Announcement PDF ASX Announcement 16 June 2026 ASX: OD6 1 LOW IMPURITY RESULTS SUPPORTS PREMIUM CLEAN METSPAR AND ACIDSPAR PRODUCTS AT QUINN PROJECT HIGHLIGHTS Following the receipt of multi-element results at Horseshoe and Mammoth: • Impurity levels are below typical global industry thresholds, underpinning strong potential for a premium metspar product without prior processing at Horseshoe • Both Horseshoe and Mammoth deposits demonstrate an exceptional pre-processing impurity suite, most notably: o Lead and other base metals very low, for a raw fluorspar feed compared to other deposits - presenting low risk of groundwater contamination o Sulphur well below global industry thresholds - presenting low acid mine drainage risk o Arsenic and cadmium at trace to non-detectable levels - reducing environmental risk and downstream processing risk o Phosphate within acidspar tolerances o Uranium and thorium below detection limits, minimising radionuclide risk o Potential deleterious elements are low compared to contaminants at other deposits in Mexico, US, Europe and China. • High grades of >70% average CaF2 grade in Horseshoe with low deleterious elements or pollutants provides strong potential for Direct Shipping Ore (DSO) for a MetSpar Product • With low deleterious elements or pollutants Horseshoe and Mammoth have the potential to be upgraded to AcidSpar (>97%) using ore-sorting and simple flotation • New metallurgical testwork samples have been received at a metallurgical laboratory and are due for commencement of analyses • Sulphur levels significantly below industry norms reduce acid-generating waste risk, providing tangible environmental and permitting advantages Managing Director Brett Hazelden, commented: “These results reinforce our belief that Quinn has the potential to become one of the highest-grade fluorspar projects in North America. Not only are we seeing exceptional fluorspar grades, particularly at Horseshoe, but we are also seeing remarkably low levels of impurities that commonly attract penalties or create processing challenges at many fluorspar operations globally. 2 The ability to potentially produce a Direct Shipping Ore MetSpar product from Horseshoe, while also maintaining a pathway to higher-value AcidSpar products through conventional flotation techniques, provides significant flexibility for future development. Importantly, the low level or absence of problematic elements such as uranium, thorium, sulphur, arsenic and elevated base metals supports our view that Quinn could become a strategically important domestic source of fluorspar for the United States at a time when western governments are seeking secure critical mineral supply chains for the growing industry.” OD6 Metals Limited (ASX: OD6) (“OD6” or “the Company”) is pleased to report the multi-element results from fluorspar bearing samples from the Horseshoe and Mammoth deposits, part of the exciting Quinn Fluorspar Project located in Nevada, USA. Acidspar and Metspar Fluorspar (also known as fluorite) is a simple mineral with the formula CaF2, which contains 48.9% fluorine by weight. Fluorspar is the main mineralogical source of fluorine. High-grade fluorspar mineralisation is typically upgraded through simple processing to produce concentrates known as Acidspar, and Metspar. MetSpar is a mineral product containing >60% fluorspar (CaF2) and is sold to the steel industries as a fluxing agent. As a fluxing agent, the MetSpar improves slag fluidity, remove impurities, lower the melting temperature, protect refractory materials and to enhance high-end stainless steel products. MetSpar typical needs to be: • >60% CaF2 • less than 5,000ppm lead (Pb) • less than 3,000ppm sulphur (S) AcidSpar is an upgraded mineral product containing >97% fluorspar (CaF2) and is sold to the chemical industry for hydrofluoric acid production, and ultimately is used in the nuclear fuels industry, battery technologies, solar panels, defence technologies and AI chip manufacturing. AcidSpar specifications typically need to be: • >97% CaF2 • <1.5% silica (SiO2), • <10-20ppm arsenic, • <1,000ppm sulphur (S) • <100-550ppm phosphorous (P). • Penalties or refusal are potentially applied for high