Resource exploration and development company Altona Rare Earths has achieved strong results from its fluorspar discovery at Monte Muambe rare earths and gallium project in Mozambique, confirming grades as high as 93.31% CaF₂. These results validate the potential for a 50,000 tpa acid-grade fluorspar mine, with ongoing metallurgical test work showing promising progress in producing a high-quality concentrate.
Management is confident these results significantly strengthen the business case for the development of the fluorspar operation and highlight the growing resource potential of the project.
The confirmation of the high-grade character of the fluorspar body opens up further value and resource potential at the project site. The company is confident in the prospectivity of Monte Muambe and is actively working on advanced metallurgical testing and engagement with off takers to position it as a strategic supplier of acid-grade fluorspar.
ALSO READ: Pensana begins construction at Longonjo after $25M FSDEA backing
On 28 May 2025 Altona reported the discovery of a previously undocumented, high-grade fluorspar body following ground-truthing of gallium soil anomalies in the southern part of the Monte Muambe carbonatite intrusion. Mapping and trenching defined a continuous fluorspar structure at least 120m long and up to 15m wide, remaining open at both ends and offering significant upside potential.
Five representative grab samples from trenching across the fluorspar body returned significantly higher than expected fluorspar grades ranging from 69.72% to 93.31% CaF₂.This fluorspar body exhibits a significantly narrower and higher range of grades compared to the historically known Fluorite Zone located along the western margin of the carbonatite intrusion. This presents an opportunity to blend ore from both sources, thereby achieving a higher overall plant feed grade and improving the recoverability of material from the Fluorite Zone.