Capivara Prospect Yields Rare Earths up to 2,499 ppm TREO with 60% Magnet Oxides
Gold Mountain Limited reports robust high-grade rare earth mineralisation at its Capivara Prospect in Brazil, with assay results confirming significant shallow deposits and promising magnet rare earth oxide ratios. The company is advancing towards resource definition drilling and metallurgical testing.
- High-grade rare earth mineralisation confirmed with TREO up to 2,499 ppm
- Magnet Rare Earth Oxide (MREO) ratios reach up to 60%, indicating valuable element concentration
- Mineralisation intercepted from surface and remains open at depth
- Resource definition diamond drilling planned with permitting underway
- Metallurgical test work in progress at Australian Nuclear Science and Technology Organisation (ANSTO)
Consistent High-Grade Rare Earth Mineralisation
Gold Mountain Limited (ASX:GMN) has released encouraging assay results from its Capivara Prospect, part of the Down Under Project in Brazil. The latest data from 52 auger drill holes reveal thick, shallow profiles of rare earth mineralisation, with Total Rare Earth Oxide (TREO) grades reaching as high as 2,499 parts per million (ppm). Notably, the Magnet Rare Earth Oxide (MREO) ratios, which highlight the concentration of valuable magnet rare earth elements, have peaked at 60% in some samples, underscoring the prospect’s potential economic significance.
Geological Context and Mineralisation Style
The mineralisation at Capivara is associated with a lateritic ionic adsorption clay (IAC) style system, predominantly hosted within the saprolite zone of a deeply weathered profile. The Chemical Index of Alteration (CIA) values, ranging from approximately 97% near surface to 60% at depth, correlate strongly with the rare earth enrichment, suggesting that mineralisation extends beyond the shallow depths currently tested. Auger drilling has primarily sampled the upper weathered profile, with mineralisation remaining open at depth, indicating significant upside potential.
Advancing Exploration and Metallurgical Testing
Gold Mountain is progressing towards resource definition with planned diamond drilling aimed at delineating the deeper saprolite-hosted mineralisation. Permitting for this next phase of drilling at Capivara North is underway. Concurrently, metallurgical test work is being conducted at the Australian Nuclear Science and Technology Organisation (ANSTO) to assess the extraction characteristics of the mineralisation. These tests are critical to understanding the processing potential of the IAC-style rare earths and the composition of downstream products.
Strategic Implications for Gold Mountain
This latest tranche of results significantly enhances the prospectivity of the Down Under Project, reinforcing Gold Mountain’s position in the rare earth elements sector. The combination of high TREO grades, favourable MREO ratios, and mineralisation starting from surface presents a compelling case for further investment and exploration. The company’s diversified portfolio, including lithium and copper projects in Brazil, complements its rare earth focus and positions it well within critical minerals markets.
Looking Ahead
With resource drilling and metallurgical testing advancing, Gold Mountain is poised to refine its understanding of the Capivara mineral system and its economic potential. Investors and analysts will be watching closely for the outcomes of diamond drilling and processing studies, which will be pivotal in shaping the project’s development trajectory.
Bottom Line?
Gold Mountain’s Capivara Prospect results mark a significant step forward, but deeper drilling and metallurgical insights will be key to unlocking its full value.
Questions in the middle?
- Will the upcoming diamond drilling confirm the vertical extent and continuity of high-grade mineralisation?
- How will metallurgical test results influence processing methods and product quality for the rare earths?
- What are the timelines and regulatory hurdles for advancing resource definition and potential development?
