Announcement • Jul 22
Resolute Mining Limited Expands Mineral Resource Estimate at ABC Project
Resolute Mining Limited provided an update for its 100%-owned ABC Project in northwest Côte d'Ivoire including an expanded Mineral Resource Estimate and ongoing technical studies. Additional drilling of over 31,000m delivers an expanded Inferred Mineral Resource Estimate of 133 Mt grading 0.71 g/t Au for 3.0 Moz (at 0.3 g/t cut off, USD 3,250/oz Au pit shell). The majority of the updated Mineral Resource is within 250m of surface and both Kona South and Kona Central deposits remain open along strike and at depth, supporting further resource growth potential. Since acquiring ABC in 2025, Resolute has completed over 31,000 m of drilling to expand the existing Inferred Mineral Resource Estimate of 2.16Moz. Drilling to date by Resolute has confirmed extensions to mineralisation outside the previous Mineral Resource block models, and both Kona South and Kona Central remain open along strike and at depth. The updated Mineral Resource Estimate represents an important milestone for the Project. The scale and continuity of mineralisation at Kona South and Kona Central deposits provides confidence in the potential for further resource growth at ABC. The approved next phase work programme, expected to cost approximately $15-25 million over the next twelve to eighteen months, is designed to advance through feasibility studies. This includes a major infill drill campaign of more than 80,000 m focusing on converting Inferred Mineral Resources to the Indicated category that has commenced in Second Quarter 2026. In parallel, permitting, environmental and technical workstreams will be progressed. The ABC Gold Project is located in northwest Côte d'Ivoire, approximately 550km northwest of Abidjan. Resolute acquired ABC from AngloGold Ashanti in 2025. The Project consists of four exploration permits: Faraka-Nafana, Kona, Windou and Gbemanzo, all of which are 100% owned by Resolute. The Mineral Resource Estimate is over the Kona South and Kona Central deposits. The deposits are approximately 3km apart and are in the southern area of the Kona exploration permit. The Moya prospect is located 8km north of Kona Central and represents a new growth target within the Kona permit. Drilling at Kona commenced in February 2026 with the strategy to expand the mineralised footprint of the Kona South and Kona Central prospects. RC and diamond drilling has been undertaken to test the extensions of the mineralised zones to the north and south and down dip. The programme was successful with economic intersections returned along strike at both Kona South and Kona Central, further demonstrating the continuity and growth potential of the mineralised system. Recent diamond drilling at Kona South also identified extensions to mineralisation at depth, highlighting additional opportunities to expand the resource footprint. At Kona a total of 149 holes has been completed in 2026 comprised of 124 RC holes for 23,473m and 25 diamond drillholes for 7,645m. At Kona South, gold is predominantly hosted in psammitic units (north-south striking) dipping approximately 70° west. This unit is sandwiched between a calc-silicate hanging wall to the west and a paragneiss footwall to the east. An additional mafic volcanic unit lies west of the calc-silicate layer, completing the local stratigraphy. The style of mineralisation is structurally controlled and shows a strong spatial association with arsenopyrite. Arsenopyrite occurs as disseminations and aggregates aligned with the foliation of the psammitic host. Strong silicification is evident within mineralised zones, though quartz veining is rare and does not appear to play a significant role in gold control. Located 8km north of Kona Central, Moya represents a new growth target within the Kona permit. Exploration drilling conducted alongside the broader Kona programmes has successfully identified gold mineralisation at Moya, highlighting its potential to expand the project's mineralised footprint and provide an additional source of future resource growth. The updated Mineral Resource Estimate includes both Kona Central and Kona South deposits. For Kona South, mineralisation was modelled as five discrete and stacked lodes, striking NNW and dipping steeply to the west. Wireframes were built using a lower domain cut-off grade of 0.2g/t and are mostly restricted to the mineralised Psammite unit. The overall modelled strike length is 2.5km with plan thickness of individual lodes up to 65m and a combined plan thickness of the mineralised zone up to 150m. The Kona South grade estimate used a wireframe constrained Ordinary Kriged workflow. Kona Central displays a broad mineralised zone with a modelled extent of 2.6km. Mineralisation strikes to the NNW and dips steeply west. The higher-grade zones within the overall broad envelope are less discrete than at Kona South. Therefore, a bulk zone wireframe was built to encapsulate all mineralised intercepts within the psammite units. Categorical Indicator Kriging was applied within the bulk envelope to probabilistically define strongly and weakly mineralised sub-domains. Grade estimates were made into relatively large panel blocks using Ordinary Kriging, and post processed through a non-linear Uniform Conditioning and Localised Uniform Conditioning workflow. The Mineral Resource for the ABC Project is constrained within an optimised pit shell assuming a gold price of USD 3,250/oz and quoted above a cut-off of 0.3g/t. Constrained ABC Inferred Mineral Resource Estimate: Kona Central 64.6 Mt at 0.62 g/t for 1.29 Moz, Kona South 68.1 Mt at 0.79 g/t for 1.72 Moz, Total 132.7 Mt at 0.71 g/t for 3.02 Moz. Mineral Resources are reported in accordance with the JORC Code 2012. Mineral Resources are reported at a cut-off grade of 0.3g/t Au. Mineral Resources are reported on a 100% basis. Mineral Resources have been reported within an optimised pit shell at USD 3,250/oz Au. Tonnes and ounces are rounded to reflect the precision of the estimate. Mineral Resources are not Ore Reserves and do not have demonstrated economic viability. No Ore Reserve has been declared for the ABC Gold Project. Updated Mineral Resource Estimate has an effective date of 12/07/2026. The ABC project is situated along the main Archean-Birimian Cratonic suture zone in western Côte d'Ivoire, specifically associated with the Sassandra Fault Zone. The principal mineralised feature identified through mapping and sampling is the Lolosso structure, interpreted as a western splay off the major transcurrent Sassandra Fault. The Kona mineralisation is predominantly hosted in psammitic units (NNW striking) dipping approximately 70° west. The psammites are sandwiched between a calc-silicate hanging wall to the west and a paragneiss footwall to the east. At Kona South, mineralisation is modelled as five discrete and stacked lodes defining a corridor of combined plan thickness of up to 120m along a strike length of 2.5km.