lead (Pb) and other base-metals (Cu, Zn, Mo), and pollutants such cadmium, chromium or any radioactive elements such as uranium or thorium. Reviewed testwork suggests that Quinn mineralisation has the potential to produce both Metspar and premium Acidspar products, depending on processing configuration and optimisation (refer release dated 20 May 2026). A modern metallurgical testwork programis due to commence shortly, with extensive representative samples now collected from across the project, which have now received at the laboratory in Australia. The program includes optical ore sorting with TOMRA and flotation optimisation with Core Resources. 3 Pricing of MetSpar is on a contract basis, and dependent on quality and CaF2 content. A 60-90% product has an indicated price of US$400 to $520 per tonne dependent on quality and grade. AcidSpar, as a superior product, is currently priced around US$560 per tonne (ChemAnalyst 2026). The United States currently imports 100% of its fluorspar requirements and classifies fluorspar as a critical mineral. The combination of high grades, low contaminant levels and Nevada location positions Quinn as a potential future domestic supplier into strategic US industrial, chemical, defence and advanced manufacturing markets. Comparison to other deposits worldwide Arsenic, lead (and base-metal) and uranium content in fluorspar vary considerably depending on deposit type and the presence of associated minerals. As the source of fluorspar is commonly epithermal systems, many deposits contain background levels of base-metals, arsenic and sulphur. At Las Cuevas, San Luis Potosí, Mexico — the world's largest fluorite producer — arsenic is a recognised processing constraint, with concentrate typically containing around 300 ppm arsenic (Alberto et al, 2023), while earlier deposit-scale sampling reported arsenic concentrations ranging from below detection to over 2,000 ppm (Ruiz et al., 1980). Arsenic presents a key risk in the contamination of soil and water at Las Cuevas (Godoy, 2025). Lead (Pb) presents at other major global fluorspar operations: the Silius deposit in Sardinia, Italy, described as Europe's largest fluorite deposit, hosts reserves grading 3.2% Pb (32,000 ppm) alongside 34.5% CaF2, reflecting its classification as a fluorite- galena system (Cirinei, 2025). Processing of high lead ores requires a separate circuit to reduce risk in a co- mingled product. Many Chinese fluorspar deposits are similarly hosted in systems containing pyrite and barite alongside fluorite (Yang et al., 2026), consistent with the well-established association between arsenic, lead and sulphide minerals in hydrothermal/epithermal systems (Boyle and Jonasson, 1973), though specific published assay values for major Chinese fluorspar-producing deposits were not identified in the available literature. Excessive pyrite and other sulphide minerals potentially increase the risk of acid mine drainage. Uranium is also a recognised contaminant at some major fluorspar districts. The Lost Sheep property in the Spor Mountain district (Ares Strategic Mining Ltd), Utah — a significant fluorspar-beryllium-uranium province — fluorspar mineralisation has been reported to contain between 0.003-0.33% U (30-3,300 ppm), with grade varying considerably across the project (Puritch et al., 2021). By comparison, Horseshoe and Mammoth, as noted below, contain very low concentrations of base-metals, arsenic, sulphur and radio-nuclides reducing the risk to the environment and the need for specialist circuits to remove and contain deleterious elements. 