Current work (Q1 2024) at Berenguela is focused on metallurgical testing of composite samples of Ag-Cu-Mn mineralization. Work is on going to generate samples of high purity manganese sulphate monohydrate (HPMSM) which could be a potentially important co-product to accompany future production of silver and copper. Results of the metallurgical test work will be incorporated into the design of a processing facility for a preliminary economic analysis (PEA.)
In May, 2022, Aftermath announced the completion of a 63-hole ca. 6,200m diamond drill program at Berenguela. The Phase 1 program focused on the following key objectives:
- Metallurgical sample collection. PQ-diameter diamond core holes were drilled to collect mineralized material in specific areas of the Berenguela deposit to generate metallurgical composites of varying grade. Selected holes will also be geotechnically logged; some metallurgical holes were twins of historic RC drilling which affords the opportunity to validate previous results.
- HQ-diameter diamond core holes for resource conversion, some confirmation drilling, and some exploration on the margins of the known mineralisation;
The 2022 drill results were incorporated into a new resource estimate published in early 2023. With a better understanding of the distribution of Ag, Cu and Mn within the mineralized body, composite samples were shipped to Reno, Nevada for metallurgical testwork.
Aftermath's technical team will also review and prioritise the significant exploration potential around Berenguela and will drill test the most prospective targets once drill permits have been received for the additional drilling and funding is available.