Meridian Mining Plc · TSX:MNO

Meridian Mining — Investor Presentation (December 2025)

14 slides from Meridian Mining's investor presentation, Dec 21, 2025

  1. Slide 1: Espigão Project: Large Scale Copper-Gold Potential

    ESPIGÃO PROJECT LARGE SCALE COPPER-GOLD POTENTIAL meridianmining.co MNO MRRDF N2E

  2. Slide 2: Cautionary Note Regarding Forward-Looking Statements

    C AUTIONARY N OTE R EGARDING F ORWARD - LOOKING S TATEMENTS This presentation does not constitute or form a part of, and should not be construed as an offer, solicitation or invitation to subscribe for, underwrite or otherwise acquire, any securities of Meridian Mining plc (“Meridian”), nor shall it

  3. Slide 3: Espigão Project: Large Scale Copper-Gold Potential

    ESPIGÃO PROJECT LARGE SCALE COPPER-GOLD POTENTIAL meridianmining.co MNO MRRDF N2E 3

  4. Slide 4: Espigão

    E SPIGÃO ESPIGÃO PROJECT IOCG / Intrusive-related targets established: diverse vein / breccia system associated with Proterozoic A-type granite complex • Auriferous quartz-pyrite veins • Extensive manganese / iron oxide breccia systems at surface: • Interpreted to be a high-level expression of deepe

  5. Slide 5: Intrusive / IOCG Exploration Model

    E SPIGÃO I NTRUSIVE / IOCG EXPLORATION M ODEL A diversity of vein styles and hydrothermal alteration are Iron Oxide / Copper / Gold / evident across the project Manganese Oxide / Tin / REE The Company’s preferred model is that the metals form part of a progressive event, assemblages reflecting differ

  6. Slide 6: Conceptual Geological Model

    E SPIGÃO C ONCEPTUAL G EOLOGICAL M ODEL INTRUSION RELATED POLYMETALLIC MINERAL EMPLACEMENT • Tectonic activity creates pathways (A) for hot intrusive body into local area (B) • Hydrothermal fluids (C) rise mixing with surface derived fluids (D) creating alteration halos and precipitating a multi eleme

  7. Slide 7: Recent Exploration

    E SPIGÃO R ECENT E XPLORATION • Iron Oxide-Copper-Gold (“IOCG”) type deposits host the giant Cu-Au mines of Brazil and some of the biggest Cu-Au mines internationally. e.g. Salobo and Olympic Dam • Espigão hosts the prospective geochemistry comparable to large-scale IOCG/Intrusive type deposits • Fi

  8. Slide 8: Geophysical Exploration Results

    E SPIGÃO G EOPHYSICAL E XPLORATION R ESULTS Magnetic Anomaly Magnetic Anomaly Gravity Anomaly Gravity Anomaly Amplitude Amplitude Amplitude Amplitude Units nT km Mgal Km Espigão Project 500 Open 15 Open Deposit Olympic Dam 1,400 8 km across 17 8 km across Wirrda Well 1,800 6 * 9 km 6 6 * 9 km Carapa

  9. Slide 9: IOCG / Intrusive Targets in Brazil - Salobo

    E SPIGÃO IOCG / I NTRUSIVE T ARGETS IN B RAZIL - S ALOBO The Salobo mine is the largest copper deposit ever discovered in Salobo - Mineral Resources @ 0.25 %CuEq Cut off grade Brazil. Tonnage Cu Au Contained Cu Contained Au Category Mineralization at the Salobo deposit is hosted by upper- (Mt) (pct)

  10. Slide 10: IOCG / Intrusive Targets in Brazil - Sossego

    E SPIGÃO IOCG / I NTRUSIVE T ARGETS IN B RAZIL - S OSSEGO The Sossego Mine Complex consists of two open-pit mines, Sossego - Mineral Resources @ 0.25 %CuEq Cut off grade Sossego and Sequeirinho, located in the Carajás region in the southeastern portion of Pará State in Brazil. Category Tonnage Cu Au

  11. Slide 11: An Under-Explored Intrusive System

    E SPIGÃO A N U NDER -E XPLORED I NTRUSIVE S YSTEM AIRBORNE GEOPHYSICS RESULTS1 COMBINED WITH SURFACE & DDH DATA • Surface Mineralisation is co-incident with the subsurface projection of conductors modelled from electromagnetic survey data. Results point to a much more intricate architecture to the i

  12. Slide 12: History

    E SPIGÃO H ISTORY LICENCES PACKAGE CONSOLIDATED OVER 2014 – 2015 FROM THREE SEPARATE ENTITIES: • Cancana Resources / Rio Madeira Comércio e Exportação de Minérios / Eletroligas 2019 EXPLORATION REFOCUSED ON POLYMETALLIC POTENTIAL: • Processing of airborne Geophysics • Regional Soils program identifi

  13. Slide 13: Tenure

    E SPIGÃO T ENURE THE ESPIGÃO PROJECT HOSTS AN ADVANCED LICENCE POSITION • One approved mining licence • Six mining licence applications • Other licences active or with renewal applications pending • Some licences that were once part of the project are under relinquishment • The licence package is be

  14. Slide 14: Espigão Project

    ESPIGÃO PROJECT LARGE SCALE COPPER-GOLD POTENTIAL Meridian Mining plc Gilbert Clark Email: info@meridianmining.net.br Corporate Address: Chief Executive Officer 8th Floor 4 More London, Riverside, London, United Kingdom, SE1 2AU meridianmining.co MNO MRRDF N2E 14

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