Lodestar Minerals has expanded its Virgin Mountain project in Arizona by 40%, locking in a 5 km corridor of high-grade heavy rare earth mineralisation highlighted by rock chip assays reaching 14.68% TREO with a 59% heavy rare earth oxide content.
- Landholding expanded by 40% to 661 acres
- High-grade assays up to 14.68% TREO with 59% HREO
- Xenotime-hosted structure enriched in critical HREEs
- Planned radiometric and magnetic survey to refine drill targets
- Project positioned for maiden drilling campaign
Strategic Land Expansion Secures Critical Heavy Rare Earth Corridor
Lodestar Minerals (ASX:LSR) has significantly bolstered its foothold at the Virgin Mountain Heavy Rare Earth Project in Arizona, increasing its land position by approximately 40% to 661 acres. This expansion consolidates control over a fully mapped 5-kilometre structural corridor hosting high-grade xenotime mineralisation, a rare earth phosphate mineral rich in dysprosium, terbium, and lutetium, elements flagged by US agencies as critical to magnet, defense, and clean energy supply chains.
Rock Chip Assays Confirm Exceptional Grade and Heavy Rare Earth Tenor
Recent surface rock chip sampling has returned standout assays, including a peak Total Rare Earth Oxide (TREO) grade of 14.68% with a heavy rare earth oxide (HREO) proportion of 59%, notably containing 0.76% dysprosium oxide. Other significant samples report TREO grades of 1.48% and 1.39% with over 54% HREO content, reinforcing the tenor of mineralisation along the corridor. These selective samples, though not necessarily representative of the entire structure, underscore the potential for a high-value HREE deposit.
Fieldwork Validates Continuity and Guides Next-Phase Exploration
Lodestar’s US exploration team, led by Principal Geological Consultant Finn Hunter, has confirmed the continuity of the xenotime-bearing mineralised shear zone through detailed mapping and ground-based radiometric measurements. The mineralised structure now extends 175 metres beyond the previously defined Hummingbird zone, with surface expression traceable continuously to the highest-grade sample site (NGR051). Limited surface exposure due to alluvial cover has prompted the prioritisation of a high-resolution airborne radiometric (U/Th/K) and magnetic survey to delineate structural details and define drill-ready targets.
Planned Surveys and Maiden Drilling Campaign on the Horizon
The upcoming radiometric and magnetic survey is designed to refine the structural architecture beyond surface mapping, enabling precise targeting of the xenotime-hosted HREE system along the corridor. Concurrently, Lodestar is advancing permitting and logistical preparations for its inaugural drilling campaign, aiming to systematically test the mineralised structure along the secured 5 km trend. This methodical approach is expected to reduce exploration risk by ensuring valid land tenure and comprehensive structural understanding prior to drilling.
Broader Portfolio and Strategic Positioning
Virgin Mountain sits alongside Lodestar’s diverse portfolio that includes copper-molybdenum-gold projects in Chile and gold and base metal assets in Western Australia. The company also holds exposure to lithium via performance rights in ORE Resources, reflecting a broad strategic focus on critical minerals essential for the energy transition. The high-grade, heavy rare earth focus at Virgin Mountain aligns with growing global demand for elements underpinning clean energy and defense technologies.
Bottom Line?
Lodestar’s land consolidation and strong assay results at Virgin Mountain set the stage for a critical next step: translating surface mineralisation into a drill-defined resource with the upcoming radiometric survey and maiden drilling campaign.
Questions in the middle?
- Will the planned radiometric and magnetic survey confirm structural extensions beneath cover?
- How representative are the high-grade rock chip assays of the broader mineralised system?
- What timelines and results can investors expect from the maiden drilling campaign?