Announcement PDF MULTIPLE GOLD DISCOVERIES, GHANA Noosa Mining Conference July 2025 ASX: CDT | castleminerals.com DISCLAIMER Cautionary Statement: This presentation does not constitute investment advice. Neither this presentation nor the information contained in it constitutes an offer, invitation, solicitation or recommendation in relation to the purchase or sale of shares in any jurisdiction. This presentation does not take into account any person's particular investment objectives, financial resources or other relevant circumstances and the opinions and recommendations in this presentation are not intended to represent recommendations of particular investments to particular persons. All securities transactions involve risks, which include (among others) the risk of adverse or unanticipated market, financial or political developments. To the fullest extent permitted by law, Castle Minerals Limited (“Castle” or “the Company”) does not make any representation or warranty, express or implied, as to the accuracy or completeness of any information, statements, opinions, estimates, forecasts or other representations contained in this presentation. No responsibility for any errors or omissions from this presentation arising out of negligence or otherwise is accepted. Forward Looking Statement: Statements regarding Castle’s plans, forecasts and projections with respect to its mineral properties and programmes are forward-looking statements. There can be no assurance that Castle’s plans for development of its mineral properties will proceed. There can be no assurance that Castle will be able to confirm the presence of Mineral Resources or Ore Reserves, that any mineralisation will prove to be economic or that a mine will be successfully developed on any of Castle’s mineral properties. The performance of Castle may be influenced by a number of factors which are outside the control of the Company, its Directors, staff or contractors. Forward looking statements are only predictions and are subject to risks, uncertainties and assumptions which are outside the control of Castle. These risks, uncertainties and assumptions include commodity prices, currency fluctuations, economic and financial market conditions in various countries and regions, environmental risks and legislative, fiscal or regulatory developments, political risks, project delay or advancement, approvals and cost estimates. Actual values, results or events may be materially different to those expressed or implied in this presentation. Given these uncertainties, readers are cautioned not to place reliance on forward looking statements. Any forward-looking statements in this presentation speak only at the date of issue of this presentation. Subject to any continuing obligations under applicable law and the ASX Listing Rules, Castle does not undertake any obligation to update or revise any information or any of the forward-looking statements in this presentation or any changes in events, conditions or circumstances on which any such forward looking statement is based. Exploration Results & Mineral Resource Estimate – No New Information or Data: This presentation contains references to exploration results and Mineral Resource estimates, all of which have been cross-referenced to previous market announcements by the Company. Castle confirms that it is not aware of any new information or data that materially affects the information included in the original market announcements. Competent Person Statement: The scientific and technical information in this release that relates to the geology of the deposits and exploration results is based on information compiled by Mr Stephen Stone, who is Executive Chairman of Castle. Mr Stone is a Member of the Australian Institute of Mining and Metallurgy and has sufficient experience which is relevant to the style of mineralisation and type of deposit under consideration and to the activity which he is undertaking to qualify as a Competent Person as defined in