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Western Ridge Resources (ASX: WRX) has intersected broad zones of shallow silver mineralisation at its Keystone polymetallic project in north-western Nevada, US, with early drilling results also revealing potential for tungsten discoveries.
Assays from the first two holes of the company’s inaugural drilling campaign returned intersections of 41.15m at 30.83 grams per tonne (g/t) silver from 41.15m and 44.2m at 26.81g/t silver from 30.48m.
Higher-grade intervals included 1.52m at 273g/t silver and 1.52m at 200g/t silver.
The results identified multiple stacked silver-bearing lodes beneath the historic Keystone mine, supporting Western Ridge’s geological model and suggesting a larger mineralised system than previously recognised.
Importantly, drilling also identified a broad mineralised halo surrounding the higher-grade lodes, with silver extending into adjacent sedimentary rocks.
The system remains open along strike and at depth, providing additional exploration targets.
Western Ridge managing director Dr Matthew Cobb said the results represented an encouraging start to the company’s exploration program.
“The first drilling program at the historic mine in over 80 years has been successful, with broad silver intercepts and multiple intervals beneath historical workings, validating our model for repeated lode structures at depth,” Cobb said.
The company also reported anomalous tungsten mineralisation, including 1.52m at 0.143 per cent tungsten trioxide (WO₃) from 57.91m.
The discovery highlights potential for additional critical minerals exploration, particularly given Keystone’s proximity and geological similarities to the historic Springer tungsten mine.
Located along Nevada’s Pershing Trend near Winnemucca, Keystone occupies an established mining corridor prospective for silver, gold, lead, zinc and tungsten.
With assays pending from another seven drillholes, Western Ridge’s next catalysts will be further results defining the scale and continuity of mineralisation.
The company plans to use the findings to refine its geological model and guide additional drilling in 2027.
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