OD6 Metals has significantly increased the Mammoth fluorspar target footprint at its Quinn Project in Nevada, revealing broad, high-grade mineralisation with assays up to 85.9% CaF2 and preparing for drilling to define the system's scale.
- Mammoth target footprint grows from 9,000m² to over 14,000m²
- Channel sampling shows broad intervals with grades up to 85.9% CaF2
- Mineralisation remains open beneath cover, offering further expansion potential
- Drilling planned to test geometry, grade continuity, and depth extent
- Quinn Project benefits from strong US fluorspar market dynamics and strategic location
Mammoth Target Footprint Surges by More Than 50%
OD6 Metals (ASX:OD6) has unveiled a substantial expansion of its Mammoth fluorspar target within the Quinn Fluorspar Project in Nevada, increasing the mapped mineralised area by over 50% to more than 14,000 square metres. This growth follows detailed geological remapping and sampling campaigns that have redefined the mineralised breccia and stockwork system to extend over 300 metres in strike and up to 100 metres across, with the system still open beneath surface cover.
Broad, High-Grade Mineralisation Across Multiple Benches
Channel sampling across multiple benches has returned continuous fluorspar mineralisation, with standout intercepts including 44 metres at 29% CaF2 and a peak assay of 58.4% CaF2 on Middle Bench, and 22 metres at 20.1% CaF2 with a maximum of 85.9% CaF2 on Upper1 Bench. Rock chip samples complement these findings, featuring assays as high as 78.3% CaF2. Such widths and grade continuity suggest a bulk-tonnage style deposit, contrasting with the narrower, ultra-high-grade veins seen at nearby Horseshoe and Big Jim prospects.
Open Mineralisation Presents Further Growth Opportunities
The mineralised system remains open to the east beneath talus cover and to the north under a silicified limestone cap, with a southern extension identified historically but yet to be tested. These untested zones represent immediate drill targets as OD6 prepares to advance the next phase of exploration. The company emphasises the potential for Mammoth to complement the high-grade targets nearby, adding scale and diversity to its district-scale fluorspar portfolio.
Strategic Timing Amid Strengthening Fluorspar Market
Fluorspar prices have strengthened sharply, with Acidspar prices rising approximately 29% over the past three quarters to US$654 per tonne as of July 2026, reflecting tightening global supply. The Quinn Project’s location in Nevada, one of the world’s most mining-friendly jurisdictions, positions OD6 to tap into the US market where fluorspar remains 100% import reliant and is classified as a critical mineral. The company is advancing metallurgical and ore-sorting testwork to evaluate pathways for Metspar and premium Acidspar product development.
Next Steps: Drilling and Resource Definition
OD6 is progressing drill permitting with plans to test the geometry, depth, and grade continuity of the Mammoth system. While the current data from surface sampling is encouraging, drilling will be critical to confirm true widths and support future resource estimation. This step aligns with the company’s broader strategy to build a significant domestic fluorspar supply chain in the US, supported by its consolidated 226 mining claims and multiple high-priority targets across the Quinn district.
Bottom Line?
Drilling at Mammoth will be pivotal to unlock its bulk-tonnage potential amid rising fluorspar demand and prices.
Questions in the middle?
- Will drilling confirm the continuity and true widths suggested by surface sampling?
- How will metallurgical testwork influence the feasibility of producing premium fluorspar products?
- Can Mammoth’s scale complement the high-grade but narrower Horseshoe and Big Jim deposits to form a robust district resource?