USA - NEVADA, EXCELSIOR SPRINGS GOLD
Excelsior Springs is located in the Walker–Lane tectonic zone of southern Nevada, which hosts a number of large historic gold mines. Total gold production from the zone exceeded 20 million ounces (Moz), with notable deposits including Goldfield (5Moz), Bullfrog (2Moz), Tonopah (2Moz), Mineral Ridge (1.5Moz) and Comstock (8Moz Au, 200Moz Ag). The Excelsior Springs property covers a 3km long, 300m wide zone of stockwork quartz vein–type gold mineralization hosted by altered limestone and calcareous sediments. Exploration over the property by Nubian has been restricted to analysis of 236 surface rock chip samples, which defined four separate areas of mineralization with values from 1 to 20 g/t Au. Only one of these four areas, the Buster mine, had been drilled previously. At the Buster mine historic RC percussion drilling was undertaken over a strike length of 300m and probed to depths up to 120m. Most of the holes that targeted the main mineralized zone intersected gold mineralization.
DUNFEE – ESMERALDA COUNTY - NEVADA
PALMETTO, ESMERALDA COUNTY - NEVADA
This property (2 claims) is about five miles northeast of Excelsior Springs and is geologically similar, possibly without the complicated thrust faulting. Near the eastern nose of the Palmetto pluton, Precambrian and Cambrian sediments are cut by late-stage rhyolites, which control quartz veins carrying gold and silver. Veins in outcrop and on dumps contain up to 0.05 opt Au and 10 opt Ag. Hydrothermal alteration extends over 1.5 square miles, and there is potential for a circular domal feature which creates a window of older, mineralized rocks within post-mineral Tertiary volcanics.”