the 2012 Edition of the ‘Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves’. Mr Stone is the Qualified Person overseeing Castle’s exploration projects and has reviewed and approved the disclosure of all scientific or technical information contained in this release that relates to the geology of the deposits and exploration. The Company confirms that all material assumptions underpinning the Mineral Resources and any forecast information continue to apply and have not materially changed. Further information on Castle and its Ghana projects and Minerals Resources can be found on its website at www.castleminerals.com which contains copies of all continuous disclosure documents to ASX, Competent Persons’ Statements and Corporate Governance Statement and Policies. Market and Industry Data: This presentation includes market share information and industry data and forecasts which have been obtained from independent industry publications. Although these sources are believed to be reliable, no independent verification of the data has been made nor the underlying economic assumptions relied upon therein ascertained. Third-party sources generally indicate that they have obtained their information from sources believed to be reliable, but do not guarantee the accuracy and completeness of such information. It is believed that the market and industry data presented throughout this presentation is accurate, but no assurance as to the accuracy or completeness thereof is provided. Castle cannot and does not provide any assurance as to the accuracy or completeness of such included information. Market forecasts, in particular, are likely to be inaccurate, especially over long periods of time. Please refer to ASX and company website www.castleminerals.com for ASX releases pertaining to the contents of this presentation. ASX: CDT | 2 CASTLE MINERALS COMPELLING WEST AFRICAN GOLD EXPLORATION STORY Premier African gold postcode Competitive advantage Extensive tenure Track record Ghana is Africa’s leading gold producer and a stable, long-established mining jurisdiction The most active company exploring within Ghana’s the highly prospective northern region Over 2,000km2 covering two separate flagship projects; one of the largest landholdings in West Africa Executive Chairman Steve Stone previously built Azumah Resources in Ghana to a +1Moz gold reserve Active exploration programmes Back-to-back RC and auger drilling campaigns across multiple prospects into 2026 and beyond ASX: CDT | 3 WEST AFRICA THE WORLD’S PREMIER GOLD REGION 37 Operating gold mines 17 Moz pa production 15 +2Moz discoveries since 2012 15% global gold production 70+ Moz gold reserves ASX: CDT | 4 GHANA STABLE, SAFE, MINING FRIENDLY Premier gold postcode Largest African gold producer and sixth largest globally, with long-established gold framework and infrastructure Home to numerous gold ‘whales’ Major producers include Newmont, Goldfields, AngloGoldAshanti, Zijin, Perseus and Shandong Regulatory stability Long-standing and stable democratic governance and English common-law judicial system Infrastructure and industrial development “Big push” initiative – US$10b infrastructure investment plan aimed at growth and sustainable development ASX: CDT | 5 FLAGSHIPS TWO HIGHLY PROSPECTIVE GOLD PROJECTS Kpali • • • • • A new West African gold exploration camp Blind discovery – previously unexplored Several zones of demonstrated mineralisation Numerous shallow high-grade intercepts 9.8km of drilling completed to date Kandia • • • • Opportunity for substantial mineralisation across multiple deposits 16km prospective corridor Adjacent to pre-development Black Volta Gold Project 2.9km of drilling completed to date ASX: CDT | 6 KPALI GOLD PROJECT NEW GOLD DISTRICT Blind discovery – no previous exploration Convergence of 2 fertile greenstone belts and 3 regional-scale structures associated with major gold deposits Successive drilling programmes deliver high-grade, shallow gold mineralisation Numerous satellite