Announcement PDF ASX ANNOUNCEMENT 1 October 2026 ASX:VKA OTC:VKALF vikingmines.com 15-17 Old Aberdeen Place West Perth, WA, 6005 P +61 8 6245 0870 F +61 8 9322 5230 contact@vikingmines.com 1 GRAVITY TESTWORK REPLICATES ACROSS ALL FOUR LINKA SAMPLES, CONQUEST DELIVERS 69.3% WO3 • Gravity separation testwork now completed on three additional metallurgical samples (LKMET0001, LKMET0002 and LKMET0003), bringing the total to four samples tested from the Linka Tungsten Project.i • Results from the three additional samples provide additional metallurgical support and compliment the original gravity separation testwork completed on the Linka Pit sample (LKMET0004).ii,iii,iv • Conquest sample (LKMET0003) delivered both higher grade and recovery into a gravity concentrate (compared with the May 2026 LKMET0004 test), at 69.3% WO3 and 43.8% recovery, from the lowest-grade sample tested (head grade of 0.76% WO3). • All four samples have produced gravity concentrates grading above 50% WO₃, supporting a consistent gravity separation response across the samples tested. • Flotation testwork on the gravity tails is ongoing with initial gravity plus flotation testwork on the Linka Stockpile sample (LKMET0001) increasing combined recovery to 73.1%, with flotation optimisation continuing on all three samples. • Tungsten pricing remains near all-time highs for tungsten concentrates grading 50% - 70% at US$2,440/metric tonne unit (mtu) WO3 (US$244,000/t), demonstrating the high- value product attainable from Linkav . Figure 1; Gravity concentrate grade versus recovery for all four Linka metallurgical samples. New results (diamonds) plotted against previously reported LKMET0004 gravity results (circles). 2 ASX:VKA | OTC:VKALF | vikingmines.com Viking Mines Limited (ASX: VKA, OTCID: VKALF) (“Viking” or “the Company”) is pleased to provide an update on the ongoing metallurgical testwork programme at the Linka Tungsten Project (“Linka” or “the Project”) in Nevada, USA. Gravity separation testwork has now been completed on three additional metallurgical samples, LKMET0001 (Linka Stockpile), LKMET0002 (Hillside) and LKMET0003 (Conquest), bringing the total number of samples tested to four, following the work previously reported on the Linka Pit sample, LKMET0004.ii,iii,iv The results for the three additional samples support the original testwork, with recoveries and grades summarised in Table 1 and Figure 1. The samples comprised selected loose surface material identified using ultraviolet light. The results relate to the samples tested; their representativeness of in-situ mineralisation or future plant feed has not been established. Viking Mines Managing Director & CEO Julian Woodcock said: “The key takeaway from these results is that the gravity separation is proving repeatable across additional samples when compared to our prior testwork. Recovery is performing well, with improvements noted in the Hillside and Linka Stockpile samples, whilst grade is maintaining above our 50% WO3 target for the gravity stage. “Significantly, the Conquest sample delivered a higher grade and recovery product than the original May 2026 Linka Pit test result, at 69.3% WO3 and 43.8% recovery, and it did so from the lowest-grade sample we have tested to date, with a head grade of 0.76% WO3. “Flotation testwork on the gravity tails is ongoing and we will update the market as that work progresses and completes. “With global tungsten concentrate pricing commanding a significant US$244,000 per tonnev WO3, the Linka concentrates are proving to be a very high value product.” GRAVITY SEPARATION TESTWORK RESULTS Gravity separation testwork has been completed on three additional samples at Base Met Labs (BML) under the supervision of Independent Metallurgical Operations (IMO), applying the gravity separation conditions established on the Linka Pit sample LKMET0004.iv Key results are as follows: • Conquest (LKMET0003): 69.3% WO3 concentrate at 43.8% recovery from a 0.76% WO3 head grade; a higher grade and recovery than the May 2026 LKMET0004 test result (66.6% WO3 at 42.7% recovery),iii from the lowest-grade sample tested. • Linka Stockpile (LKMET0001): 55.8% WO3 concentrate at 46.8% recovery from a 0.99% WO3 head grade, the highest gravity recovery of the four samples. • Hillside (LKMET0002): 53.9% WO3 concentrate at 42.5% recovery from a 0.91% WO3 head grade. • All four samples have now produced a gravity concentrate grading above 50% WO₃. Gravity recoveries across the tests reported in Table 1 range from 42.2% to 46.8%. 