OD6 Metals Confirms 700m Fluorspar Corridor With Grades Up to 99.9% CaF2
Key Takeaways
- Six surface rock chip samples returned 97% CaF₂ or better across the Rocket-Big Jim-Spar Corridor, with three samples hitting 99.9% CaF₂ — the highest grades recorded at the Quinn project to date.
- High-grade mineralisation is now confirmed across an approximately 700-metre corridor spanning three structurally distinct prospects, with at least four mineralised structures of differing orientation identified at Big Jim alone.
- The Spar prospect, located 450 metres east of Big Jim, returned up to 94.3% CaF₂ from a structurally distinct style — steeply dipping veins on felsic dyke contacts — confirming the mineralising system is more extensive than previously mapped.
- Near-pure surface grades support a potential low-capital Direct Shipping Metspar pathway ahead of a full flotation circuit, with prior metallurgical testwork on Big Jim returning a head grade of 98.3% CaF₂ with low gangue and excellent ore-sorting performance.
- The US imports 100% of its fluorspar consumption with over 60% sourced from China, making any domestic high-grade source strategically significant — and Quinn sits in Nevada, ranked second globally in the Fraser Institute 2025 Mining Attractiveness Index.
Record fluorspar grades confirmed across 700m Quinn corridor
Surface rock chip sampling at the Quinn Fluorspar Project in Nevada, USA has returned the highest grades recorded to date at the project, with six samples at or above 97% CaF₂ and three samples reported at 99.9% CaF₂.
The results extend confirmed high-grade mineralisation across an approximately 700m corridor running from Rocket through Big Jim to Spar. OD6 Metals announced the findings on 9 September 2026, covering mapping and assay results from the Rocket-Big Jim-Spar Corridor.
Big Jim is no longer an isolated high-grade occurrence. At least four mineralised structures of differing orientation have now been identified across the corridor, which remains open along strike and at depth.
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What the Rocket-Big Jim-Spar results actually show
Big Jim — near-pure fluorspar in shallow-dipping veins
The Big Jim main structure consists of an observed 2m shallow-dipping vein, dipping at 15–20° west, returning 99.9%, 99.9%, 99.7% and 99.5% CaF₂ — near-pure fluorspar at surface.
The footwall to the vein is a breccia zone also observed at approximately 2m width, returning 37.4% CaF₂. The base of that breccia was not observed, so true width remains unknown. The hanging wall iron-oxide zone returned 3.5% CaF₂, indicating some leakage of mineralising fluids above the main vein.
Historic workings with multiple adits indicate a strike length of approximately 200m, and surface soil sampling shows highly anomalous results along strike to the north, suggesting potential continuation.
The Big Jim fluorspar rediscovery established the historical context for this corridor, with earlier work confirming the lode’s continuity and providing the structural baseline against which the current sampling programme has now been extended north and east.
Rocket — high-grade veins in brecciated limestone
The Rocket vein is a brecciated and silicified structure hosted in Pogonip Formation Limestones, dipping shallowly west and potentially parallel with bedding — a geometry similar to Big Jim.
In-situ sampling returned 88.8% CaF₂ from fluorspar veins in the brecciated, silicified outcrop. Nearby float samples interpreted as sourced from Rocket returned 99.9%, 97.0%, 90.6% and 74.0% CaF₂. A possible second mineralised zone (Rocket Upper) was also sampled during a recent site visit, with assays pending.
Spar — a different structural style, 450m east of Big Jim
Located approximately 450m east of Big Jim, the Spar prospect shows a structurally distinct mineralisation style: steeply dipping veins up to 2m wide along ENE-WSW striking felsic dyke contacts.
Assay results from Spar returned 94.3%, 94.1% and 87.1% CaF₂. A low-grade halo was noted around the high-grade structures, with clay on the dyke contact returning 6.6% CaF₂ and the dyke itself returning 1.0% CaF₂. Importantly, the dykes are resistant to weathering and can be traced across the topography toward Big Jim, forming a potential along-strike target area.
Spar’s structurally distinct style confirms that the mineralising system is potentially more extensive than previously mapped.
| Prospect | Sample ID | Sample Type | CaF₂ (%) | Description |
|---|---|---|---|---|
| Rocket-Big Jim | DH191 | Rock | 99.9% | Fluorspar from Big Jim Adit |
| Rocket-Big Jim | DB067 | Rock | 99.9% | Purple and white fluorspar from mine-spoil |
| Rocket-Big Jim | DH193 | Float | 99.9% | Fluorspar from wash line channel below Rocket |
| Rocket-Big Jim | DH190 | Rock | 99.7% | White fluorspar in Big Jim Adit |
| Rocket-Big Jim | DH189 | Rock | 99.5% | Purple fluorspar in Big Jim Adit |
| Rocket-Big Jim | JN010 | Float | 97.0% | Purple fluorspar in float |
| Spar | DH213 | Rock | 94.3% | Fluorspar / vuggy texture vein |
| Spar | DH218 | Rock | 94.1% | Fluorspar on dyke contact |
| Rocket-Big Jim | JN012 | Float | 90.6% | Fluorspar float |
| Rocket-Big Jim | DB066 | Rock | 88.8% | Fluorspar veins in brecciated silicified outcrop |
| Spar | DH219 | Rock | 87.1% | Fluorspar in dozer scrape |
| Rocket-Big Jim | JN011 | Float | 74.0% | Fluorspar in float |
What is fluorspar and why does domestic US supply matter?
