Power Minerals confirms exceptionally high-grade rare earth oxide assays at its newly acquired Morro do Ferro Project in Brazil, validating historical data and setting the stage for aggressive drilling and resource definition.
- Verification assays confirm up to 14.03% TREO and 2.64% MREO
- Duplicate samples closely match historical drilling results
- Assay program de-risks project data ahead of maiden resource
- Acquisition of Morro do Ferro now complete
- Plans underway for deep diamond core, RC and aircore drilling
Verification Sampling Confirms Exceptional Rare Earth Grades
Power Minerals Limited (ASX:PNN) has delivered a significant vote of confidence in its recent acquisition of the Morro do Ferro Rare Earths Project in Brazil, announcing verification assays from six duplicate drill core samples that confirm some of the highest rare earth grades globally. The standout results include Total Rare Earth Oxides (TREO) of up to 14.03% and Magnet Rare Earth Oxides (MREO) reaching 2.64% of whole rock, reinforcing the project's status as a world-class rare earth deposit.
The six duplicate samples were collected from three separate diamond drillholes and submitted blind to SGS Geosol Laboratory, an ISO-certified independent facility. The close correlation of these verification assays with the historical data materially de-risks the inherited drillhole database, which underpins Power Minerals’ exploration strategy and forthcoming resource estimation efforts.
High-Grade Results Span Multiple Drillholes
Among the highlights, drillhole MFSR-44 returned a duplicate sample with 26,418 ppm (2.64%) MREO and 14.03% TREO, placing it among the highest rare earth grades reported worldwide. Additional impressive results include 4.97% TREO from MFSR-12 and 1.66% TREO from MFSR-18, confirming the deposit’s exceptional grade continuity across different sections.
These results build directly on Power Minerals’ recent due diligence findings, which had already flagged high-grade magnetic rare earth oxides at Morro do Ferro. The verification sampling program not only validates the previous owner’s drilling and sampling integrity but also supports the company’s plan to accelerate exploration activities following the acquisition closure last week. This milestone was detailed in the company’s recent strategic Morro do Ferro acquisition announcement.
Robust Quality Control and Data Integrity
Power Minerals emphasised the rigour of the assay process, noting that all quality control samples; including certified reference materials and blind duplicates; fell within acceptable laboratory limits. This high standard of data quality underpins the reliability of the project’s geological model and supports confidence in the forthcoming deep diamond core, reverse circulation (RC), and aircore drilling campaigns planned to expand the deposit footprint.
The company’s CEO, Alistair Stephens, highlighted the importance of these results in de-risking the project’s technical foundation ahead of the maiden Mineral Resource Estimate. Stephens, recently appointed to accelerate South American growth, has brought a seasoned perspective to the project’s advancement, as covered in the rare earths veteran Alistair Stephens appointment announcement.
Next Steps: Expanding the High-Grade Footprint
With the acquisition now complete, Power Minerals is mobilising for an extensive drilling program targeting depths beyond 200 metres and untested margins where historical drilling was sparse. The company aims to convert the strong technical foundation into a robust Mineral Resource Estimate, while also conducting metallurgical studies to optimise rare earth recovery and processing costs.
The Morro do Ferro Project’s location within Brazil’s renowned Poços de Caldas alkaline complex, combined with its exceptional grades and robust data integrity, positions it as a compelling asset in the critical minerals sector. However, the full economic potential will hinge on forthcoming drilling results and metallurgical performance.
Bottom Line?
Power Minerals’ verification assays provide a solid technical platform, but the real test lies ahead in translating these grades into a defined resource and economic viability.
Questions in the middle?
- How will the upcoming deep drilling campaigns refine the deposit’s size and grade continuity?
- What metallurgical recovery rates can be achieved from Morro do Ferro’s unique mineralogy?
- How might evolving rare earth market dynamics influence the project’s development timeline?