Spartan Metals has identified eight tungsten-silver veins covering approximately 5.7 square kilometres at the Tungstonia claims within its Eagle project in Nevada, expanding the mapped surface area more than thirteenfold since acquiring the property in July 2025. The structures have a combined exposed strike length of about 6.8 kilometres. Individual veins are generally 0.5 to 3 metres wide, with several occurring in vein swarms across corridors approximately 50–60 metres wide.
Surface sampling identifies high-grade tungsten zones
Sampling from Vein 4 returned up to 5.18% tungsten trioxide, while the structure has now been traced for approximately 1.1 kilometres. The newly identified Spartan C vein extends for about 700 metres, with individual samples grading up to 3.67% and 2.72% tungsten trioxide. Spartan B has also been traced over approximately 700 metres, with samples returning 1.82% and 2.43% tungsten trioxide.
Around 50% of the claim area remains unexplored, leaving additional ground available for geological mapping and target generation.
Drilling required to establish mineralisation
The reported grades come from surface rock samples rather than representative drill intersections. While the results confirm tungsten mineralisation at surface, they do not establish deposit-wide grade, continuity, true thickness or economic tonnage. The expanded mapping has increased the number of targets available for geophysical surveys and drilling. It also indicates that historical mining at Tungstonia may have covered only part of a larger vein-and-skarn mineralised system.
Future drilling will need to establish whether the structures continue at depth and whether the closely spaced veins contain sufficient continuity to support mechanised mining rather than selective extraction. Metallurgical testing will also be required to determine mineral liberation, recovery rates and concentrate specifications for the huebnerite-dominant mineralisation. The expanded surface footprint increases the exploration target inventory at Tungstonia, while systematic drilling remains necessary to define three-dimensional mineralised volumes.