Fluorspar (CaF₂) is a critical industrial mineral used in hydrofluoric acid production, AI semiconductor manufacturing, advanced battery technologies, uranium enrichment, defence systems and refrigerants. The United States classifies it as a critical mineral — and for good reason: the US currently imports 100% of the fluorspar it consumes, with more than 60% of global supply sourced from China.
That supply concentration creates a strategic vulnerability. Any domestic US source of high-grade fluorspar carries significant strategic relevance at a time when supply chain security has become a policy priority.
Two product grades matter most to investors. Metspar is a lower-purity product used in steelmaking and general industrial applications. Acidspar, the premium grade at >97% CaF₂, is required for chemical and high-technology manufacturing. The near-pure surface grades confirmed at Quinn support a potential low-capital pathway to a Direct Shipping Metspar product ahead of a full flotation circuit for premium Acidspar — a staged development approach that could reduce upfront capital requirements.
Nevada’s jurisdiction reinforces the project’s appeal. The state is ranked second globally in the Fraser Institute 2025 Mining Attractiveness Index, offering established permitting frameworks, infrastructure, and political stability for mining development.
Quinn’s expanding opportunity — where the corridor fits the bigger picture
The Rocket-Big Jim-Spar Corridor adds a third style of target to the Quinn project, sitting alongside the 60m-wide replacement zone at Horseshoe and the 100m-wide breccia and stockwork zone at Mammoth. The corridor’s narrow, very-high-grade veins complement rather than compete with those bulk-tonnage targets, offering potential for compact, very high-grade feed sources within a hub-and-spoke development framework.
Horseshoe deposit drilling has returned its own exceptional CaF2 grades from a structurally distinct replacement-style setting, reinforcing the project-level case that multiple deposit geometries can coexist within the Quinn mineralised corridor.
Geological consistency across the corridor strengthens confidence in the system. Large-format metallurgical testwork on the Big Jim main vein, as detailed in OD6’s release dated 12 August 2026, returned a head grade of 98.3% CaF₂ with very low gangue and deleterious elements and excellent ore-sorting performance. The surface sampling results across the broader corridor are consistent with that metallurgical work.
Key attributes of the Quinn project include:
- Location in Nevada, USA, one of the world’s established mining jurisdictions, ranked second globally in the Fraser Institute 2025 Mining Attractiveness Index
- 100% ownership of 226 mining claims covering approximately 1,890 hectares
- 8km fertile mineralised corridor confirmed, with additional high-grade fluorine anomalies identified outside known deposits
- More than 20 fluorspar occurrences across the project, supporting a hub-and-spoke development strategy
- Low impurity mineralisation supporting potential production of both premium Acidspar (>97% CaF₂) and Metspar products following beneficiation
- Permitting programme underway, including environmental baseline, archaeological studies and preparation of drilling and bulk sample approvals
- Potential gold upside identified in soil sampling across Mammoth, Horseshoe and Dress Circle
Managing Director Brett Hazelden
“These are exceptional fluorspar grades and significantly expand the opportunity we see around Big Jim. Six samples returned 97% CaF₂ or better, including three reported at 99.9% CaF₂, across a prospective corridor extending approximately 700 metres from Rocket through Big Jim to Spar.
Importantly, Big Jim is no longer an isolated high-grade occurrence. We have now identified multiple mineralised structures and different styles of fluorspar mineralisation across the corridor, including the newly sampled Spar prospect approximately 450 metres east of Big Jim, where samples returned up to 94.3% CaF₂…
The newly sampled Spar prospect, around 450 metres east of Big Jim, returned 94.3%, 94.1% and 87.1% CaF₂ from steeply dipping veins on felsic dyke contacts. Spar is a different structural style to the shallow-dipping structures at Rocket and Big Jim, and it indicates the mineralising system is potentially more extensive than previously mapped.”
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What’s next for OD6 at Quinn
OD6 has several confirmed workstreams advancing at Quinn. Next steps, as stated in the announcement, include:
- Drill permitting: Applications progressing through the US Forest Service
- Assay results pending: Samples collected from the possible Rocket Upper zone await laboratory results
- Metallurgical testwork continuing: Optical sorting and beneficiation studies advancing to optimise premium product recoveries
- Permitting programme: Environmental baseline and archaeological studies ongoing as part of the broader approvals process
- Gold upside: Early-stage potential identified in soil sampling across Mammoth, Horseshoe and Dress Circle — flagged as exploration upside only at this stage
The results to date position Quinn as a project with the potential to emerge as a strategically significant domestic source of high-grade fluorspar in a US market that, as the announcement notes, remains 100% net import reliant.
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