The Cobre Grande Mine. is a copper and lead mine located in Graham county, Arizona at an elevation of 6,601 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: 6,601 Feet (2,012 Meters)
Commodity: Copper, Lead
Lat, Long: 32.97639, -110.29167
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.
Cobre Grande Mine. MRDS details
Site Name
Primary: Cobre Grande Mine.
Commodity
Primary: Copper
Primary: Lead
Tertiary: Iron
Tertiary: Silver
Location
State: Arizona
County: Graham
District: Aravaipa District
Land Status
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.
Holdings
Not available
Workings
Type: Underground
Ownership
Owner Name: Snell, Elliot, Fisk, And Alderman
Home Office: Globe, AZ
Years: 1920 -
Production
Not available
Deposit
Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Year First Production: 1916
Year Last Production: 1957
Discovery Year: 1905
Discovery Method: Ore-Mineral In Place
Years of Production:
Organization:
Significant: N
Deposit Size: S
Physiography
General Physiographic Area: Intermontane Plateaus
Physiographic Province: Basin And Range Province
Physiographic Section: Mexican Highland
Mineral Deposit Model
Not available
Orebody
Form: TABULAR
Structure
Type: R
Description: Block Faulting Trending Nnw. ; Reg.Trends: Minor Pre-Cretaceous E And Ne Trending Folds And Major Post-Cretaceous Nnw Trending Faults.
Type: L
Description: Faults.
Alterations
Alteration Type: L
Alteration Text: Oxidation Of Minerals,Silicification.
Rocks
Name: Diorite
Role: Associated
Age Type: Associated Rock Unit
Age Young: Late Cretaceous
Name: Diorite
Role: Associated
Age Type: Associated Rock
Age Young: Pliocene
Name: Diorite
Role: Associated
Age Type: Host Rock
Age Young: Pennsylvanian
Analytical Data
Not available
Materials
Ore: Tenorite
Ore: Chalcanthite
Ore: Chalcopyrite
Gangue: Epidote
Gangue: Chlorite
Gangue: Quartz
Gangue: Pyrite
Gangue: Garnet
Gangue: Specularite
Gangue: Calcite
Unknown: Magnetite
Comments
Comment (Development): PAST OPERATORS INCLUDE COBRE GRANDE CO., JULIUS RISER, AND DUVAL SULPHUR AND POTASH CO.
Comment (Geology): GEOL.DESC: LIMESTONE REPLACED IN ZONES BOTH ACROSS AND PARALLEL TO BEDDING. SILICIC DIKES INTRUDE AREA. ENTIRE AREA IS CLOSELY FAULTED, HIGHLY ALTERED. RELATIONSHIPS OBSCURE.
Comment (Deposit): SEVERAL ZONES OF MINERALIZATION OCCUR. MORE THAN ONE VEIN.
Comment (Workings): ONE ADIT 700 FT. LONG (COWBOY TUNNEL.) RAISES, WINZES UP TO 30 FT. LONG.
References
Reference (Deposit): USGS PP 461
Reference (Deposit): USGS BULL 763
Reference (Deposit): USBM-ABGMT FILE DATA
Reference (Deposit): 1925 GEOLMAP ROSS, C.P. BULL. 763.
Reference (Deposit): 1958 DIREXPL DUVAL SULPHUR AND POTASH CO. BULLDOZING.
Reference (Deposit): 1964 GEOLMAP SIMONS, F.S. PROF. PAPER 461.
Reference (Production): ROSS, 1925.
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.
