Sunstone Metals Ltd · ASX:STM

Sunstone Metals — Resource Rising Stars Investor Conference 2023

23 slides from Sunstone Metals's conference presentation, May 17, 2023

  1. Slide 1: Rising Stars Investor Conference

    SUNSTONE(Q) METALS RISING STARS UTAINAY SUAAINS Dn = a w< INVESTOR CONFERENCE STM 17 May 2023

  2. Slide 2: Disclaimer

    Disclaimer DISCLAIMER FORWARD-LOOKING STATEMENTS To the maximum extent permitted by law, no representation, warranty or This Presentation includes certain statements that may be deemed undertaking, express or implied, is made and, to the maximum extent “forward-looking statements”. All statements in

  3. Slide 3: Sunstone Snapshot

    Sunstone Snapshot Ecuador focussed, gold-copper explorer and discoverer ASX - STM Market Capitalisation 1 A$98.6 mill Cash reported March 31 A$5.0 mill Funds raised (net) May 13 A$11.4 mill Equities A$0.4 mill Shares on Issue 3,082 million Top 20 Shareholding ~40% Institutional and Family Office Sha

  4. Slide 4: Investment Opportunity

    Investment Opportunity • Simple proposition – discovery adds significant shareholder value • The Sunstone team has a track record of globally significant copper-gold porphyry discovery • Tujuh Bukit, Indonesia (2008) • Alpala, Cascabel, Ecuador (2013) • The Sunstone team is now delivering a high dis

  5. Slide 5: Ecuador

    Ecuador • Support for responsible mining Capital Quito • Responsible mining and exploration contributing significantly to FDI, taxes, Population 17.8 million employment, infrastructure, communities, environmental studies and management Multiparty republic with one legislative house Form Of Governmen

  6. Slide 6: ESG considered across the business

    ESG considered across the business Sunstone appreciates the strong community support that it has at its projects and takes its environmental, social and governance issues very seriously. It is committed to advance its social performance in the areas where we work Sunstone is aiming to produce its in

  7. Slide 7: Bramaderos, Southern Ecuador

    Bramaderos, Southern Ecuador Brama-Alba hill Espiritu core processing facility Iron horse used for transporting equipment Espiritu core processing facility • 4,984ha concession • Adjacent to the Pan American Highway • At ~900m asl • Multiple gold-copper and gold-silver targets within the concession

  8. Slide 8: Bramaderos – rich with gold-copper-silver targets

    Bramaderos – rich with gold-copper-silver targets LIMON - Outcropping gold-copper porphyry and epithermal 97.6m at 0.71g/t gold and 0.23% copper in trench LMDD010 in 2022 delivered 79m at 0.52g/t gold, 0.19% copper, 9.4g/t silver (0.9g/t AuEq) from 90m LMDD017 in 2023 delivered 177m at 0.97g/t gold,

  9. Slide 9: Brama-Alba – initial Mineral Resource estimate

    Brama-Alba – initial Mineral Resource estimate JORC Tonnage Au Cu (%) Ag (g/t) AuEq AuEq* Classification (Mt) (g/t) (g/t) (Mozs) Indicated 9 0.38 0.09 1.1 0.53 0.2 Inferred 147 0.35 0.11 1.3 0.53 2.5 Total 156 0.35 0.11 1.3 0.53 2.7 - Due to the effect of rounding, the total may not represent the su

  10. Slide 10: Brama-Alba – mineralisation from surface

    Brama-Alba – mineralisation from surface 1.6 km Alba Hills in background Brama • View looking NE; December 2022 • 1.2km long mineralised system – so far • Outcropping gold-copper • Development would initially mine a hill – very low strip ratio • Higher grade domains close to surface • Many opportuni

  11. Slide 11: Brama-Alba – opportunities for higher grade domains

    Brama-Alba – opportunities for higher grade domains • BMDD034 – intersected 202m at 0.86g/t AuEq close to surface at Alba • BMDD008 – intersected 302m at 0.73g/t AuEq close to surface at Brama • BMDD012 – intersected 111m at 2.35g/t gold from 93m, including 7.2m at 27g/t gold from 124.8m at Alba For

