27 slides from St. George Mining's conference presentation, Oct 22, 2025
Slide 1: ASX Release: St George at IMARC, Sydney
ASX RELEASE. 22 October 2025 St George at IMARC, Sydney St George Mining Limited (ASX: SGQ) (“St George” or “the Company”) is participating in the 2025 IMARC conference being held in Sydney this week. Attached is a copy of St George’s Presentation to the Conference. The Presentation showcases St Geo
Slide 2: Niobium. Rare earths. World class.
IMARC, Sydney 22 October 2025 For personal use only Niobium. Rare earths. World class.
Slide 3: 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 4: 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 For personal use only • JORC resource1
Slide 5: World class resource and location
World class resource and location For personal use only ASX: SGQ | St George Mining Limited 4
Slide 6: World-class JORC resource
World-class JORC resource1 Globally significant niobium and rare earths deposits Niobium resource TREO resource For personal use only 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): Classifi
Slide 7: Favourable location
Favourable location Outstanding project logistics support fast-track development MOSAIC St George’s For personal use only Facilities ARAXÁ Project Favourable project logistics support expedited pathway to development: Located in Minas Gerais – a Tier 1 mining jurisdiction Mineralisation hosted in th
Slide 8: 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 For personal use only 43m @ 1.5% Nb2O5 from surface 60m @ 11.1% TREO from surface 20m @ 2.4% Nb2O5 fr
Slide 9: 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 For personal use only • 2,700m of RC drilling; mostly resource definition drilling to
Slide 10: Project delivery – highly experienced team
Project delivery – highly experienced team For personal use only ASX: SGQ | St George Mining Limited 9
Slide 11: 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 Thiago Amaral For personal use only Director, ESG and Technical Development: General Man
Slide 12: Supportive State Government
Supportive State Government MoU signed to expedite project approvals For personal use only 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 a
Slide 13: Community engagement
Community engagement St George contributes to the community For personal use only 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 developmen
Slide 14: Development partnerships
Development partnerships Processing, product development and marketing MagBras – Permanent magnet making facility in Brazil US strategic alliance For personal use only St George is a first mover in Brazil’s emerging rare earths supply chain REAlloys Inc – a leading magnet materials maker in the US –
Slide 15: Critical metals with favourable market dynamics
Critical metals with favourable market dynamics For personal use only ASX: SGQ | St George Mining Limited 14
Slide 16: 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 For personal use only Quebec, Canada Ferroniobium Niobium Oxide 9% CMOC • Widely used in the steel • Niobium oxide is produc
Slide 17: 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 For personal use only MP.NYSE Market cap and A$277 million A$14.5 billion US$13billion A$505 million Operating 5.0% stock exchan
Slide 18: Development initiatives underway
Development initiatives underway Strong newsflow Licencing progresses For personal use only Permitting Process • Two mining concession applications and one exploration permit. in 2025 and 2026 • Engagement with Government, community and licensing authorities. Q2 to Q4 2025 – new • St George commence
Slide 19: 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: For personal use only ASX Code SGQ • A$50m institutional placement at A$0.10 per share; completed Share Price A$0.1
Slide 20: Building a globally significant niobium-REE mining company
For personal use only ST GEORGE MINING LIMITED Building a globally significant niobium-REE mining company ASX: SGQ | St George Mining Limited 19
Slide 21: 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. For personal use only Slide 16 Slide 6 For details of the
Slide 22: 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 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 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 25: 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 26: 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 27: 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