Of the over 3,000 USGS mine records in San Bernardino County, 1,585 list gold as a primary commodity. The rest report a wide array of commodities, including silver, lead, zinc, and copper.
WMH Mine Discovery Tools for Google Earth are available for San Bernardino county
According to the USGS, "Gold deposits are scattered throughout San Bernardino County. They occur in the Slate Range in the northwest, the Whipple Mountains in the southeast, the San Gabriel Mountains in the southwest, and the Clark Mountain area in the northeast" - read the full USGS report on San Bernardino gold mines here.
