The Union Keystone Mine is a gold mine located in Sierra county, California at an elevation of 5,561 feet.
About the MRDS Data:
All mine locations were obtained from the USGS Mineral Resources Data System. The locations and other information in this database have not been verified for accuracy. It should be assumed that all mines are on private property.
Name: Union Keystone Mine
Elevation: 5,561 Feet (1,695 Meters)
Lat, Long: 39.7472, -120.89580
Map: View on Google Maps
MRDS mine locations are often very general, and in some cases are incorrect. Some mine remains have been covered or removed by modern industrial activity or by development of things like housing. The satellite view offers a quick glimpse as to whether the MRDS location corresponds to visible mine remains.
Union Keystone Mine MRDS details
Primary: Union Keystone Mine
Land ownership: National Forest
Note: the land ownership field only identifies whether the area the mine is in is generally on public lands like Forest Service or BLM land, or if it is in an area that is generally private property. It does not definitively identify property status, nor does it indicate claim status or whether an area is open to prospecting. Always respect private property.
Record Type: Site
Operation Category: Occurrence
Operation Type: Surface-Underground
Mining Method: Unknown
Years of Production:
General Physiographic Area: Pacific Mountain System
Physiographic Province: Cascade-Sierra Mountains
Physiographic Section: Sierra Nevada
Mineral Deposit Model
Reference (Deposit): CALIF JOUR V 38,1942,P 66;
"Where to Find Gold in California" looks at the density of modern placer mining claims along with historical gold mining locations and mining district descriptions to determine areas of high gold discovery potential in California. Read more at Where to Find Gold in California.