Capstone Copper Corp. · TSX:CS

Capstone Copper — Technical Presentation (June 2022)

25 slides from Capstone Copper's technical presentation, June 2022

  1. Slide 1: Corporate Exploration Update

    Corporate Exploration Update June 2022 CAPSTONE COPPER CORP. | TSX : CS Santo Domingo Project - Atacama, Chile

  2. Slide 2: Cozamin – 2022 In-Mine Exploration

    Cozamin – 2022 In-Mine Exploration MNV West – Below Historical Workings • MNV West Copper Target located down-dip of historical workings • 2021 drilling from surface San Rafael • 2022 drilling from surface & underground San Roberto • 37 holes for 39,800 meters (“m”) drilled at the Target from 2021 t

  3. Slide 3: Cozamin – 2022 Brownfields Exploration

    Cozamin – 2022 Brownfields Exploration 2022 Other Brownfield Targets – Proposed Surface Drilling N Vanadio System MNV Far West MNV Far East San Roberto San Rafael MNFWZ 1 km • MNV Far East and Vanadio will be drilled below historical workings that mined silver-rich portions of the epithermal system

  4. Slide 4: Santo Domingo Project – Brownfield

    A´ Santo Domingo Project – Brownfield Hm + Lim First Exploration Program Since 2012 – Opportunity to Expand Resource (mostly Fe, Co) • 8 holes tested VTEM geophysics anomaly confirming and extension of mineralized over 1.5 km* • Mineralization starts ~500m depth with lower grade (~0.1%CuT) copper an

  5. Slide 5: Santo Domingo Brownfield

    Santo Domingo Brownfield Oxide Opportunity With MV-SD District Integration Black CuOx • Oxide mineralization present at Santo Domingo could potentially be processed with the spare capacity of nearby Hm + Limonites Mantoverde electrowinning plant Black CuOx Chrysocola • Mineralization is located on t

  6. Slide 6: SD Oxide Mineral Resource – Plan Overview

    SD Oxide Mineral Resource – Plan Overview Q1 2022 Q2 2022 Q3 2022 Q4 2022 Q1 2023 Q2 2023 Q3 2023 Stage Gate Permitting Oxide Review Drilling Geo Mineral Model Resource Update Metallurgy Column Test Metallurgy Phase II and III Initial column tests to If metallurgical results Drill program to complet

  7. Slide 7: Santo Domingo Additional Brownfield Targets

    Santo Domingo Additional Brownfield Targets Iris Norte Near Mine Targets N E1 Target A (Cu-Co): target to test for Cu(-Co) zone between pits. Target B (Fe-Co-Cu): near surface Fe-Co(-Cu) mineralization in between limestone units lie partially inside planned pit, and D potentially could reduce strip

  8. Slide 8: Planalto Project – Pará, Brazil

    Planalto Project – Pará, Brazil Optioned from Lara Exploration Ltd. (“Lara”), part of the same management team that discovered Timok in Serbia. Lara operates Planalto. Why Carajás Mineral Province? • Prolific mining belt. Brazil’s largest producer of high-grade Fe + significant producer of Cu, Ni, M

  9. Slide 9: Planalto Project

    Planalto Project IOCG Target in the Carajás N Now 41 holes with a best hole of 341m from 13m @ 0.60% Cu including 108m @ 1.05 % Cu from 13m (true width uncertain) • Located along the same shear zones at the Sossego and Cristalino deposits • Simple access/infrastructure • IOCG variant - chalcopyrite

  10. Slide 10: Planalto Project

    Planalto Project Planalto 2021 Drill Hole Intercepts • 5 holes were completed on the Cupuzeiro target in 2021 and all have long intervals of >0.2% copper and sub-intervals of >0.4% Cu • 2 holes have >100m lengths of 1% copper • True widths are uncertain; both shallow and steep structures appear to c

  11. Slide 11: Planalto Project

    Planalto Project Early-stage Exploration • Coincident Cu in soil, magnetism and IP most favourable targets Cupuzeiro • Homestead deposit has been traced by drilling over an area of 350m by 700m and is all within 200m of surface • Cupuzeiro mineralization starts at surface over at least 175m by Untes

  12. Slide 12: Planalto Project Oblique Section - Cupuzeiro

    Planalto Project Oblique Section - Cupuzeiro Cu ppm A B 21-005 21-002 Cupuzeiro Target Compared to Homestead Target 21-003 21-004 • Oblique plans, sections, 3D view of Homestead and Cupuzeiro zones 21-001 • Horizontal and vertical structures appears to influence the higher grades at both Homestead a

