RC 150 MGA2020_52 260677 7877364 339 -60 145 GPS E80/4975 Coogan 24XCRC044 RC 150 MGA2020_52 260616 7877445 340 -60 145 GPS E80/4975 Coogan 24XCRC045 RC 136 MGA2020_52 260554 7877526 341 -60 145 GPS E80/4975 Coogan 24XCRC046 RC 150 MGA2020_52 260502 7877605 342 -60 145 GPS E80/4975 Coogan 24XCRC047 RC 150 MGA2020_52 260437 7877697 342 -60 145 GPS E80/4975 Coogan 24XCRC048 RC 150 MGA2020_52 260389 7877773 339 -60 145 GPS E80/4975 Coogan 24XCRC049 RC 150 MGA2020_52 260323 7877855 339 -60 145 GPS E80/4975 Coogan 9 HoleID Type Depth Grid East North RL Dip Azi Surv LeaseID Prospect 24XCRC050 RC 150 MGA2020_52 260269 7877942 338 -60 145 GPS E80/4975 Coogan 24XCRC051 RC 150 MGA2020_52 260204 7878023 336 -60 145 GPS E80/4975 Coogan 24XCRC052 RC 150 MGA2020_52 260147 7878111 337 -60 145 GPS E80/4975 Coogan 24XCRC053 RC 162 MGA2020_52 260086 7878187 333 -60 145 GPS E80/4975 Coogan 24XCRC054 RC 72 MGA2020_52 260472 7877669 341 -60 110 GPS E80/4975 Coogan 24XCRC055 RC 105 MGA2020_52 292500 7867390 424 -60 180 GPS E80/5083 Zahn 24XCRC056 RC 111 MGA2020_52 292501 7867497 424 -60 180 GPS E80/5083 Zahn 24XCRC057 RC 99 MGA2020_52 292503 7867598 424 -60 180 GPS E80/5083 Zahn 24XCRC058 RC 102 MGA2020_52 292504 7867698 424 -60 180 GPS E80/5083 Zahn 24XCRC059 RC 105 MGA2020_52 292502 7867798 423 -60 180 GPS E80/5083 Zahn 24XCRC060 RC 102 MGA2020_52 292504 7867895 424 -60 180 GPS E80/5083 Zahn 24XCRC061 RC 105 MGA2020_52 292503 7868003 425 -60 180 GPS E80/5083 Zahn 24XCRC062 RC 111 MGA2020_52 292506 7868098 426 -60 180 GPS E80/5083 Zahn 24XCRC063 RC 105 MGA2020_52 292504 7868200 425 -60 180 GPS E80/5083 Zahn 24XCRC064 RC 105 MGA2020_52 293003 7868001 428 -60 180 GPS E80/5083 Zahn 24XCRC065 RC 90 MGA2020_52 293003 7868094 427 -60 180 GPS E80/5083 Zahn 24XCRC066 RC 99 MGA2020_52 293008 7868198 426 -60 180 GPS E80/5083 Zahn 24XCRC067 RC 102 MGA2020_52 293004 7868300 428 -60 180 GPS E80/5083 Zahn 24XCRC068 RC 102 MGA2020_52 293005 7868401 427 -60 180 GPS E80/5083 Zahn 24XCRC069 RC 102 MGA2020_52 293507 7868094 429 -60 180 GPS E80/5083 Zahn 24XCRC070 RC 102 MGA2020_52 293505 7868197 429 -60 180 GPS E80/5083 Zahn 24XCRC071 RC 99 MGA2020_52 293506 7868294 430 -60 180 GPS E80/5083 Zahn 24XCRC072 RC 99 MGA2020_52 293504 7868393 430 -60 180 GPS E80/5083 Zahn 24XCRC073 RC 99 MGA2020_52 294004 7867993 423 -60 180 GPS E80/5083 Zahn 24XCRC074 RC 102 MGA2020_52 294004 7868089 422 -60 180 GPS E80/5083 Zahn 24XCRC075 RC 99 MGA2020_52 294005 7868192 423 -60 180 GPS E80/5083 Zahn 24XCRC076 RC 102 MGA2020_52 294005 7868296 423 -60 180 GPS E80/5083 Zahn 24XCRC077 RC 93 MGA2020_52 294004 7868394 425 -60 180 GPS E80/5083 Zahn 24XCRC078 RC 102 MGA2020_52 294001 7868495 425 -60 180 GPS E80/5083 Zahn 24XCRC079 RC 108 MGA2020_52 300254 7878651 373 -60 180 GPS E80/5082 Willis 24XCRC080 RC 60 MGA2020_52 300251 7878758 378 -60 180 GPS E80/5082 Willis 24XCRC081 RC 60 MGA2020_52 300251 7878854 376 -60 180 GPS E80/5082 Willis 24XCRC082 RC 60 MGA2020_52 300252 7878955 378 -60 180 GPS E80/5082 Willis 24XCRC083 RC 60 MGA2020_52 300252 7879055 397 -60 180 GPS E80/5082 Willis 24XCRC084 RC 60 MGA2020_52 300251 7879156 398 -60 180 GPS E80/5082 Willis 24XCRC085 RC 120 MGA2020_52 300251 7879256 382 -60 180 GPS E80/5082 Willis 24XCRC086 RC 60 MGA2020_52 300251 7879361 383 -60 180 GPS E80/5082 Willis 24XCRC087 RC 60 MGA2020_52 300255 7879456 384 -60 180 GPS E80/5082 Willis 24XCRC088 RC 60 MGA2020_52 272246 7870046 387 -60 0 GPS E80/5083 Martin 24XCRC089 RC 120 MGA2020_52 272243 7869888 337 -60 0 GPS E80/5083 Martin 24XCRC090 RC 120 MGA2020_52 272243 7869787 336 -60 0 GPS E80/5083 Martin 24XCRC091 RC 120 MGA2020_52 272247 7869692 331 -60 0 GPS E80/5083 Martin 24XCRC092 RC 120 MGA2020_52 272247 7869586 365 -60 0 GPS E80/5083 Martin 24XCRC093 RC 120 MGA2020_52 272249 7869287 358 -60 0 GPS E80/5083 Martin 24XCRC094 RC 120 MGA2020_52 272247 7869189 357 -60 0 GPS E80/5083 Martin 24XCRC095 RC 120 MGA2020_52 272010 7869401 357 -60 180 GPS E80/5083 Martin 