Spartan Metals has significantly expanded the exploration footprint of its Tungstonia tungsten-silver claims in Nevada, identifying eight mineralised veins across approximately 5.7 square kilometres at the Eagle project. The mapped area is more than 13 times larger than the surface footprint identified when Spartan acquired the property in July 2025, creating a substantially larger exploration target for future geophysical surveys and drilling.
Tungsten Veins Extend Across 6.8 Kilometres
The eight identified structures have a combined exposed strike length of approximately 6.8 kilometres. Individual veins are generally between 0.5 and 3 metres wide, while several appear as vein swarms within broader corridors measuring around 50 to 60 metres across. Sampling has returned high-grade tungsten results from several structures. Vein 4, which has now been traced for approximately 1.1 kilometres, produced rock samples containing up to 5.18% tungsten trioxide.
The newly identified Spartan C vein extends for roughly 700 metres, with individual samples grading as high as 3.67% and 2.72% tungsten trioxide. Spartan B has also been traced for approximately 700 metres, with selected samples returning 1.82% and 2.43% tungsten trioxide. Around half of the Tungstonia claim area remains unexplored, leaving considerable scope for additional mineralised structures to be identified.
Surface Grades Do Not Yet Establish a Deposit
The results provide evidence of significant tungsten mineralisation, but they remain surface sampling results rather than drilling intersections. High-grade samples collected from exposed mineralisation cannot establish the average grade of a potential deposit, continuity at depth, true vein thickness or the amount of economically mineable material.
Those questions will require systematic drilling. The expanded geological mapping nevertheless gives Spartan a substantially larger target inventory to investigate. It also raises the possibility that historical mining at Tungstonia may have focused on only part of a broader tungsten-silver vein and skarn system.
Drilling Will Determine Economic Potential
The next exploration phase will need to establish whether the mapped veins continue below surface and whether multiple closely spaced structures contain sufficient tonnage to support efficient mining. That distinction is particularly important because narrow veins can require selective extraction methods, potentially increasing mining costs.
Spartan will also need to undertake metallurgical testing to determine how the huebnerite-dominant tungsten mineralisation responds to processing, including mineral liberation, recovery rates and concentrate quality. The mapping campaign has therefore transformed Tungstonia into a much larger tungsten exploration target, but the project’s economic value remains unproven. The decisive step will be converting the extensive surface mineralisation into a three-dimensional geological model supported by drilling, consistent grades and sufficient continuous tonnes to demonstrate the potential for commercial development.