4 Horseshoe Fluorspar – already meeting the requirements for MetSpar The Company recently received multi-element assay results from 20 samples collected in February at Horseshoe. The fluorspar content of these samples was announced on 15 April 2026 with a peak value of 82% CaF2 and an average of all samples of 70.9% CaF2. As noted in Table 1, the material in the Horseshoe Pit, sampled to date, already exceeds the minimum CaF₂ specification generally associated with MetSpar products and demonstrates potential for a Direct Shipping Ore (DSO) style product, subject to further metallurgical, mining and economic studies. Simple lump / fine crushing, with potential need for optical ore-sorting on lower grade zones, are all that is potentially required prior to sale of this product. To upgrade to an AcidSpar product the potential contaminants are also very low and achieve the minimum standards even prior to upgrade. The only exception is arsenic, which whilst low for an epithermal system averages 23ppm (versus 10-12ppm requirement). However, in absence of sulphur, carbonates are the likely a sink for arsenic in epithermal environments (Bia et al, 2021), which can be removed in the upgrade procedure. Therefore, an upgrade using ore-sorting and flotation, to remove silica and carbonates is the most likely path to an AcidSpar Product (Rutledge & Anderson, 2010). Flotation is a well established simple technique. With low-sulphur content, it is unlikely that stockpiles, mullock dumps or tailings will be acid producing, reducing future environmental issues. Table 1: Horseshoe multi-element test results of raw material (20 channel samples before test-work) versus requirements for MetSpar and AcidSpar. Ca% (not attributed to CaF2) refers to calcium not accounted for in the fluorine stochiometric equation-this is most likely calcium carbonates). Average results from 20 samples. PP = not specified requirement, but potential penalty. Raw Horseshoe (pre-processing) MetSpar Requirements AcidSpar Requirements Horseshoe - Raw ore material for MetSpar Horseshoe - requirements to achieve AcidSpar CaF2% 70.9 >60% 97% PASS Processing to upgrade ~70% to 97% Ca % (not attributed CaF2) 8.3 - PP PASS CaCO3 monitored in AcidSpar. To be supressed in flotation Pbppm 3.75 <5000 PP PASS PASS Znppm 8.6 - PASS PASS Cuppm 1 - - PASS PASS Moppm 9.5 - - PASS PASS As ppm 23.4 - <10-20 PASS Low levelsin raw ore material; unlikely to be a factor once upgraded Cdppm <0.5 - PP PASS PASS Cr ppm 2.9 - PP PASS PASS P ppm 407.5 - <100-550 PASS PASS S ppm 130 <3000 <1000 PASS PASS Th ppm <20 - - PASS PASS U ppm <10 - - PASS PASS Al2O3 % 0.39 - - PASS PASS Fe2O3 % 0.39 - - PASS PASS P2O5 % 0.09 - PP PASS PASS SiO2 % 8.89 - <1.5 PASS SiO2 to be supressed in flotation 5 Mammoth Fluorspar – low impurity fluorspar The Company recently received multi-element assay results from 12 channel samples collected in February. The fluorspar content of these samples was announced on 9 April 2026 with a peak value of 53.2% CaF2 and an average of all samples of 40.8% CaF2. Similarly to Horseshoe, results indicate very low deleterious elements and potential contaminants as noted in Table 2. The carbonate content is also considerably lower at Mammoth compared to Horseshoe, though does have a higher silica content. To upgrade to a Metspar product, the Company will pursue investigations into a coarse crush / lump ore-sorting process to achieve around 20% mass reduction in silica content and bring the product to >60%. In order to achieve, an AcidSpar product, the upgrading procedure is likely to include ore-sorting and flotation of fluorspar. Therefore, an upgrade using ore-sorting and flotation, to remove silica and carbonates is the most likely path to an AcidSpar Product (Rutledge & Anderson, 2010). Flotation is a well-established simple technique. With low-sulphur content, it is unlikely that stockpiles, mullock dumps or tailings will be acid producing, reducing future environmental issues. Table 2: Mammoth multi-element test results of raw material (average of 12 channel samples before test-work) versus requirements for MetSpar and AcidSpar. Average results from 12 samples. Ca% (not attributed to CaF2) refers to calcium not accounted for in the fluorine stochiometric equation-this is most likely calcium carbonates). PP = not specified requirement, but potential penalty. Raw Mammoth (pre processing) MetSpar Requirements AcidSpar Requirements Mammoth - Raw ore material for MetSpar Mammoth - requirements to achieve AcidSpar CaF2% 40.8 >60% 97% Processing to upgrade from40% to >60% Processing to upgrade ~40% to 97% Ca % (not attributed CaF2) 2.0 - PP PASS CaCO3 monitored in AcidSpar. Can be supressed in flotation Pbppm 5.5 <5000 PP PASS PASS Znppm 5.9 - PASS PASS Cuppm 3 - - PASS PASS Moppm 1.9 - - PASS PASS As ppm <0.5 - <10-20 PASS PASS Cdppm <0.5 - PP PASS PASS Cr ppm 12.1 - PP PASS PASS P ppm 142 - <100-550 PASS PASS S ppm <100 <3000 <1000 PASS PASS Th ppm <20 - - PASS PASS U ppm 10 - - PASS PASS Al2O3 % 1.01 - - PASS PASS Fe2O3 % 0.57 - - PASS PASS P2O5 % 0.03 - PP PASS PASS SiO2 % 38.1 - <1.5 PASS SiO2 to be supressed in flotation 6 Figure 1: Quinn Fluorspar Project with, deposit locations, background geology and alteration map (refer release dated 25 March 2026 for further information) 7 NEXT PHASE METALLURGICAL PROGRAM OD6 is advancing a staged metallurgical testwork program to validate and optimise processing flowsheets . Existing data establishes a significant metallurgical foundation, potentially reducing the scope and cost of future metallurgical programs required to support development studies at Quinn Recent OD6 field programs have collected extensive metallurgical samples across multiple prospects at Quinn ready for modern day metallurgical testing. • Samples to be sent for optical ore sorting testwork with TOMRA (Germany) o Upgrade feed grade prior to processing o Reduce processing costs and plant size o Assess reject/waste separation efficiency o OD6 expects the TOMRA testwork to commence this quarter, with results to be available in quarter 3 • Additional metallurgical flotation testwork with Core Resources (Australia) o Flotation optimisation o Dense media separation o Grind size and reagent testing o Product specification validation (Acidspar vs Metspar) o OD6 expects the flotation testwork to commence this quarter, with results anticipated to be available in in the second half of the year • OD6 to apply for bulk sample permits across multiple areas to support advanced metallurgical testwork o Provide representative material for pilot-scale testing o Support flowsheet development o Generate potential offtake samples for customers References: Bia, G., et al (2021). Arsenic in natural carbonates: the role of biogeochemical conditions in its solid speciation. Chemical Geology. Vol. 583. Boyle, R.W., & Jonasson, I.R., 1973. The geochemistry of arsenic and its use as an indicator element in geochemical prospecting. Journal of Geochemical Exploration, 2(3), pp. 251–296. Cirinei, S., 2025. Unlocking Silius' geological potential: reserves upgrading of Europe's largest fluorite deposit. Presentation, Fluorine Forum 2025, Baveno, Italy, 22–24 October 2025. Mineraria Gerrei Srl. ChemAnalyst (2026) Fluorspar Price Trend and Forecast for the quarter ending March 2026 https://www.chemanalyst.com/Pricing-data/fluorspar-1470 Godoy, E., (2025) Fluorite: Mexico is a key player in a lesser-known critical mineral. Fluoride Action Network. https://fluoridealert.org/news/fluorite-mexico-is-a-key-player-in-a-lesser-known-critical-mineral/ Oregon Group (2024) https://theoregongroup.com/investment-insights/fluorspar-the-ev-critical-mineral-no- one-has-heard-of/ 8 Puritch, E., Sutcliffe, R.H., Brown, F.H., Salari, D.J., & Czarnowsky, A., 2021. Technical Report on the Lost Sheep Fluorspar Property, Juab County, Utah, U.S.A. (NI 43-101 & 43-101F1). P&E Mining Consultants Inc., Report 402, for Ares Strategic Mining Inc. Ruiz, J., Kesler, S.E., Jones, L.M., & Sutter, J.F., 1980. Geology and geochemistry of the Las Cuevas fluorite deposit, San Luis Potosi, Mexico. Economic Geology, 75(8), pp. 1200–1209. Rutledge, J., & Anderson, C.G., (2015) Tannins in Mineral Processing and Extractive Metallurgy. Metals Vol. 5(3) Skillen, A,, 1993 Fluorspar producers; Cracks in the Chinese wall?: Industrial Minerals, no. 307, April, p. 36-49. Alberto, J, Garcia, J., Castillo, I.S.D, Robles, N.M. (2023) US Patent 11,639,302. Process for reducing the concentration of arsenic in an aqueous solution comprising a fluoroacid. Yang, T.Y., Shen, Y.L., Lu, L., Jin, J., Huang, W., Li, F.Y., Zhang, Y.F., Hu, J.C., & Zeng, L.J., 2026. Mineralogy and geochemistry of the Xiaotunxiang fluorite deposit in Guizhou Province, SW China, and their geological significance. Minerals, 16(3), 227. Forward Looking Statements Certain information in this document refers to the intentions of OD6 Metals, however these are not intended to be forecasts, forward lookingstatements, or statements about the future