targets to be explored Converging greenstone belts and structures of Bole-Bolgatanga shear #1 53km Hosts 5.10Moz Namdini & 1.3Moz Youga deposits #2 30km of Batie West shear Hosts 3.3Moz Konkera deposit #3 15km of Wa-Lawra shear / Jirapa fault Hosts 1.4Moz Kunche / Bepkong / Yagha deposits ASX: CDT | 7 KPALI GOLD PROJECT EXPLORATION SUCCESSES 23 RC drill holes for 2,793m completed June 2025 Successful extension of major lodes along strike and to depth Numerous follow up targets NOTABLE INTERCEPTS1 1m at 20.66 g/t Au 19m at 2.93g/t Au From 41m (25KPRC018) From 77m (25KPRC024) 7m at 2.22 g/t Au 12m at 3.52 g/t Au From 178m (25KPRC025) From 138m (25KPRC026) 6m at 2.8 g/t Au 9m at 3.47g/t Au From 19m (25KPRC029) From 5m (25KPRC035) Refer CDT ASX releases 2 July 2014, 17 September 2024, 13 February 2025 and 16 June 2025 ASX: CDT | 8 KPALI GOLD PROJECT MULTIPLE LODES June 2025 RC campaign successfully extended major lodes along strike Hole 24KPRS010 successfully tested for northern extensions of hangingwall lode One follow-up hole above and two below confirmed: Wide, high-grade hangingwall lode; Well developed, persistent footwall lode; and Considerable mineralisation from surface to >120m depth Follow-up drilling September 2025 and into 2026 to better delineate and extend lodes Refer CDT ASX releases 2 July 2014, 17 September 2024, 13 February 2025 and 16 June 2025 ASX: CDT | 9 KPALI GOLD PROJECT MINERALISATION EXTENDED 10 Refer CDT ASX releases 2 July 2014, 17 Sept 2024, 13 February 2025 and 16 June 2025 ASX: ASX: CDT CDT | 10 KPALI GOLD PROJECT REGIONAL PROSPECTIVITY Bundi Prospect (4km north of Kpali Project) Grass roots auger and RAB discovery over 1.4km strike Mineralisation in Birimian shales and sediments 6m at 3.32g/t Au from 37m (13SWRC027) 2m at 9.09g/t Au from 68m (13SWRC032) 1m at 51.03g/t Au from 168m (13SWRC040) 4m at 2.38g/t Au from 30m (13SWRC045) Kpali East Prospect (400m east of Kpali Project) Drilling confirmed 400m strike, near-surface mineralisation 3m at 1.44g/t Au from 0m (13SWRB926) Refer CDT ASX releases 2 July 2014, 17 September 2024, 13 February 2025 and 16 June 2025 ASX: CDT | 11 ENDEAVOUR MINING ASSAFOU DISCOVERY ASSAFOU (COTE D’IVOIRE) 120KM SW OF KPALI 2016: Small drilling campaign 2018: Initial geochemical survey 2022: Discovery confirmed and maiden resource 2023: Resources increased 2024: PFS (329,000oz/annum). DFS underway Kpali SIMILAR GEOLOGICAL SETTING TO KPALI Hosted in meta-sandstones. Proximal to intrusives Assafou RESERVES & RESOURCES: Reserves: 72.8MT at 1.76G/T Au (4.1Moz) Resources: 73.6Mt at 1.95g/t Au (4.6Moz) DISTRICT SCALE Several other structurally-controlled prospects hosted in preferential meta-sandstone lithology Refer: Endeavour LSE & TSX release 11 December 2014 ASX: CDT | 12 WA EAST REGION TARGET RICH FAVOURABLE STRUCTURAL SETTING Analogous to many West African and Australian structurallycontrolled, orogenic gold prospects BROADSCALE GEOCHEMICAL ANOMALISM Highlights fertility of Birimian-dominated terrain MULTIPLE PROSPECTS Opportunity for large tonnages across several deposits STRATEGIC POSITIONING Proximal to pre-development Black Volta Gold Project 2.80Moz MRE at 1.7g/t Au1,2 1.37Moz Ore Reserve at 1.8g/t Au 1//ibaera.com/project-news/black-volta-gold-project-ghana/ 2Refer Ibaera 1 September 2024 and Azumah Resources ASX release 2 July 2014 ASX: CDT | 13 KANDIA GOLD PROJECT 16KM OF PROSPECTIVE SHEARED CONTACT LIES ON FERTILE BOLE-BOLGATANGA SHEAR SEVERAL ANOMALOUS ZONES IDENTIFIED ONLY 6KM OF ANOMALOUS STRIKE DRILL TESTED DRILLING HAS CONFIRMED GOLD EXTENDS TO DEPTH CORRIDOR EXTENDS INTO BLACK VOLTA’S JULIE DEPOSITS ASX: CDT | 14 KANDIA GOLD PROJECT DRILLING 4000 AND 8000 ZONES Refer ASX releases 28 Jan 2025 and 10 Jul 2025 ASX: CDT | 15 KANDIA GOLD PROJECT MINERALISATION AT DEPTH CROSS SECTION IN 4000 ZONE NOTABLE INTERCEPTS 7m at 3.36 g/t Au from 149m within 24m at 1.78g/t Au from 139m 5m at 3.49g/t Au from 82m within 11m at 2.26 g/t Au from 79m Refer ASX releases 28 Jan 2025 and 10 Jul 