Thunder Mountain controls forty unpatented lode mining claims, covering approximately 800 acres, near Clover Mountain in Owyhee County, Idaho. Historic records indicate limited production of gold and silver ore occurred in the Clover Mountain area in 1917.

The claims cover a large area of hydrothermally-altered, fractured, and brecciated intrusive igneous and extrusive volcanic rocks with elevated gold and related silver-arsenic-antimony-mercury-mineralization. Anomalous gold values obtained from rock chip samples ranged from non-detect to 0.058 ounces, plus anomalous values in claim corner soil samples. The anomalous values appear to be associated with stockwork veining in a granitic stock which has been intruded by northeast and northwest trending rhyolitic dikes. The granitic intrusive is overlain by locally silicified rhyolitic tuff. Anomalous base metal values ranging from a trace to 1.25% copper and from a trace to 1.54% zinc were obtained in areas of veining near the contact between the granitic stock and northwest trending rhyolitic dikes.