St. George Mining Ltd. · ASX:SGQ
St. George Mining — IMARC, Sydney 2025
26 slides from St. George Mining's conference presentation, Oct 22, 2025
Slide 1: Niobium. Rare earths. World class.
IMARC, Sydney 22 October 2025 Niobium. Rare earths. World class.
Slide 2: Disclaimer
Disclaimer Forward-Looking Statements: This Presentation may include forward-looking statements. Forward-looking statements include, but are not limited to, statements concerning St George’s planned exploration program and other statements that are not historical facts. Although St George believes t
Slide 3: Araxá Project Investment Highlights
Araxá Project St George – aInvestment becomes global player inHighlights niobium and rare earths with the 100% acquisition of the advanced and de-risked niobium-REE Araxá Project in Minas Gerais, Brazil Advanced and de-risked world-class niobium-REE opportunity • JORC resource1 announced by St Georg
Slide 4: World class resource and location
World class resource and location ASX: SGQ | St George Mining Limited 4
Slide 5: World-class JORC resource
World-class JORC resource1 Globally significant niobium and rare earths deposits Niobium resource TREO resource 41.2 Mt at 0.68% Nb₂O₅ (6,800ppm Nb₂O₅) 40.6 Mt at 4.13% TREO (41,300ppm TREO) comprising (at a cut-off of 0.2% Nb₂O₅): comprising (at a cut-off of 2% TREO): Classification Million tonnes
Slide 6: Favourable location
Favourable location Outstanding project logistics support fast-track development MOSAIC Facilities St George’s ARAXÁ Project Favourable project logistics support expedited pathway to development: Located in Minas Gerais – a Tier 1 mining jurisdiction Mineralisation hosted in the 5km-wide Barreiro Ca
Slide 7: Favourable deposit characteristics
Favourable deposit characteristics Free-digging mineralisation from surface supports open-pit mine Grades up to 82,970ppm (8.29%) Nb₂O₅ and 329,800ppm (32.98%) TREO with results that include:1 43m @ 1.5% Nb2O5 from surface 60m @ 11.1% TREO from surface 20m @ 2.4% Nb2O5 from surface incl. 30m @
Slide 8: Expansion drilling underway
Expansion drilling underway +10,000m drilling program in progress • Auger drilling – first pass reconnaissance drilling 1km east of MRE has discovered a new high-grade rare earths zone with grades upto 13.4% TREO1 • 2,700m of RC drilling; mostly resource definition drilling to upgrade Inferred to In
Slide 9: Project delivery – highly experienced team
Project delivery – highly experienced team ASX: SGQ | St George Mining Limited 9
Slide 10: Project Delivery Team
Project Delivery Team In-country experts with combined +100 years experience Brazil Team Director, Corporate Development: Caue (Paul) Araujo Experienced natural resources executive, previous roles include Global Director, ESG and Technical Development: Thiago Amaral General Manager (Mine Finance) at
Slide 11: Supportive State Government
Supportive State Government MoU signed to expedite project approvals Expedited Licensing: St George on 30 October 2024 signed a non-binding Memorandum of Understanding with the State of Minas Gerais (Invest Minas) The State will assist with progressing regulatory approvals in an accelerated manner i
Slide 12: Community engagement
Community engagement St George contributes to the community The community in and around Araxá is experienced in the permitting of mining operations and working closely with mining companies Strong support shown for St George with aim of ensuring sustainable project development, long- term jobs St
Slide 13: Development partnerships
Development partnerships Processing, product development and marketing MagBras – Permanent magnet making facility in Brazil US strategic alliance St George is a first mover in Brazil’s emerging rare earths supply chain REAlloys Inc – a leading magnet materials maker in the US – to work making the fi
Slide 14: Critical metals with favourable market dynamics
Critical metals with favourable market dynamics ASX: SGQ | St George Mining Limited 14
Slide 15: Niobium – Future Facing Commodity
Niobium – Future Facing Commodity Essential for modern high-tech applications and weapons Niobium is produced into Ferroniobium (88% of demand) and Niobec Niobium oxide (12%)1 Quebec, Canada Ferroniobium Niobium Oxide 9% CMOC • Widely used in the steel • Niobium oxide is produced Goias, Brazil indus
Slide 16: Rare earths – fragile supply chains
Rare earths – fragile supply chains Geopolitical background creates opportunity for emerging producers outside China 6.0% Mountain Pass, Company St George Lynas MP Arafura MP.NYSE Market cap and A$277 million A$14.5 billion US$13billion A$505 million Operating 5.0% stock exchange ASX: SGQ ASX: LYC N
Slide 17: Development initiatives underway
Development initiatives underway Strong newsflow • Two mining concession applications and one exploration permit. Licencing progresses Permitting Process in 2025 and 2026 • Engagement with Government, community and licensing authorities. Q2 to Q4 2025 – new • St George commenced expansion and resour
Slide 18: Company Overview
Company Overview Led by an experienced Board, the share price has responded favourably to the Araxá acquisition Company Snapshot1 A$72.5 million fund raising announced in October 2025: ASX Code SGQ • A$50m institutional placement at A$0.10 per share; completed Share Price A$0.13 • A$22.5m strategic
Slide 19: St George Mining Limited
ST GEORGE MINING LIMITED Building a globally significant niobium-REE mining company ASX: SGQ | St George Mining Limited 19
Slide 20: Appendix A - References
Appendix A - References Slides 3 and 5: Slide 15 1. See our ASX Release dated 1 April 2025 entitled “High-Grade Niobim and REE 1. Mordor Intelligence, Global Niobium Market 2022-2029. JORC Resource for Araxa” for details on the JORC resource. Slide 16 Slide 6 For details of the chart and table of RE
Slide 21: Appendix B – Key Risks
Appendix B – Key Risks The future performance of the Company and the value of its shares may be influenced by a range of factors, many of which are largely beyond the control of the Company and its directors. Key risks associated with the Company’s business and the industry in which it operates as w
Slide 22: Appendix B – Key Risks (continued)
Appendix B – Key Risks (continued) The future performance of the Company and the value of its shares may be influenced by a range of factors, many of which are largely beyond the control of the Company and its directors. Key risks associated with the Company’s business and the industry in which it o
Slide 23: Appendix B – Key Risks (continued)
Appendix B – Key Risks (continued) The future performance of the Company and the value of its shares may be influenced by a range of factors, many of which are largely beyond the control of the Company and its directors. Key risks associated with the Company’s business and the industry in which it o
Slide 24: Appendix C – References to previous announcements
Appendix C – References to previous announcements This ASX announcement contains information extracted from the following reports • 5 March 2025 Niobium and Downstream Processing Study at Araxa which are available on the Company’s website at www.stgm.com.au: • 1 April 2025 High-grade Niobium and REE
Slide 25: Competent Person Statement
Competent Person Statement Competent Person Consent - MRE The information in this Presentation that relates to Mineral Resource Estimate and historical/foreign results is based upon, and fairly represents, information and supporting documentation reviewed and compiled by Mr. Beau Nicholls, a Compete
Slide 26: Competent Person Statement
Competent Person Statement Competent Person Consent - Historical and Foreign Results The information in this Presentation that relates to historical and foreign results is based upon, and fairly represents, information and supporting documentation reviewed by Mr. Carlos Silva, Senior Geologist emplo