OD6 Metals (ASX:OD6) reports fluorspar assays up to 53.2% CaF₂ at Mammoth prospect

OD6 Metals has reported first assay results from the Mammoth prospect within its Quinn Fluorspar Project in Nevada, with rock chip sampling confirming high-grade fluorspar mineralisation across a defined 9,000m² target zone.

The results form part of preliminary due diligence activities following the company’s option to acquire the project.

Highlights

• First assay results confirm high-grade fluorspar mineralisation at Mammoth across a 9,000m² target zone
• Rock chip assays include 53.2% CaF₂, 43.8% CaF₂, 33.8% CaF₂, 32.9% CaF₂ and 31.5% CaF₂
• Mineralisation in surrounding limestone up to 32.9% CaF₂ indicates extension to the west and north
• Mineralisation interpreted to extend east under cover, which remains untested
• Results validate historic data
• Additional assays pending from multiple prospects

The results are based on rock chip and channel sampling conducted during a February 2026 site visit, including sampling across outcropping fluorspar breccia and surrounding limestone.

At the north side of Sawmill Creek, sampling of a replacement body returned results up to 53.2% CaF₂, with additional samples from the main breccia body returning grades including 43.8% and 31.5% CaF₂.

Further sampling along the western contact returned up to 32.8% CaF₂ in breccia within limestone, along with 18.8% and 17.6% CaF₂ from limestone and stockwork veins. Mineralisation was recorded outside the previously mapped breccia zone.

The Mammoth prospect forms part of the Quinn Fluorspar Project, located approximately 220km north of Las Vegas, Nevada, with the project comprising multiple prospects and historical rock chip results reported up to 94% CaF₂.

Fluorspar mineralisation at Mammoth and nearby prospects is described as replacement and breccia-style mineralisation hosted within Paleozoic limestones and dolomites, with additional vein and vein breccia occurrences.

OD6 Metals Managing Director Brett Hazelden stated,

“These initial results from Mammoth not only validate the exceptional grades reported historically, but importantly demonstrate the scale potential of the system, with mineralisation extending beyond the previously mapped breccia zone.”

The current program forms part of a broader due diligence process associated with the acquisition option.

Planned work includes systematic surface rock chip and channel sampling, verification of historic assay grades, detailed geological mapping and structural interpretation, soil geochemistry sampling, and the development and prioritisation of drill targets.

The company also intends to commence permitting requirements for an initial drill program and review metallurgical sampling and testing requirements.

The company noted that it is well funded to accelerate exploration, with additional assay results from various prospects to be released progressively.