26 Samples Exceed 6% Total Heavy Mineral in MRG’s Mozambique Drilling
MRG Metals has reported strong laboratory results from 37 auger drillholes at its Adriano Rare Earth Project in Mozambique, confirming significant alluvial deposits with Total Heavy Mineral grades up to 9.56%. These findings bolster the potential for a district-scale rare earth system across the Adriano–Fotinho corridor.
- High-grade Total Heavy Mineral (THM) results from 37 auger drillholes
- 26 samples exceeded 6% THM, with a peak of 9.56% THM over 1 metre
- Five drillholes returned weighted average THM grades above 6%
- Mineralogical studies and pegmatite sampling planned for early 2026
- Potential district-scale rare earth system linking alluvial and primary sources
Strong Alluvial Mineralisation Confirmed
MRG Metals Limited (ASX – MRQ) has unveiled compelling laboratory results from its ongoing exploration at the Adriano Rare Earth Project in Mozambique. The company drilled 37 auger holes across four initial alluvial target areas, returning high Total Heavy Mineral (THM) grades that confirm the presence of significant alluvial deposits. Notably, 83 of 125 samples exceeded 4% THM, with 26 samples surpassing 6%, and an individual sample reaching as high as 9.56% THM over a 1-metre interval.
These results reinforce the interpretation of a district-scale rare earth corridor spanning the Adriano and adjacent Fotinho licences, both 100% owned by MRG. The auger drilling focused on near-surface alluvial sediments above the water table, revealing a coherent mineralised footprint within a shared drainage system.
Linking Alluvial Deposits to Primary Sources
MRG’s exploration strategy includes detailed mineralogical investigations of the Heavy Mineral Concentrate (HMC) to identify valuable minerals such as monazite, which hosts rare earth elements (REE). Early 2026 will see magnetic separation and mineralogical studies conducted at MAK Analytical in South Africa, aiming to confirm whether the alluvial mineralisation aligns with the exceptional rare earth grades previously reported in a 2024 stream-sediment sampling program.
In parallel, the company has mapped and sampled multiple pegmatite bodies along a 3-kilometre corridor within the Adriano licence. These pegmatites are considered potential primary source rocks for the rare earth mineralisation observed in the alluvial deposits. Analytical results for these pegmatites are expected in January 2026, which could provide critical evidence linking the alluvial deposits to their hard-rock origins.
Exploration Momentum Builds Across the Corridor
MRG’s non-executive director Chris Gregory highlighted the growing confidence in the geological model, noting the alignment between alluvial deposits, pegmatite trends, and historic high-grade stream sediment results. Chairman Andrew Van Der Zwan emphasized the rapid progress and momentum in exploration activities, with additional drilling completed and samples en route to laboratories.
The company is also expanding exploration into the Fotinho licence, which shares the same geological setting and drainage catchment as Adriano. Early-stage work there aims to test the continuity of mineralised alluvial channels and potential hard-rock sources, potentially confirming a district-scale rare earth system.
Next Steps and Outlook
Further laboratory analyses of alluvial and pegmatite samples are scheduled for January 2026. Depending on mineralogical results, MRG plans infill drilling and possibly sonic drilling to extend exploration below the water table and through coarser sediments. The company is methodically advancing towards defining a mineral resource estimate, with the ultimate goal of unlocking value from this emerging rare earth asset.
Bottom Line?
MRG Metals is steadily piecing together a rare earth district-scale system, with upcoming assays set to clarify the project's true potential.
Questions in the middle?
- Will mineralogical studies confirm the presence and grade of rare earth elements within the alluvial heavy mineral concentrates?
- Do the pegmatite assays validate the hypothesis of a primary source rock feeding the alluvial rare earth system?
- How extensive and continuous is the rare earth mineralisation across the Adriano–Fotinho corridor beyond current drilling areas?
