OD6 Metals (ASX:OD6) has reported results from the first systematic channel sampling at the historic Big Jim workings at its Quinn Fluorspar Project in Nevada, USA, returning 14 metres at 93.7% CaF₂, with no individual vein sample recording less than 80% CaF₂.

Key Points

  • Seven contiguous channel samples (JN115 to JN121) returned 14m @ 93.7% CaF₂, including 12m @ 95.9% CaF₂ from the Big Jim vein at the Quinn Fluorspar Project in Nevada, USA
  • No sample within the vein returned less than 80% CaF₂, with six of seven samples recording grades above 93%
  • A new rock chip sample (JN112) from the Rocket upper lode, approximately 150 metres west of Big Jim, returned 99.9% CaF₂
  • Big Jim, Rocket and Spar define a approximately 700-metre corridor of ultra high-grade fluorspar in at least four mineralised structures, open along strike and at depth

Big Jim Channel Sampling Results and Methodology

Eight contiguous two-metre samples (JN115 to JN122) were collected along the exposed Big Jim vein, commencing at the southernmost surface exposure, continuing above the historic adit and along the cliff face to the north. The first six samples consist of massive fluorspar with individual grades between 93.5% and 97.6% CaF₂. Sample JN122, the final sample, is entirely wall rock and returned 0.6% CaF₂. All samples were assayed by ALS Global using the F-XRF24 technique. The channel is oriented approximately north–south along the exposed vein and represents length along the structure, not vein thickness. The Big Jim main structure is a shallow, 15 to 20 degree west-dipping vein with an observed thickness of approximately two metres.

Historic Records Validated and Structure Remains Open

The channel results are consistent with historic documentation by Goulet and Jones (1947), who recorded the Big Jim lode as a shallow-dipping high-grade lode approximately two metres wide, with workings mapped over more than 220 metres and high-grade fluorspar reported throughout and at either end. Only one adit is now visible at surface, with the remainder of the historic workings covered by erosion or deliberately closed. Soil sampling has previously returned highly anomalous fluorine pathfinder results along strike to the north of the projected Big Jim structure, and the system remains open to the north and south. The northern end of the channel marks the limit of accessible exposure rather than the limit of the vein.

Rocket Prospect Adds Further High-Grade Result to 700-Metre Corridor

A new rock chip sample (JN112) collected from a dozer scrape on the Rocket upper lode, approximately 150 metres west and upslope of Big Jim, returned 99.9% CaF₂. The sample is from a shallow-dipping breccia zone approximately one metre wide. This result adds to previously reported Rocket lower samples including an 88.8% CaF₂ in-situ result and float samples of 99.9%, 96.9%, 90.6% and 73.9% CaF₂ reported on 9 September 2026. Together, Big Jim, Rocket and Spar define a approximately 700-metre corridor of ultra high-grade fluorspar in at least four mineralised structures of differing orientation, with the company identifying Big Jim as a priority drilling target and noting further assessment of potential direct-shipping Metspar opportunities alongside the broader Horseshoe and Mammoth development targets.