matters for the purposes of the Corporations Act or any other applicable law. Statements regarding plans with respect to OD6 Metals projects are forward lookingstatements and can generally be identified by the use of words such as ‘project’, ‘foresee’, ‘plan’, ‘expect’, ‘aim’, ‘intend’, ‘anticipate’, ‘believe’, ‘estimate’, ‘may’, ‘should’, ‘will’ or similar expressions. There can be no assurance that the OD6 Metals plans for its projects will proceed as expectedand there can be no assurance of future events which are subject to risk, uncertainties and other actions that may cause OD6 Metals actual results, performance, or achievements to differ from those referred to in this document. While the information contained in this document has been prepared in good faith, there can be given no assurance or guarantee that the occurrence of these events referred to in the document will occur as contemplated. Accordingly, to the maximum extent permitted by law, OD6 Metals and any of its affiliates and their directors, officers, employees, agents and advisors disclaim any liability whether direct or indirect, express or limited, contractual, tortuous, statutory or otherwise, in respect of, the accuracy, reliability or completeness of the information in this document, or likelihood of fulfilment of any forward-looking statement or any event or results expressed or implied in any forward-looking statement; and do not make any representation or warranty, express or implied, as to the accuracy, reliability or completeness of the information in this document, or likelihood of fulfilment of any forward-looking statement or any event or results expressed or implied in any forward-looking statement; anddisclaim all responsibility and liability for these forward-looking statements (including, without limitation, liability for negligence). 9 Competent Persons Statements The information in this ASX release that references chemical and metallurgical properties is as reviewed by Mr Brett Hazelden (Managing Director and CEO) of OD6 Metals Ltd. Mr Hazelden is a Member of the AusIMM has sufficient experience relevant to hydrometallurgical processes and mineral processing to qualify as a Competent Person as defined by the JORC Code. Mr Hazelden owns shares in the Company and participates in the Company’s employee securities incentive plan. Mr Hazelden consents to the inclusion in this announcement of the matters based on his information in the form and context in which it appears. Information in this report relatingto sampling is based on information compiledby Dr Darren Holden who is a Fellow of the Australasian Institute of Mining and Metallurgy. Dr Holden is an employee of GeoSpy Pty Ltd and is a geological advisor to the Company and has sufficient experience which is relevant to the style of mineralisation and type of deposit under consideration and to the activity which he is undertaking to qualify as a Competent Person as defined by the 2012 Edition of the Australasian Code for reporting of Exploration Results, Mineral Resources and Ore Reserves. Dr Holden owns shares in the Company and participates in the Company’s employee securities incentive plan. Dr Holden consents to the inclusion of the data in the form and context in which it appears. No new information Except where explicitly stated, this announcement contains references to prior exploration results, all of which have been cross-referenced to previous market announcements made by the Company. The Company confirms that it is not aware of any new information or data that materially affects the information included in the relevant market announcements. The information in this report relating to the Mineral Resourceestimatefor the Splinter Rock Project is extracted from the Company’s ASX announcements dated 18 July 2024. OD6 confirms that it is not aware of any new information or data that materially affects the information included in the original announcement and that all material assumptions and technical parameters underpinning the Mineral Resource estimate continue to apply. This announcement has been authorised for release by the Board of OD6 Metals Limited 10 About OD6 Metals OD6 Metals Ltd is an