3 ASX:VKA | OTC:VKALF | vikingmines.com FLOTATION TESTWORK ON GRAVITY TAILS Flotation testwork on the gravity tails from the three additional samples is ongoing, following the approach applied to LKMET0004, where rougher/cleaner flotation of the gravity tails lifted combined gravity plus flotation recovery to 76.0% at a concentrate grade of 56.9% WO3.iv Initial gravity plus flotation testwork has been completed on the Linka Stockpile sample (LKMET0001, test Cl-31C), returning a combined concentrate of 44.7% WO3 at 73.1% recovery (Table 1). This first pass has lifted recovery from 46.8% for the gravity stage alone to 73.1%, whilst the combined concentrate grade is currently below the 50% WO3 target. Flotation optimisation testwork is continuing on this sample with the objective of lifting the combined concentrate grade above 50% WO3 whilst maintaining recovery, consistent with the improvements achieved through successive rounds of flotation optimisation on LKMET0004.iii,iv Flotation testwork on the gravity tails from the Hillside (LKMET0002) and Conquest (LKMET0003) samples is in progress, with results to be reported as they are received. Table 1; Metallurgical testwork results for the four Linka metallurgical samples, showing gravity-stage and combined gravity plus flotation results. New results shaded. LKMET0004 results as previously reported on the dates shown.ii,iii,iv Flotation testwork on the gravity tails of LKMET0002 and LKMET0003 is in progress. Sample ID Release Date Test ID Circuit Assayed Feed Grade (% WO3) Concentrate Grade (% WO3) WO3 Recovery (%) Linka Pit LKMET0004 31/03/2026 R-16 Gravity 1.28 63.6 42.4 Gravity + Flotation 56.4 46.0 28/05/2026 Cl-28B Gravity 66.6 42.7 Gravity + Flotation 62.5 59.8 10/06/2026 Cl-28C Gravity 66.6 42.2 Gravity + Flotation 56.9 76.0 Linka Stockpile LKMET0001 This release Cl-31C Gravity 0.99 55.8 46.8 Gravity + Flotation 44.7 73.1 Hillside LKMET0002 This release R-33F Gravity 0.91 53.9 42.5 Gravity + Flotation In progress Conquest LKMET0003 This release R-34E Gravity 0.76 69.3 43.8 Gravity + Flotation In progress NEXT STEPS The Company continues to advance the Nevada portfolio of tungsten projects on multiple fronts. Key workstreams advancing include: • Flotation testwork on the gravity tails from the three additional samples is ongoing, including optimisation of the flotation stage on the Linka Stockpile sample (LKMET0001) and initial flotation testwork on the Hillside (LKMET0002) and Conquest (LKMET0003) samples. 4 ASX:VKA | OTC:VKALF | vikingmines.com • Second round of ore sorting testwork with TOMRA in Germany on 2 x new samples collected from surface stockpiles at Linka. • Assays pending for a further 7 holes around the Linka (Main) Pit (expected mid-October) with previously reported visually logged intervals up to 12.2m. Assay results are required to determine tungsten grades.vi • Assays pending for 4 x SW extension holes and 2 x regional exploration holes (expected late- October). • Resumption of the drilling programme at Linka in mid-October. • Identification of toll treatment options for the approved 900t bulk sample. The Company will continue to update the market as further information is received. END This announcement has been authorised for release by the Board of the Company. Julian Woodcock Managing Director and CEO Viking Mines Limited For further information, please contact: Michaela Stanton-Cook - Company Secretary Viking Mines Limited +61 8 6245 0870 Learn more about Viking Mines via our investor hub here. i ASX announcement 14 January 2026: High Grade Assays Up To 1.3% WO3 from Linka Tungsten Project, USA. ii ASX announcement 31 March 2026: Viking’s Linka Project Achieves 63.6% WO3 Concentrate. iii ASX announcement 28 May 2026: Linka Metallurgy Success Delivers 62.5% WO3 at 59.8% Recovery. iv ASX announcement 10 June 2026: Linka Tungsten Project Recovery Improved to 76.0% at 56.9% WO3 Grade. v Source: Fastmarkets.com 30th September 2026. vi ASX announcement 17 September 2026: Drilling Extends Priority Zones at Linka. Competent Persons Statement - Exploration Results Information in this release that relates to Exploration Results is based on information compiled by Mr Julian Woodcock, who is a Member of the Australian Institute of Mining and Metallurgy (MAusIMM(CP) - 305446). Mr Woodcock is a full-time employee of Viking Mines Ltd. Mr Woodcock has sufficient experience which is relevant to the style of mineralisation and type of deposit under consideration and to the activity being undertaken 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 Woodcock consents to the disclosure of the information in this report in the form and context in which it appears. Competent Persons Statement - Metallurgical Testwork The information in this announcement that relates to Exploration Results from metallurgical test work is based on, and fairly represents, information and supporting documentation compiled by Mr Peter Adamini, BSc (Mineral Science and Chemistry), who is a Member of The Australasian Institute of Mining and Metallurgy (AusIMM). Mr Adamini is a full-time employee of SGS Australia owned Independent Metallurgical Operations Pty Ltd, a wholly owned subsidiary of SGS Australia Holdings Pty Ltd, and has sufficient experience that is relevant to the style of mineralisation and type of deposit under consideration and to the activity being undertaken 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 Adamini is an independent consultant engaged by Viking Mines Limited for metallurgical representation. Mr Adamini consents to the disclosure of the information in this report in the form and context in which it appears. Forward-Looking Statements This document may include forward-looking statements. Forward-looking statements include, but are not limited to, statements concerning Viking Mines Limited’s planned exploration programme and other statements that are not historical facts. When used in this document, the words such as "could," "plan," "estimate," "expect," "intend," "may”, "potential," "should," and similar expressions are forward-looking statements. Although Viking Mines Limited believes that its expectations reflected in these forward-looking statements are reasonable, such statements involve risks and uncertainties and no assurance can be given that actual results will be consistent with these forward-looking statements. 5 ASX:VKA | OTC:VKALF | vikingmines.com ABOUT THE LINKA TUNGSTEN PROJECT The Linka Tungsten Project is located in Lander and Pershing counties, Nevada, USA, and comprises three historically producing tungsten mines: Linka, Conquest and Hillside. Mineralisation occurs as scheelite-bearing skarn developed in limestone along the contact with granitic intrusive rocks. The mines produced approximately 65,000 tonnes at 0.5% WO₃ through a 360 tonne-per-day mill up to 1956, when operations ceased in response to the prevailing tungsten price rather than for geological reasons. Linka's historical mill grade of approximately 0.5% WO₃ ranks among the highest of comparable global tungsten projects. In December 2025 Viking signed a binding term sheet to acquire a 100% interest in the Project and is pursuing a brownfields restart strategy that builds on substantial existing infrastructure, including a 150ft (~46m) shaft, historic pits and underground workings, an on-site ROM pad and historical tailings dam, and approximately 8.5km² of consolidated mining claims, with sealed highway within 7km and grid power within 4km. Digitisation of 72 historical drillholes (2,908m) has extended the known mineralised trend to 1.6km within an interpreted ~7km regional intrusive contact that remains largely untested. Surface sampling has returned grades up to 14.7% WO₃, and recent metallurgical testwork has produced a 56.9% WO₃ concentrate at 76.0% recovery using conventional gravity and flotation. With tungsten designated a critical mineral and the US REEShore Act mandating Chinese-free tungsten in US military supply chains from December 2026, the Project is positioned to advance towards a near-term, domestically sourced restart. 6 ASX:VKA | OTC:VKALF | vikingmines.com APPENDIX 1 - JORC CODE, 2012 EDITION - TABLE 1 JORC Table 1, Section 1 - Sampling Techniques and Data Criteria JORC Code explanation Commentary Sampling techniques Nature and quality of sampling (e.g. cut channels, random chips, or specific specialised industry standard measurement tools appropriate to the minerals under investigation, such as downhole gamma sondes, or handheld XRF instruments, etc.). These examples should not be taken as limiting the broad meaning of sampling. Metallurgical Samples Collection of loose rocks on surface from each of the four sample locations (LKMET0001 to LKMET0004) using an ultraviolet light (254nm wavelength) to identify mineralised material. Samples collected were bagged into calico and polyweave bags and subsequently broken into smaller pieces to aid transportation to the metallurgical laboratory and facilitate processing by the metallurgical laboratory. Include reference to measures taken to ensure sample representivity and the appropriate calibration of any measurement tools or systems used. Metallurgical Samples Samples are deemed representative of the target mineralisation being sampled as they were identified using an ultraviolet light which confirmed scheelite bearing mineralisation was sourced. It is unknown if the samples are representative of the original in-situ material due to rocks being collected from loose material on surface and not being in-situ. 