  12. Slide 12: Bramaderos – initial Exploration Target

    Bramaderos – initial Exploration Target 3.3 to 8.6Mozs AuEq – in addition to the MRE Comprising 2.1 to 6.6Mozs gold 255 to 432kt of copper 11 to 15Mozs silver Within 255 to 360Mt of mineralised rock At grades of between 0.35 and 0.8g/t AuEq Our aim is to grow the Bramaderos inventory to 10Mozs AuEq

  13. Slide 13: Limon – view to NE

    Limon – view to NE Area of epithermal mineralisation Hills in background 13

  14. Slide 14: Limon – gold-silver epithermal

    Limon – gold-silver epithermal o LMDD017 - 176.7m at 1.1g/t AuEq* (0.97g/t gold and 10.1g/t silver), from 6.8m. o Epithermal gold-base metal vein identified in hole LMDD020 at 665m Hills in background o Large search space for epithermal gold-silver- base metal mineralisation o Follow-up drilling is

  15. Slide 15: El Palmar, northern Ecuador

    El Palmar, northern Ecuador • Highly prospective belt of rocks related to the Toachi Fault Zone • To date includes the >2.7Bt Alpala copper-gold porphyry deposit at Cascabel, the >0.53Bt Tandayama-America copper-gold porphyry deposit at Cascabel, and the >1Bt Llurimagua copper-moly porphyry deposit

  16. Slide 16: El Palmar; T1-T2-T3-T5 relationships

    El Palmar; T1-T2-T3-T5 relationships • Mineralisation from surface at T1, T2, and T5 • 2.6km long cluster of porphyry targets identified to date; T1 to T5 • Targets could all be related and have geometries that relate to their position on or adjacent to the Toachi fault, and subsidiary orthogonal fa

  17. Slide 17: El Palmar; T1 T2 T3 T5 gold-copper targets

    El Palmar; T1 T2 T3 T5 gold-copper targets T1 target; original discovery in 2021 • Gold-copper porphyry deposit mineralised from surface • Hole EPDD001 intersected • 163.6m at 0.71g/t gold and 0.2% copper from 52.35m, within • 480.9m at 0.41g/t gold and 0.15% copper from 11.3m • Hole EPDD021 drilled

  18. Slide 18: El Palmar; T2-T3 relationships

    El Palmar; T2-T3 relationships • Targets could all be related and have geometries that relate to their position on or adjacent to the Toachi fault • Drilling of hole EPDD026 suggests that T3 is related to the deep portion of T2 18

  19. Slide 19: What’s ahead

    What’s ahead ✓ Bramaderos • Limon gold-silver discovery – follow-up to LMDD017 and LMDD020 – will fundamentally change Bramaderos • Drill to grow Exploration Target • Drill to convert Exploration Target to Mineral Resources, and demonstrate higher grade ‘front end’ optionality for a development • De

  20. Slide 20: Competent Persons Statement

    Competent Persons Statement Competent Persons Statement The information in this report that relates to Mineral Resources is based on information compiled by Mr Aaron Meakin. Mr Aaron Meakin is a full-time employee of CSA Global Pty Ltd and is a Member and Chartered Professional of the Australasian I

  21. Slide 21: About Sunstone Metals

    About Sunstone Metals Sunstone has an advanced portfolio of exploration projects in Ecuador. The portfolio comprises: •The Bramaderos Gold-Copper Project where Sunstone owns an 87.5% interest with Cornerstone Capital Resources, a subsidiary of SolGold, holding 12.5% (see ASX announcement dated 10th

  22. Slide 22: Brama-Alba – initial Exploration Target

    Brama-Alba – initial Exploration Target Min. Tonnage Max. Tonnage Metal Content Metal Content Exploration Target (Mt) (Mt) Min. AuEq (Mozs) Max. AuEq (Mozs) Brama-Alba (excluding MRE areas) 70 100 0.79 2.57 Melonal 150 200 1.93 4.50 Limon 35 60 0.56 1.54 TOTAL 255 360 3.30 8.60 3.3 to 8.6Mozs AuEq M

  23. Slide 23: Call Email Web

    CALL EMAIL WEB ASX:STM +61 7 3368 9888 info@sunstonemetals.com.au sunstonemetals.com.au

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