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Sovereign Metals Ltd, a key player in the Mining sector, has commenced an infill drilling program at the Kasiya Rutile-Graphite Project in Malawi. The focus of this initiative is on the southern section of the project, with the aim of upgrading the mineral resource estimate (MRE) and supporting ongoing technical studies.
Drilling Program Details
The infill drilling by Sovereign Metals Ltd (LSE:SVML) is concentrated on the southern part of Kasiya, an area designated for Stage 1 production. The aircore drilling, complemented by push tube/diamond core and hand auger drilling, seeks to upgrade the MRE from the indicated to the measured category. This upgrade would subsequently allow the conversion of ore reserves from the probable to the proven category, which is crucial for the project’s development. The southern section is anticipated to supply ore feed for the first eight years of production in the planned production schedule.
The drilling program, overseen by the Rio Tinto-Sovereign Technical Committee, was designed with a 200x200-metre offset pattern, resulting in an average drill spacing of 142 meters. This offset configuration allows for comprehensive analysis of both geology and grade continuity in orthogonal and diagonal directions, ensuring a thorough assessment of the resource.
Resource Upgrade and Future Outlook
A resource upgrade for Kasiya is anticipated in early 2025. Sovereign Metals’ managing director, Frank Eagar, highlighted the importance of the infill drilling program, noting that it targets areas expected to provide the bulk of production during the first seven to eight years. The program's design and execution under the guidance of the Rio Tinto-Sovereign Technical Committee further underscore the benefits of the partnership formed in July 2023.
Kasiya is recognized as the world’s largest rutile deposit and the second-largest flake graphite deposit, with over 66% of the current MRE classified in the indicated category. The existing MRE has identified broad and continuous zones of high-grade rutile and graphite spread across more than 201 square kilometers.
Technical Aspects and Past Success
The drilling program will consist of more than 250 aircore holes totaling over 5,000 meters, with an average depth of 20 meters. Additionally, more than 250 hand auger holes, averaging 3 meters deep, and 30 push tube/diamond core holes will be drilled to provide samples for geotechnical analysis and verification. Several pits, each 3 meters deep, will also be excavated to obtain detailed rutile grade information from the upper profile and to gather additional geotechnical data.
All samples collected will undergo rutile and graphite assays at offsite laboratories in South Africa, with results expected in early 2025. This follows a successful 2022 drill program at Kasiya, where Sovereign Metals effectively converted inferred mineralization into the indicated category using push tube core holes, demonstrating the consistency and robustness of the geology.
