The Keystone Mine is a gold and copper mine located in Clark county, Nevada at an elevation of 4,800 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: 4,800 Feet (1,463 Meters)
Commodity: Gold, Copper
Lat, Long: 35.83639, -115.52194
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: Gold
Primary: Copper
Secondary: Silver
Location
State: Nevada
County: Clark
District: Goodsprings
Land Status
Land ownership: Private
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.
Holdings
Not available
Workings
Type: Underground
Ownership
Owner Name: Nevada-Keystone Mining Co.
Years: 1906 -
Production
Year: 1947
Time Period: 1902 - 1947
Material type: AU
Description: Cp_Grade: ^.073 Oz/Ton
Deposit
Record Type: Site
Operation Category: Past Producer
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
Not available
Structure
Type: R
Description: Large Scale Overthrusts
Type: L
Description: Broad Anticline, Keystone Thrust, Small Underground Faults
Alterations
Not available
Rocks
Name: Granite
Role: Associated
Age Type: Host Rock
Age Young: Late Devonian
Name: Granite
Role: Associated
Age Type: Associated Rock
Age Young: Paleocene
Analytical Data
Analytical Data: FINENESS OF THE GOLD 0.920 TO 0.930, UNCOMMONLY PURE
Materials
Ore: Chrysocolla
Ore: Gold
Ore: Limonite
Ore: Copper
Comments
Comment (Other Database): $600,000
Comment (Production): PRODUCTION PRIOR TO 1902 EST AT $380,000. BETWEEN 1931 - 1941 PRODUCTION INCLUDES ORE FROM BAREFOOT MINE. ORE SHOOTS MOST PRODUCTIVE WHERE VEIN WAS FLATTER THAN AVERAGE.
Comment (Workings): SOME OF THE SHOOTS ON THE UPPER CONTACT HAVE NOT BEEN EXPLORED BELOW THE 300 FOOT LEVEL.
Comment (Deposit): ALSO INCLUDES BAREFOOT MINE AS PART OF THE KEYSTONE GROUP ; INFO.SRC : 1 PUB LIT
Comment (Geology): ORE IS ALONG PORPHYRY/DOLOMITE CONTACT, IN VEINS IN PORPHYRY AND IN THE DOLOMITE AND ALONG FAULTS. GOLD CHEIFLY ASSOCIATED WITH LIMONITE STAINED GREENISH CLAY AND IN THE DARK CHERT.
References
Reference (Deposit): HEWETT, 1931 , GEOLOGY AND ORE DEPOSITS OF GOODSPRINGS QUAD, USGS PROF. PAPER 162 , P. 105 - 107 .
Reference (Deposit): LONGWELL, C. R., PAMPEYAN, E. H., BOWYER, B., ROBERTS, R. J., 1965 , GEOLOGY AND MINERAL DEPOSITS OF CLARK CO. NEV. BUREAU OF MINES, BULL. 62 , P. 191 .
Reference (Deposit): NBMG, 1994, MI-1993
Reference (Production): NBMG MI-1993
Nevada Gold
Nevada has a total of 368 distinct gold districts. Of the of those, just 36 are major producers with production and/or reserves of over 1,000,000 ounces, 49 have production and/or reserves of over 100,000 ounces, with the rest having less than 100,000 ounces. Read more: Gold Districts of Nevada.