10 HoleID Type Depth Grid East North RL Dip Azi Surv LeaseID Prospect 24XCRC096 RC 120 MGA2020_52 272007 7869497 359 -60 180 GPS E80/5083 Martin 24XCRC097 RC 120 MGA2020_52 272010 7869593 358 -60 180 GPS E80/5083 Martin 24XCRC098 RC 120 MGA2020_52 273002 7868693 379 -60 180 GPS E80/5083 Martin 24XCRC099 RC 120 MGA2020_52 272501 7869438 347 -60 180 GPS E80/5083 Martin 24XCRC100 RC 120 MGA2020_52 272499 7869331 373 -60 180 GPS E80/5083 Martin 24XCRC101 RC 134 MGA2020_52 272499 7869146 367 -60 180 GPS E80/5083 Martin 24XCRC102 RC 120 MGA2020_52 272500 7869046 343 -60 180 GPS E80/5083 Martin 24XCRC103 RC 120 MGA2020_52 273008 7868785 340 -60 180 GPS E80/5083 Martin 24XCRC104 RC 120 MGA2020_52 273001 7868888 369 -60 180 GPS E80/5083 Martin 24XCRC105 RC 132 MGA2020_52 271744 7869703 336 -60 0 GPS E80/5083 Martin 24XCRC106 RC 120 MGA2020_52 271750 7869598 338 -60 0 GPS E80/5083 Martin 24XCRC107 RC 120 MGA2020_52 271746 7869701 341 -60 0 GPS E80/5083 Martin 24XCRC108 RC 120 MGA2020_52 271754 7869794 342 -60 0 GPS E80/5083 Martin 24XCRC109 RC 115 MGA2020_52 272003 7869544 339 -60 0 GPS E80/5083 Martin 24XCRC110 RC 120 MGA2020_52 272001 7869642 339 -60 0 GPS E80/5083 Martin 24XCRC111 RC 69 MGA2020_52 272248 7869575 338 -60 0 GPS E80/5083 Martin 24XCAC001 AC 45 MGA2020_52 293996 7865223 401 -90 0 GPS E80/5083 Zahn Sth 24XCAC002 AC 53 MGA2020_52 293931 7865294 402 -90 0 GPS E80/5083 Zahn Sth 24XCAC003 AC 65 MGA2020_52 293874 7865350 407 -90 0 GPS E80/5083 Zahn Sth 24XCAC004 AC 56 MGA2020_52 293819 7865419 415 -90 0 GPS E80/5083 Zahn Sth 24XCAC005 AC 38 MGA2020_52 293768 7865474 415 -90 0 GPS E80/5083 Zahn Sth 24XCAC006 AC 70 MGA2020_52 293713 7865528 415 -90 0 GPS E80/5083 Zahn Sth 11 JORC Table Section 1: Sampling Techniques and Data: Criteria Sampling techniques Drilling techniques Drill sample recovery JORC Code explanation • Nature and quality of sampling (eg cut channels, random chips, or specific specialised industry standard measurement tools appropriate to the minerals under investigation, such as down hole gamma sondes, or handheld XRF instruments, etc). These examples should not be taken as limiting the broad meaning of sampling. • Include reference to measures taken to ensure sample representivity and the appropriate calibration of any measurement tools or systems used. • Aspects of the determination of mineralisation that are Material to the Public Report. In cases where ‘industry standard’ work has been done this would be relatively simple (eg ‘reverse circulation drilling was used to obtain 1 m samples from which 3 kg was pulverised to produce a 30 g charge for fire assay’). In other cases more explanation may be required, such as where there is coarse gold that has inherent sampling problems. Unusual commodities or mineralisation types (eg submarine nodules) may warrant disclosure of detailed information. • Drill type (eg core, reverse circulation, openhole hammer, rotary air blast, auger, Bangka, sonic, etc) and details (eg core diameter, triple or standard tube, depth of diamond tails, facesampling bit or other type, whether core is oriented and if so, by what method, etc). Commentary • • • Logging • • • Method of recording and assessing core and chip sample recoveries and results assessed. Measures taken to maximise sample recovery and ensure representative nature of the samples. Whether a relationship exists between sample recovery and grade and whether sample bias may have occurred due to preferential loss/gain of fine/coarse material. Whether core and chip samples have been geologically and geotechnically logged to a level of detail to support appropriate Mineral Resource estimation, mining studies and metallurgical studies. Whether logging is qualitative or quantitative in nature. Core (or costean, channel, etc) photography. The total length and percentage of the • Reverse circulation (RC) and Aircore (AC) drilling was used to obtain subsurface samples. • Drill cuttings