The San Antonio mine was active from the early 1900’s to the 1940’s, and the mine area received attention again in the 1980’s from a number of exploration companies including Newmont and Echo Bay. Altogether, approximately 190 holes and 54,000’ were drilled in the 1980’s, with gold intercepts greater than 1 opt encountered in several drill holes.
During this time, a shallow oxide gold resource was calculated and outlined, but never extracted. The historic resource outlined includes a West, Central, and East target which totals greater than 50,000 ounces of gold (see Map 2 below; reference is to an internal mining report by Peter Hahn to Budge Mining Ltd. dated February 17, 1987). The resource was never made 43-101 compliant as the data predates the practice.
The deposit is hosted in a series of Oligocene age volcanic rocks overlying Paleozoic strata, and younger Miocene age intrusions. The target is a shallow, low sulfidation oxide gold system with strong structural control. The mineralization is associated with silicification, brecciation, and iron oxides.