2025 ASX: CDT | 16 MANAGEMENT DISCOVERY TRACK RECORD Black Volta Gold Project (Azumah Resources) Castle Executive Chair Stephen Stone previously MD of Ghanafocussed Azumah Resources Explored and systematically grew the Black Volta Gold Project to a 1.1Moz Reserve Grew from a single minor prospect to multiple gold projects 517koz Bepkong deposit a “blind” discovery Black Volta’s 1Moz Julie deposit is immediately north of Castle’s Kandia Project Black Volta Project Summary Mineral Resource: 2.8Moz at 1.7g/t Au Ore Reserve: 1.4Moz at 1.8g/t Au Production Target: Mine Life: 150koz p.a 11 years 1https://azumahresources.com.gh/geology-and-resources/ 2Refer Ibaera 1 September 2024 and Azumah Resources ASX release 2 July 2014 ASX: CDT | 17 SOCIAL LICENCE Castle has operated successfully in Ghana’s Wa region since 2006. This success is founded upon: ACTING respectfully, transparently, inclusively and constructively HONOURING traditions, heritage and rural practices MAXIMISING local content, local employment, youth and women’s opportunities, training CONTRIBUTING water bores, medical facilities, infrastructure MINIMISING environmental impact and operational footprint, continuously rehabilitating and appropriately compensating COMPLYING with Ghana’s statutory laws and regulations eg EA1999 (L11652) & stringent in-country ESG regulations ADHERING to internationally recognised guiding policies: World Bank, IFC Environmental and Social Framework Guidelines ESS10; Equator Principles and International Labour Organisation recommendations ASX: CDT | 18 BOARD AND MANAGEMENT DEEP AFRICAN EXPERIENCE STEPHEN STONE: EXECUTIVE CHAIRMAN DAVID RENNER: DIRECTOR GHANA Extensive experience across exploration, operations, executive management and corporate development. Mining and geotechnical engineer with over 30 years experience within African mining sector. Former Managing Director of Azumah Resources Ltd, where he led the discovery of the 2.5Moz gold resource and 1.2Moz reserve Black Volta Gold Project in Ghana. Former Managing Director of AngloGold Ashanti (Induapriem) Ltd and Group General Manager, Business Development of Ashanti Gold Fields (Ghana) Ltd. BRIAN THOMAS: NON-EXECUTIVE DIRECTOR Highly regarded corporate executive with 35 years experience across corporate advisory, broking and investment banking. GEORGE ASAMOAH BOADU: SENIOR GEOLOGIST Former Chairman of Azure Minerals, where he oversaw the A$1.7bn sale of the company to Hancock-SQM joint venture. Highly experienced geologist with previous roles across a number of Ghanaian mining projects and operations. MATTHEW HORGAN: NON-EXECUTIVE DIRECTOR African-focused mining executive with 14 years experience across engineering, investment banking, marketing and corporate development. HECTOR NYINAKU: DIRECTOR GHANA Currently Vice President of Corporate development at Namibian-focused uranium developer Bannerman Energy. Accomplished administration and logistics executive with previous roles at Golder Star Ltd and Azumah Resources Ltd. ASX: CDT | 19 RECAPITALISED AND POISED FOR GROWTH Shareholders Jindabyne: 5.7% Board: 2.7% Capital Structure 116m 97m Shares on Issue Unlisted Options A$8.5m A$2.4m Market Cap A$6.1m Enterprise Value Balance top 20: 31.9% Working Capital Corporate Broker ASX: CDT | 20 STRONG NEWSFLOW INTO 2026 2025 Q3 KPALI Bundi RC Results New Target Definition Auger Drilling KANDIA WA EAST 2026 Q4 RC Drilling & Results DDH Drilling Q1 Q2 RC & DDH Results Metallurgical Test Work Infill RC Drilling & Results Mineral Resource Estimate RC Drilling Results RC & DDH Drilling & Results RC & DDH Results Reprocess Aeromag Auger Drilling Metallurgical Test work Auger Drilling New Target Generation Mineral Resource Estimate Additional Target Generation RC Drilling Auger Drilling Auger Drilling RC & Auger Results Infill RC Drilling & Results RC Drilling & Results ASX: CDT | 21 STEPHEN STONE EXECUTIVE CHAIRMAN E: stone@castleminerals.com M: +61 (0) 418 804 564 Ph: +61 (0) 89 322 7018 ASX:CDT | castleminerals.com