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 (e.g. ‘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 (e.g. submarine nodules) may warrant disclosure of detailed information Metallurgical Samples Loose rocks collected from surface and delivered to the metallurgical laboratory in individually numbered calico bags. Samples which corresponded to each parent (composite) sample were prepared by the laboratory by combining contents from the designated bags, stage crushing to <3.35 mm, passing through a riffle splitter multiple times and blending to homogenise. This blended sample was further processed through the riffle splitter to generate a representative sub-sample. This sub-sample was then pulverised to minimum P80 <75 µm prior to being submitted for assay. This sub-sample is considered accurate with sample mineralogy not expected to have caused sampling issues. Drilling techniques Drill type (e.g. core, reverse circulation, open-hole hammer, rotary air blast, auger, Bangka, sonic, etc.) and details (e.g. core diameter, triple or standard tube, depth of diamond tails, face-sampling bit or other type, whether core is oriented and if so, by what method, etc.). Not applicable, no drilling being reported. Drill sample recovery Method of recording and assessing core and chip sample recoveries and results assessed. Not applicable, no drilling being reported. Measures taken to maximise sample recovery and ensure representative nature of the samples. Not applicable, no drilling being reported. 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. Not applicable, no drilling being reported. Logging 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. Not applicable, no drilling being reported. Whether logging is qualitative or quantitative in nature. Core (or costean, channel, etc.) photography. Not applicable, no drilling being reported. 7 ASX:VKA | OTC:VKALF | vikingmines.com Criteria JORC Code explanation Commentary The total length and percentage of the relevant intersections logged. Not applicable, no drilling being reported. Subsampling techniques and sample preparation If core, whether cut or sawn and whether quarter, half or all core taken. Not applicable, no drilling being reported. If non-core, whether riffled, tube sampled, rotary split, etc. and whether sampled wet or dry. Metallurgical Samples Samples were collected dry. No splitting was undertaken in the field. In the metallurgical laboratory, each sample was prepared by stage crushing to <3.35 mm and then homogenised and sub-sampled using a riffle splitter. For all sample types, the nature, quality and appropriateness of the sample preparation technique. Metallurgical Samples The sample preparation, blending and sub-sampling techniques are appropriate for this material’s mineralogical makeup. Quality control procedures adopted for all subsampling stages to maximise representivity of samples. Metallurgical Samples No QAQC samples were utilised by Viking. The metallurgical laboratory inserted blanks and standards which contained WO3 grades similar to the assayed samples’ WO3 head grades. 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. Metallurgical Samples In-situ material has not been sampled. No duplicates taken. On completion of the metallurgical testwork programme, the metallurgical balance will be used to verify the head grade assays. Whether sample sizes are appropriate to the grain size of the material being sampled. The Competent Person considers the current methods and processes described as appropriate for this style of mineralisation due to the grade of mineralisation being reported. Sample size of the metallurgical samples is appropriate due to both the grade of the mineralisation and the large samples collected. Quality of assay data and laboratory tests The nature, quality and appropriateness of the assaying and laboratory procedures used and whether the technique is considered partial or total. Metallurgical Samples The assaying technique utilised a lithium metaborate/lithium tetraborate (50/50) fusion melt followed by nitric acid dissolution with the resulting solution analysed by ICP OES/MS. This technique is considered to be 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. No data has been reported of this type. Nature of quality control procedures adopted (e.g. standards, blanks, duplicates, external laboratory checks) and whether acceptable levels of accuracy (i.e. lack of bias) and precision have been established. Metallurgical Samples No QAQC samples were utilised by Viking. The metallurgical laboratory inserted blanks and standards which contained WO3 grades similar to Viking’s assayed samples’ WO3 head grades. This achieved acceptable levels of accuracy and removed bias. Verification of sampling and assaying The verification of significant intersections by either independent or alternative company personnel. Not applicable, no drilling being reported. The use of twinned holes. Not applicable, no drilling being reported. Documentation of primary data, data entry procedures, data verification, data storage (physical and electronic) protocols. Metallurgical Samples Samples are bagged in calico bags and assigned a sample number from a ticket book. Sample details are recorded in a spreadsheet and then uploaded into Viking’s Maxwell Datashed database. Discuss any adjustment to assay data. No adjustment is made to the assay data. 8 ASX:VKA | OTC:VKALF | vikingmines.com Criteria JORC Code explanation Commentary Location of data points Accuracy and quality of surveys used to locate drillholes (collar and downhole surveys), trenches, mine workings and other locations used in Mineral Resource estimation. Metallurgical Samples No drilling being reported. Sample locations provided are the approximate area where the samples were collected from. The composite sample collected for each area is composed of loose rocks collected from within an approximate 15m radius of the reported sample coordinate (refer ASX announcement 14 January 2026). Specification of the grid system used. The adopted grid system is NAD83/UTM Zone 11N and all data are reported in these coordinates. Quality and adequacy of topographic control. Publicly available LiDAR data from the USGS is at 1m accuracy and considered of a high quality and has been used to determine the elevation of the samples collected. Data spacing and distribution Data spacing for reporting of Exploration Results. Not applicable. Whether the data spacing and distribution is sufficient to establish the degree of geological and grade continuity appropriate for the Mineral Resource and Ore Reserve estimation procedure(s) and classifications applied. Not applicable. Whether sample compositing has been applied. Metallurgical Samples Sample assay results have not been composited. Physical samples collected are considered composite samples via the collection of multiple loose rocks from each sample location to provide sufficient material for the metallurgical testwork programme. Orientation of data in relation to geological structure Whether the orientation of sampling achieves unbiased sampling of possible structures and the extent to which this is known, considering the deposit type. Metallurgical Samples Unknown, the mineralisation sampled was not in-situ. If the relationship between the drilling orientation and the orientation of key mineralised structures is considered to have introduced a sampling bias, this should be assessed and reported if material. Not applicable, no drilling being reported. Sample security The measures taken to ensure sample security. Metallurgical Samples Samples were collected in the field by Viking geologists and personally delivered to Base Met Labs in Tucson, Arizona. Audits or reviews The results of any audits or reviews of sampling techniques and data. The Company has conducted no audits or reviews of the sampling techniques and data. 9 ASX:VKA | OTC:VKALF | vikingmines.com JORC 2012 Table 1, Section 2 - Reporting of Exploration Results Criteria JORC Code explanation Commentary Mineral tenement and land tenure status Type, reference name/number, location and ownership including agreements or material issues with third parties such as joint ventures, partnerships, overriding royalties, native title interests, historical sites, wilderness or national park and environmental settings. Tenements and location The USA Tungsten Project Lode Mineral Claims are located in the state of Nevada in the USA. Details of the Mineral Claims are presented in the table below: Project State County Type Holder Quantity Linka Nevada Lander Unpatented BLK Group LLC 10 Viking Tungsten LLC 91 Alpine Nevada Pershing Unpatented BLK Group LLC 4 Long Nevada Pershing Unpatented BLK Group LLC 4 Viking Tungsten LLC 12 Ragged Top Nevada Pershing Unpatented BLK Group LLC 8 Viking Tungsten LLC 30 Terrell Nevada Nye Unpatented BLK Group LLC 10 Viking Tungsten LLC 56 Victory Nevada Nye Unpatented Kircher Mine Development LLC 8 Third Party Interests Viking Mines Ltd has signed a binding term sheet to acquire a 100% interest in the project BLK Group LLC Mineral Claims and currently holds no ownership. Viking can acquire 100% interest in the claims by paying a total of US$2.88M over a staged 7 year period. BLK group will retain a 2% NSR on all minerals recovered from mineral claims, and Viking retains the option to buy down 1% of the NSR for US$2M. Native Title, Historical sites and Wilderness There are no known registered historical sites over the Project Mineral Claims. The Mineral Claims are registered with the Bureau of Land Management. The Linka Project has split federal agency responsibility with the Bureau of Land management managing approximately half of the claims and the US Forestry Service the other half. All the remaining projects fall under the jurisdiction of the BLM. The security of the tenure