Australian critical minerals exploration and development company with projects spanning fluorspar, rare earth elements and copper across the United States and Australia. OD6 aims to position itself as an emerging supplier of strategically important critical minerals required for next-generation industrial, defence and energy technologies. Quinn Fluorspar Project – Nevada, USA OD6 is advancing the Quinn Fluorspar Project located in Nevada, USA, one of the world’s premier mining jurisdictions and currently ranked second globally in the Fraser Institute 2025 Mining Attractiveness Index. Quinn hosts multiple high-grade fluorspar deposits including Horseshoe, Mammoth and Big Jim, with historical drilling, channel sampling and testwork confirming significant high-grade mineralisation and potential for both Metspar and premium Acidspar products. Fluorspar is classified as a critical mineral in the United States, which currently imports 100% of all Fluorspar consumed domestically with >60% of all global supply sourced from China. It is essential in hydrofluoric acid production, AI semiconductor manufacturing, advanced battery technologies, uranium enrichment, defence systems and refrigerants. Splinter Rock Rare Earth Project – Western Australia OD6’s 100% owned Splinter Rock Rare Earth Project in Western Australia hosts one of Australia’s largest and highest-grade clay-hosted rare earth deposits, with a Mineral Resource Estimate of: • Indicated: 119Mt @ 1,632ppm TREO • Inferred: 563Mt @ 1,275ppm TREO OD6 is advancing an innovative processing flowsheet utilising heap leaching, nanofiltration and ion exchange technologies designed to achieved ~75% Nd & Pr overall recovery plus produce a high-quality Mixed Rare Earth Carbonate/Hydroxide product of ~56-59% TREO with low impurity levels Gulf Creek Copper Project – New South Wales OD6 is also advancing the Gulf Creek Copper-Zinc VMS Project in New South Wales, a historically high-grade copper mining district with significant exploration upside. Recent drilling and geophysical programs have confirmed high-grade copper mineralisation and identified multiple large- scale exploration targets along more than 10km of prospective strike. Corporate Directory Managing Director Non-Executive Chairman Non-Executive Director Financial Controller/ Joint Company Secretary Joint Company Secretary Technical Advisor to the Board Contact OD6 Metals Ltd ACN 654 839 602 www.od6metals.com.au Mail to: info@od6metals.com.au Phone: +61 8 6189 8515 Level 1, 1 Alvan Street, Subiaco, WA 6008 Mr Brett Hazelden Mr Piers Lewis Dr Mitch Loan Mr Troy Cavanagh Mr Joel Ives Dr Darren Holden Investor Relations Lucas Robinson Corporate Storytime lucas@corporatestorytime.com Phone: +61 408 228 889 ASX Announcement 16 June 2026 ASX: OD6 11 Table 3: Sample results from Horseshoe Channel Sampling (refer press release dated 15 April 2026 for original release on CaF2 results) SampleID CaF2 % Pb (ppm) Zn (ppm) Cu (ppm) Mo (ppm) As (ppm) Ca (ppm) Cd (ppm) Cr (ppm) P (ppm) S (ppm) Th (ppm) U (ppm) Al2O3 % Fe2O3 % P2O5 % SiO2 % Easting Northing zQC260202 70.08 2 3 1 1 6 467000 -0.5 2 120 100 -20 -10 0.2456 0.143 0.0275 4.7062 615609 4220476 zQC260203 79.94 6 15 2 17 41 429000 -0.5 4 460 200 -20 10 0.7936 0.7863 0.1054 10.4821 615609 4220477 zQC260204 81.99 2 4 1 8 8 446000 -0.5 2 350 100 -20 10 0.6613 0.1573 0.0802 5.7758 615613 4220485 zQC260205 70.90 6 10 1 22 38 394000 -0.5 4 420 100 -20 -10 0.6235 0.8721 0.0962 16.8997 615613 4220486 zQC260206 70.28 3 4 1 7 16 405000 -0.5 3 390 100 -20 10 0.4913 0.3717 0.0894 16.8997 615613 4220487 zQC260207 74.19 6 6 1 10 18 398000 -0.5 5 670 100 -20 10 0.7747 0.5004 0.1535 17.1136 615614 4220488 zQC260208 72.95 6 13 1 18 29 425000 -0.5 3 450 100 -20 10 0.5668 0.6577 0.1031 11.7656 615614 4220489 zQC260209 70.49 9 16 1 15 43 375000 -0.5 5 710 100 -20 10 0.8692 1.0008 0.1627 17.7554 615615 4220490 zQC260210 71.10 4 4 1 14 5 496000 -0.5 3 150 100 -20 -10 0.2456 0.1573 0.0344 3.8506 615616 4220491 zQC260214 56.72 2 7 1 4 16 481000 -0.5 2 340 100 -20 -10 0.1134 0.2145 0.0779 3.4227 615623 4220503 zQC260215 67.82 3 9 -1 5 16 490000 -0.5 2 250 100 -20 10 0.1323 0.2002 0.0573 3.6366 615623 4220502 zQC260216 60.01 -2 