were collected at 1m intervals down the length of each hole. Sampling was completed from a gated cyclone over a static cone splitter into a calico bag with a median sample weight of 2.37 kg per 1m sample. The remainder of the drill cuttings were collected in a bucket and laid out in rows of 20 on a sample pad beside the drill rig. • Individual samples were then composited from the spoil piles as described in a subsequent section. • The sampling protocol is common practice for RC and AC drilling and considered appropriate for the stage of exploration. • Representivity was calculated by the collection and weighing of the entire drill cuttings from one hole, including the subsample, and comparing against the calculated volume of rock for the specific hole diameter (107mm). Estimates for the SG of the rock mass were made based on the logged rock type and known ranges for such rocks. • Drill testing was undertaken by Reverse Circulation (RC) and Aircore (AC) with face sampling drill bit, drill cuttings are returned to surface via inner tubes in the drill string. • Drill bit diameter ranged from 115mm to 105mm depending on wear • Reverse Circulation drilling recoveries were good. 13% of 1m drill samples have been weighed and one hole had the entire drill sample collected in green plastic bags and weighed. Single metre primary samples returned a median weight of 2.37kg. Total sample return for the measured hole returned a median weight of 16.5kg per metre or a range of 70% to 76% of the calculated sample depending on the SG used for the rock mass. • Duplicate samples were collected from the rig every 50m, with duplicate pairs being weighed to monitor the performance of the cyclone and cone splitter. • Sample recovery was consistent across the program with a single driller operating the drill rig and maintaining constant drilling conditions with the equipment, including monitoring bit wear, air return, and cyclone performance. • A cone splitter was used on the drill rig which theoretically gives an even and impartial split of the sample when operated correctly. Adjustable control gates allow the sample size to be calibrated to suit the ground conditions and target sample size. These measures are best practice in producing representative samples. • There is no observed relationship between sample recovery and grade. • Chip trays of 2m composite samples have been collected for the entire length of each hole, logged, and photographed. • Logging has been completed on all drill chips and is qualitative. • Logging covers the entire drilled length of each hole. 12 Criteria Sub-sampling techniques and sample preparation Quality of assay data and laboratory tests JORC Code explanation relevant intersections logged. • If core, whether cut or sawn and whether quarter, half or all core taken. • If non-core, whether riffled, tube sampled, rotary split, etc and whether sampled wet or dry. • For all sample types, the nature, quality and appropriateness of the sample preparation technique. • Quality control procedures adopted for all subsampling stages to maximise representivity of samples. • Measures taken to ensure that the sampling is representative of the in-situ material collected, including for instance results for field duplicate/second-half sampling. • Whether sample sizes are appropriate to the grain size of the material being sampled. • • • The nature, quality and appropriateness of the assaying and laboratory procedures used and whether the technique is considered partial or total. For geophysical tools, spectrometers, handheld XRF instruments, etc, the parameters used in determining the analysis including instrument make and model, reading times, calibrations factors applied and their derivation, etc. Nature of quality control procedures adopted (eg standards, blanks, duplicates, external laboratory checks) and whether acceptable levels of accuracy (ie lack of bias) and precision have been establ