Orosur Mining Inc. · TSXV:OMI

Orosur Mining — Investor Presentation (May 2023)

22 slides from Orosur Mining's investor presentation, May 2023

  1. Slide 1: Investor Presentation

    Investor Presentation Webinar May 2023 SOUTH AMERICAN EXPLORER www.orosur.ca I TSXV:OMI / AIM:OMI 1

  2. Slide 2: Disclaimer

    Disclaimer This document has been issued by Orosur Mining Inc. (the “Company”). This document does not constitute or form part of any offer or invitation to sell or issue, or any solicitation of any offer to purchase or subscribe for, any securities of the Company, nor shall any part of it nor the f

  3. Slide 3: Corporate Snapshot

    Corporate Snapshot 12 Month Share Performance Directors and Management Name Position Louis Castro Director and Executive Chairman Brad George Director and CEO Thomas Masney Non-Executive Director Capital Structure and Key Metrics (15th May 2023) Nick Von Schirnding Non- Executive Director Basic Shar

  4. Slide 4: Investment Case

    Investment Case • Strong balance sheet – circa $4m in cash • Three quality projects: • Balance from advanced to early stage • Gold and battery metals • Flagship Anzá gold project in Colombia. JV with Newmont and Agnico. • Early stage El Pantano gold project in Argentina. Major epithermal system iden

  5. Slide 5: Anzá Project

    Anzá Project 5

  6. Slide 6: Anzá – late Miocene mid-Cauca belt

    Anzá – late Miocene mid-Cauca belt • Primary gold belt in Colombia. • Host to multiple giant gold deposits. • Most sit within a narrow N-S structural corridor. • All porphyry-epithermal systems 6

  7. Slide 7: Anzá – leases and applications

    Anzá – leases and applications • Large land holding of +200km2 • 20km strike of main structure • Mostly in the one municipality – mining friendly • Rugged terrain but good infrastructure • Conversions and integrations delayed. 7

  8. Slide 8: Mineralized trend

    Mineralized trend • 20km strike of Aragon fault • Work started at APTA in 2012 (Waymar Resources) • Over 30,000m drilled at APTA • Mapping and sampling show most of trend is mineralised • Drilling at Pepas began mid 2022 – spectacular results in early holes. • Southern regions not yet drilled 8

  9. Slide 9: APTA Prospect

    APTA Prospect • Discovered in 2012 underneath gypsum mine. • Hybrid VMS/Epithermal system • Over 30,000m of drilling • Several high-grade plunging shoots. • Structurally complex • Could be converted to resource, but not a priority for JV partners. 9

  10. Slide 10: Pepas Drilling – unresolved target.

    Pepas Drilling – unresolved target. • First target to be drilled outside APTA – mid 2022 • First holes returned bonanza hits from surface • 150.9m @ 3g/t Au • 80.55m @ 3g/t Au • 36.85m @ 2.85g/t Au • Drill pad inside mineralisation – could not resolve dip. • Later drilling from wrong side, drilled u

  11. Slide 11: JV Status – where are we now?

    JV Status – where are we now? • Phase 1 completed in Sept 2022 – over $10m spent • MMA notify of intention to move to Phase 2 - $20m over 4 years • $2m option payment made to Orosur in Jan/Feb 2023. • Commercial restructuring underway • MMA then indicate change in priorities, work stops at Anzá. Car

  12. Slide 12: Anzà options – where to next?

    Anzà options – where to next? Option 1 - Maintain status quo. Continue with restructuring and recommence work once complete. Option 2 – MMA sells its 51% stake. • Must complete restructure first. • New buyer must adhere to JV agreement. Option 3- Orosur reassumes control of Anzá. • Purchase stake fr

  13. Slide 13: Other Projects

    Other Projects Two other projects -same selection criteria: • Earlier stage, grass roots • Large land holdings • Endowed region • Clear signs of mineralisation or mineralising processes • Low or zero entry cost • Low cost for early years • Ability to advance quickly and cheaply • Provides options 13

  14. Slide 14: Brazil - Ariquemes

    Brazil - Ariquemes The Opportunity • Huge land holding • Untouched • Downstream infrastructure means low size hurdle • Optionality The Challenge • No modern exploration ever undertaken • Need to start from scratch 14

  15. Slide 15: Brazil – Ariquemes Tin

    Brazil – Ariquemes Tin • Large land holding (3,000km2) • Mining friendly region. • $3m over 4 years to earn 75%. • Key but unloved energy metal • Supply is fragile, ESG compliant supply more so. • Major tin producing province but under exploited and explored. • Other metals not exploited. • Mining i

  16. Slide 16: Ariquemes – Regional Sampling

    Ariquemes – Regional Sampling • Completed regional stream sampling over whole project 5x10km grid • Widespread anomalism identified. • Provide vectors for followup. • Assessing both Tin and Niobium • Planning next field program 16

  17. Slide 17: Ariquemes – next phase

    Ariquemes – next phase Old workings stop at lease boundary • Examining both alluvial and hard rock potential • Historical workings are a key vector • Can only do definitive work on granted titles • If positive, could define mineralized material quickly. • May examine near term development options 17

  18. Slide 18: Argentina – El Pantano

    Argentina – El Pantano Opportunity • Large land holding in key region (600km2) • Evidence of massive epithermal system. • Largely unexplored • Ability to earn 100% • Data sharing with majors. • Optionality Challenge • Little previous work. • Must start from scratch • Huge system, how do we focus? 18

  19. Slide 19: Low sulphidation system

    Low sulphidation system • Deseado Massif – world class district. Underexplored • Litho-structural controls well understood - Jurassic volcanics and major NW-SE structural corridor. • Low-sulphidation epithermal model • Cerro-Negro analogue – rifting system. • Boiling is key depositional mechanism •

  20. Slide 20: El Pantano – what attracted us?

    El Pantano – what attracted us? • First time the lease package has been consolidated • Regional mag data shows major NW-SE rift system • Mapping shows extensive areas of silicification and alteration – clear hot spring system • Previous company only did superficial work. • Surrounding prospects show

  21. Slide 21: El Pantano – first phase

    El Pantano – first phase • Ground magnetic surveys to define structural corridor • Soil geochemistry to map anomalous gold and pathfinders (Hg and As) • Extensive geological mapping to discover vein fields. • Map major structures • Assessing texture of silicification to determine level in system. Wi

  22. Slide 22: Summary – next 6 months

    Summary – next 6 months • Resolve Anzà. • Field program in Ariquemes aimed at defining mineralized zones. • If positive, move to define size and examine options • Complete current program at El Pantano. Interp over winter. • Return in Sept to extend work and develop drill targets. 22

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