held at the time of reporting along with any known impediments to obtaining a licence to operate in the area. The tenements are held in good standing by BLK Group LLC. All annual claim payments are up to date. There are no known impediments to obtaining a licence to operate in the area. The US process is to file either a notice of intent or Plan of Operations to the responsible Federal Agency to obtain permits for drilling. The Company does not know of any reason why these permits would not be granted once the process if followed and the required bond payment made. Exploration done by other parties Acknowledgment and appraisal of exploration by other parties. Linka Mine: The area was staked in 1941 by Steve Linka of Austin, NV. In 1943-44, the mine produced 2,420 tons of ore averaging 0.69% WOз. Consolidated Uranium Mines purchased the property in 1953, sunk a vertical shaft to 210 feet and drove approximately 1,000 feet of drifts and cross-cuts on the 150’ level. Additional production included; 4,000 tons of ore averaging 0.98% WOз between 1951 and 1956 and 60,000 tons averaging 0.40% WOз between 1955 and 1956. The mine closed when the Government buying program ended. Mine workings include a 100’ X 50’ open-pit 25 feet deep, a 210’ shaft with approximately 1,500 feet of drifts and cross-cuts. Shrinkage stopes extend from the 150’ level to the surface (Stager and Tingley, 1988). In 1951, the Linka Mine was optioned to Hugh Chesser, Reno, NV. Hugh Chesser estimates shipments to Metals Reserve Corporation during WWII totalled 2,673 tons averaging 0.72 percent WOз. 10 ASX:VKA | OTC:VKALF | vikingmines.com Criteria JORC Code explanation Commentary Cache Creek Exploration held the properties in the early 1970’s and conducted geological and geophysical programs. Duval Corporation optioned the properties in the mid-1970’s, did geological studies but no drilling. Min-Ex drilled the property in 1977-78, with a total of 73 drillholes recorded (eight DDH and 64 wide-spread percussion drillholes). Note: Not all drillhole locations have been established, with 69 holes digitised and 1 hole estimated (total 70) and three percussion holes with unknown location. Exploration activity completed by Minex included drilling, surface and underground geological mapping and sampling, minor geophysical magnetic survey with 10,400 linear feet collected (inconclusive results), 6,500ft of bulldozer trenching and mapping. Stager and Tingley, 1988 estimate total production at the Linka mine at 25,670 units WOз (1943-56). Linka-Conquest Mine: The mine was discovered in 1941 but did not start production until 1943 when Gale Peer sunk a two-compartment inclined shaft to 130 feet. Workings off the shaft were at the 50 and 100 foot levels. During WW II mined and shipped 390 tons of ore averaging 2.7% WOз. Additional shipments after the War averaged over 1.0% WOз, but the tonnage is unknown. Last work on the 100’ level exposed a zone 40’ long, 12’ to 20’ wide, open to the northeast with a grade of <0.4% WOз. Stager and Tingley, 1988, estimate total production at 5,208 units WOз (1944-56). Stager and Tingley, 1988 estimate total production at the Conquest mine to be 5,208 units WOз (1944-56) Geology Deposit type, geological setting and style of mineralisation Linka Project: The area is underlain primarily by sedimentary rocks; it includes an outcrop of massive limestone of Ordovician age (Upper Plate) overlain in thrust contact by chert and shale of Ordovician Vinini Formation (Lower Plate). The limestone is intruded locally by granitic rocks of Jurassic age, and the tungsten deposits occur in the limestone along the granite contact (Stager and Tingley, 1988) Linka-Conquest Mine - Granite intrusive rocks (Jg) and aplite dikes intrude cherts, shales and limy members of the Vinini Formation (Ov) in the Upper Plate of the Roberts Mountain Thrust. Scheelite-bearing skarn formed at the contact. Miocene age Bates Mountains tuff (Tbm) covers any extension of the mineralization to the northeast. Linka Mine - Scheelite occurs in lenses and tabular masses of skarn at the contact between Ordovician Antelope Valley Limestone (Lower Plate of the Roberts Mountain Thrust) and granitic intrusive rocks. The contact zone is cut by igneous dykes and high-angle faults. Exposures are poor. Granite rocks west of the contact zone are covered by post-mineral volcanic rock and sediments of Big Smokey Valley. Antelope Valley limestone east of the contact zone is nearly vertical. The contact zone is about 40 feet wide. Drilling in the 1970’s shows that, at depth, the contact zone may flatten to the east, then steepen. Scheelite, with traces of chalcopyrite and molybdenite are the only ore minerals recognized. Linka-Hillside - The Hillside incline shaft is about half way between the Conqu