  13. Slide 13: Copper Cities

    Copper Cities Geological mirror-image of Pinto Valley with same host rocks and age • Phase I completed in early-April 2022 (17,880 ft in 19 holes*) & Phase II completed in early-May 2022 (11,530 ft in 8 holes) • Proposed budget of $6.7M spread across two phases of drilling, initial metallurgical tes

  14. Slide 14: Near Mine Opportunities Mantos Blancos

    Near Mine Opportunities Mantos Blancos plan projection of targets from the bottom of the pit B 500m A Schematic cross section showing mineralization open at depth. Additional drilling required for conversion of inferred resources Near mine opportunities for adding additional oxides and sulphides res

  15. Slide 15: District Opportunity at Mantos Blancos

    District Opportunity at Mantos Blancos Outcropping Cu-Oxides 2 1 Target 2 Rosario 1 Target 1 10 km 3 km 2 Targeting Oxides to Utilize Excess SX-EW Plant Capacity • Rosario prospect is located 15 km south of the Mantos Blancos Mine. Limited exposures shows many mineralized outcrops. • Main targets su

  16. Slide 16: Evolution Resources Mantoverde

    Evolution Resources Mantoverde Exploration excellence delivered since current leadership took control Summary • Strong track record of Mineral Reserve and Mineral Resources growth via exploration. • Large near mine opportunities to continue expanding resource at depth, following mineralized structur

  17. Slide 17: Near Mine Opportunities at Mantoverde

    Near Mine Opportunities at Mantoverde Exploration Potential 11 reserve pit Celso Manto Ruso Oxides • Several near mine opportunities for expanding the current resource base 1 Sulphides along Mantoverde Fault and their subsidiaries Open Mineralization • Mineralization is open at depth in Santa Clara

  18. Slide 18: District Opportunities at Mantoverde

    District Opportunities at Mantoverde 5km Exploration Potential Paloma 2 • Large land-package along the Atacama Fault System with favorable potential for adding 4 oxides and sulphide mineralization • Exploration targeting is guided by magnetics and follows regional structural intersections 3 Las • Cu

  19. Slide 19: Appendix

    Appendix COPPER.

  20. Slide 20: Consolidated Estimated Mineral Resources

    Capstone Copper Consolidated Estimated Mineral Resources MINERAL RESOURCES – Inclusive of Mineral Reserves CONTAINED METAL TCu SCu Zn Pb Mo Ag Au Fe Co S Cu Zn Pb Mo Ag Au Fe3 Co3 Category kt % % % % % g/t g/t % ppm % kt kt kt kt koz koz kt kt Pinto Valley1 Measured 619,864 0.33 - - - 0.006 - - - -

  21. Slide 21: Consolidated Estimated Mineral Reserves

    Capstone Copper Consolidated Estimated Mineral Reserves MINERAL RESERVES CONTAINED METAL TCu SCu Zn Pb Mo Ag Au Fe Cu Zn Pb Mo Ag Au Fe3 Category kt % % % % % g/t g/t % kt kt kt kt koz koz Mt Pinto Valley1 Proven 241,620 0.34 - - - 0.007 - - - 831 - - 16 - - - 31-Mar-2021 Probable 139,382 0.28 - - -

  22. Slide 22: Cozamin – 2021–2022 Exploration

    Cozamin – 2021–2022 Exploration Current Results Table with Section ID’s Map In True Map In True DDH ID Vein ID From (m) To (m) Width (m) Cu % Zn % Pb % Ag g/t DDH ID Vein ID From (m) To (m) Width (m) Cu % Zn % Pb % Ag g/t ID 7 Resource Width (m) ID Resource Width (m) 1 CG-21-S538 MNV West no 992.1 9

  23. Slide 23: Planalto Project NSRs

    Planalto Project NSR´s (assuming buy-downs exercised) • Lara – Capstone, through Planalto Mineracao (Brazilian Company), can earn a 70% interest, with a 2% NSR, that can be bought down to 1% for $2M • Capstone has surpassed the minimum $1.5M expenditure and can optionally spend $5M to earn 49% (spen

  24. Slide 24: Cautionary Notes

    Cautionary Notes CAUTIONARY NOTE ON FORWARD LOOKING INFORMATION This document may contain “forward-looking information” within the meaning of Canadian securities legislation and “forward-looking statements” within the meaning of the United States Private Securities Litigation Reform Act of 1995 (col

  25. Slide 25: Cautionary Notes

    Cautionary Notes CAUTIONARY NOTE TO UNITED STATES INVESTORS REGARDING PRESENTATION OF MINERAL RESERVE AND MINERAL RESOURCE ESTIMATES As a British Columbia corporation and a “reporting issuer” under Canadian securities laws, we are required to provide disclosure regarding our mineral properties in ac

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