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
Dunfee gold prospect is in west-central Esmeralda County, Nevada, 50 km SSW of Goldfield and 5 km SE of the town of Gold Point. Nubian holds 22 claims. Outcrops of Precambrian Wyman metasediments overlie the Sylvania pluton and are in turn overlain by thrust sheets of Precambrian Reed Dolomite. The area is on a N75W-trending structural zone defined by numerous prospect pits and shafts that explored a quartz-gold vein zone to shallow depth that follows the structure. Depth to underlying intrusive rocks of the Sylvania pluton is expected to be in range of 100-150m. Other veins in the Gold Point region, indicate the width of the vein and gold content improve where the veins pass from meta-sediments into plutonic intrusive rocks which were the source of the gold.
Mapping and sampling has confirmed existence of a broad domal uplift believed to be caused by an apophysis of the Sylvania pluton, which is a possible source of the hydrothermal alteration and gold veins of the area. The domed area, thought to be underlain by a gold porphyry system, is about 1.5 km in diameter. Presence of alteration and gold-quartz veins at surface, with grades of up to 1.0 opt Au, suggest a bulk-tonnage mineable, gold porphyry system may exist at Dunfee.
PALMETTO, ESMERALDA COUNTY
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 extendsover 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.”
COPPER HILLS GOLD PROJECT
The Company owns 10 unpatented claims in Socorro County, New Mexico on an extension of the Morenci copper trend from Arizona.