Silverton Project (Nye County, Nevada, USA)
> SILVERTON PROJECT REPORT (PDF, 4.7MB)
Commodities: Ag, Au
Deposit types: Epithermal
Located northeast of Tonopah in the central Pancake Range. Travel east from Tonopah on HWY 6 for about 85 miles. 4.5 miles east of Black Rock Summit turn north on an unimproved dirt road and travel northwest for about 2 miles to the center of the property.
Since 2002 Newcrest has taken over 1,000 rock chip samples and drilled 42,983 ft in 29 RC holes.
Tuffs around the Paleozoic rocks are locally bleached and argillized (kaolinite). Both units are silicified along faults, generally as jasperoid bodies up to 30 ft wide. Jasperoid also forms flat-lying replacement horizons within volcanic beds. Additional silicification includes, stockwork silica veining and chalcedony +- stibnite-pyrite veins. One to two percent disseminated pyrite and minor stibnite occur in tuffaceous rocks over a 4mi2 area. Other mineralisation includes barite, gypsum, and alunite. Ore-grade gold values are generally associated with veins, strongly veined limestone, and argillized tuff along mineralized structures and adjacent to jasperoid. Most jasperoid bodies themselves contain only low-level gold.
The property contains a >100ppb Au rock chip anomaly measuring 2.5km x 3km. Au, Ag, As, and Hg mineralisation are broadly coincident. Within the anomaly, the most significant of three main zones is a NNE trending area >0.5g/t Au measuring 1km x 0.5km and centered on a 100m wide silicified contact between rhyolite to the east and carbonate rocks to the west.
Old vertical drilling on the southern end of the Silverton Shear returned several intervals of 5ft @ 1-5g/t Au and 100-600g/t Ag. The best Newcrest intercept is 25 feet @ 2.3g/t Au in rhyolite tuff.
No community or environmental issues are known to exist.
Location of the Gabbs, Crow Springs and Silverton Projects in Nevada, USA (Google Earth)
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