3 -1 3 11 500000 -0.5 2 310 100 -20 10 0.1134 0.143 0.071 2.781 615624 4220501 zQC260217 66.38 4 8 1 5 36 498000 -0.5 2 410 200 -20 10 0.1701 0.3431 0.094 4.9202 615625 4220500 zQC260218 55.90 -2 3 1 2 10 475000 -0.5 1 240 100 -20 -10 0.1323 0.143 0.055 2.3531 615625 4220500 zQC260219 78.50 3 7 1 3 23 485000 -0.5 2 360 100 -20 -10 0.1134 0.2573 0.0825 4.4923 615626 4220499 zQC260220 79.73 7 17 2 12 55 441000 -0.5 5 770 200 -20 -10 0.3968 0.4861 0.1765 10.696 615627 4220498 zQC260221 77.27 4 11 2 7 34 457000 -0.5 2 390 200 -20 -10 0.1512 0.386 0.0894 4.2784 615628 4220498 zQC260222 71.51 5 13 1 20 27 409000 -0.5 3 590 200 -20 10 0.5102 0.4003 0.1352 12.6213 615628 4220497 zQC260223 71.72 4 15 2 12 28 436000 -0.5 3 540 200 -20 -10 0.6424 0.386 0.1237 10.696 615629 4220496 zQC260224 70.49 3 4 1 5 8 431000 -0.5 3 230 100 -20 10 0.2456 0.2859 0.0527 12.8352 615630 4220496 AVERAGE 70.90 3.75 8.6 1 9.5 23.4 446900 -0.5 2.9 407.5 130 -20 1 0.40 0.39 0.09 8.90 ASX Announcement 16 June 2026 ASX: OD6 12 Table 4: Sample results from Mammoth channel sampling (refer press release dated 7 April 2026 for original release on CaF2 results) SampleID CaF2 % Pb (ppm) Zn (ppm) Cu (ppm) Mo (ppm) As (ppm) Ca (ppm) Cd (ppm) Cr (ppm) P (ppm) S (ppm) Th (ppm) U (ppm) Al2O3 % Fe2O3 % P2O5 % SiO2 % Easting Northing zQC260238 26.41 3 5 2 1 5 137500 -0.5 13 110 100 -20 10 0.907 0.4861 0.0252 45.1371 617868 4223656 zQC260239 44.39 3 7 2 2 -5 240000 -0.5 11 70 100 -20 10 0.6235 0.5004 0.016 36.1525 617868 4223657 zQC260240 54.05 7 5 7 1 -5 308000 -0.5 7 90 100 -20 10 0.6802 0.4146 0.0206 29.0931 617868 4223658 zQC260241 48.29 5 8 4 1 -5 277000 -0.5 8 120 100 -20 -10 1.266 0.5004 0.0275 34.4411 617868 4223659 zQC260242 47.47 4 5 2 2 -5 265000 -0.5 10 170 100 -20 -10 0.6613 0.4861 0.039 31.6602 617868 4223660 zQC260243 47.27 3 2 2 3 -5 261000 -0.5 15 50 100 -20 -10 0.548 0.5004 0.0115 33.3715 617868 4223661 zQC260244 39.46 6 4 4 3 -5 219000 -0.5 15 90 -100 -20 10 0.907 0.4432 0.0206 38.0778 617868 4223662 zQC260245 39.05 6 7 4 4 -5 214000 -0.5 12 70 -100 -20 10 0.8125 0.5719 0.016 42.9979 617868 4223663 zQC260246 39.35 9 7 3 1 5 227000 -0.5 14 250 -100 -20 10 1.4171 0.6148 0.0573 38.9334 617868 4223664 zQC260247 36.58 10 6 3 2 12 216000 -0.5 12 250 100 -20 10 1.3982 0.8292 0.0573 38.5056 617868 4223665 zQC260248 34.42 7 10 2 1 11 199000 -0.5 13 270 -100 -20 10 1.8517 0.8578 0.0619 42.784 617868 4223666 zQC260249 32.98 4 5 1 2 -5 190000 -0.5 16 170 -100 -20 10 1.2093 0.6863 0.039 46.6346 617868 4223667 AVERAGE 40.81 5.58 5.91 3 1.91 -0.58 229458 -0.5 12.16 142.5 16.66 -20 5 1.02 0.57 0.03 38.15 ASX Announcement 16 June 2026 ASX: OD6 13 JORC 2012 – Table 1: Quinn Fluorspar Project Section 1 Sampling Techniques and Data (Criteria listed in the preceding section also apply to this section) Criteria JORC Code explanation Commentary Sampling techniques • Nature and quality ofsampling (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 shouldnotbe takenas limitingthe broad meaning of sampling. • Include reference to measures taken to ensure sample representivity and the appropriate calibrationofany measurement tools or systems used. • Aspects ofthe determination ofmineralisation that are Material to the Public Report. • In cases where ‘industrystandard’ work has been done this would be relatively simple (eg ‘reverse circulationdrilling was used to obtain 1 m samples from which 3 kgwas pulverised toproduce a 30 g charge for fire assay’). In other cases more explanationmay 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 • Channel samples are chip-channels, where a line is marked out and a representative sample is collected with a geological hammer from1mintervals along the line. Drilling techniques • Drill type (eg core, reverse circulation, open-hole hammer, rotary air blast, auger, Bangka, sonic, etc) and details (eg core diameter, triple or standard tube, depth of diamond tails, face- samplingbitor other type, whether core is oriented and if so, by what method, etc). • No drilling reported Drill sample recovery • Method ofrecordingand 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 andwhether sample bias may have occurred due to preferential loss/gain of fine/coarse