The Keystone Mine is a silver mine located in Yuma county, Arizona at an elevation of 1,401 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.
Mine Info
Elevation: 1,401 Feet (427 Meters)
Commodity: Silver
Lat, Long: 33.04417, -114.01778
Map: View on Google Maps
Satelite View
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.
Keystone Mine MRDS details
Site Name
Primary: Keystone Mine
Commodity
Primary: Silver
Tertiary: Manganese
Location
State: Arizona
County: Yuma
District: Castle Dome District
Land Status
Land ownership: Federal
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.
Administrative Organization: Kofa Game Range
Holdings
Not available
Workings
Not available
Ownership
Not available
Production
Not available
Deposit
Record Type: Site
Operation Category: Past Producer
Deposit Type: Vein
Operation Type: Unknown
Years of Production:
Organization:
Significant: N
Deposit Size: S
Physiography
General Physiographic Area: Intermontane Plateaus
Physiographic Province: Basin And Range Province
Physiographic Section: Sonoran Desert
Mineral Deposit Model
Not available
Orebody
Form: LINEAR
Structure
Not available
Alterations
Not available
Rocks
Name: Mafic Intrusive Rock
Role: Associated
Age Type: Associated Rock
Age Young: Pliocene
Name: Mafic Intrusive Rock
Role: Associated
Age Type: Host Rock
Age Young: Neoproterozoic
Analytical Data
Not available
Materials
Ore: Silver
Gangue: Quartz
Comments
Comment (Geology): THE VEIN HAS BEEN PROSPECTED BY A FEW SHALLOW WORKINGS WHICH REVEALED POCKETS OF RICH SILVER ORE CLOSE TO THE SURFACE
Comment (Production): NO PRODUCTION RECORD
Comment (Workings): WORKINGS CONSIST OF A FEW SHALLOW WORKING
References
Reference (Deposit): WILSON, E.D., 1933, GEOLOGY AND MINERAL DEPOSITS OF SOUTHERN YUMA COUNTY, ARIZONA: ARIZONA BUREAU OF MINES BULLETIN 134, P. 104
Reference (Other Database): CIMRI
Arizona Gold
"Where to Find Gold in Arizona" 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 Arizona. Read more: Where to Find Gold in Arizona.
