The Golden Gate is a manganese mine located in Cochise county, Arizona.
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
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.
Golden Gate MRDS details
Site Name
Primary: Golden Gate
Commodity
Primary: Manganese
Secondary: Copper
Location
State: Arizona
County: Cochise
District: Warren District
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
Not available
Ownership
Owner Name: Phelps Dodge Corp.
Production
Not available
Deposit
Record Type: Site
Operation Category: Past Producer
Deposit Type: Replacement
Operation Type: Unknown
Discovery Method: Ore-Mineral In Place
Years of Production:
Organization:
Significant: N
Deposit Size: M
Physiography
General Physiographic Area: Intermontane Plateaus
Physiographic Province: Basin And Range Province
Physiographic Section: Mexican Highland
Mineral Deposit Model
Model Name: Replacement Mn
Orebody
Form: IRREGULAR
Structure
Type: R
Description: Pre-Mineralization Faulting And Tilting
Type: L
Description: Main Fault Directions, N10w To N40e, S30w To N50w, Pre-Mineralization
Alterations
Alteration Type: L
Alteration Text: Gossan With Mn And Fe Oxides Induced By Hydrothermal Metamorphism
Rocks
Name: Granite
Role: Associated
Age Type: Associated Rock Unit
Age in Years: 170.500000+-7.500000
Age Young: Jurassic
Analytical Data
Not available
Materials
Ore: Chalcopyrite
Ore: Chalcocite
Ore: Bornite
Gangue: Quartz
Gangue: Pyrite
Comments
Comment (Location): SE OF QUEEN HILL.
Comment (Production): SHIPMENTS MADE DURING WORLD WAR I, THE BULK OF THE PRODUCTION OF 800 TO 900 TONS WAS SHIPPED TO BESSEMER, ALABAMA
Comment (Deposit): MOSTLY HARD MANGANESE OXIDES WITH COPPER STAINING ALONG IRREGULAR FRACTURE ZONE CUTTING LIMESTONE.
Comment (Workings): LARGEST OPEN CUT WAS ABOUT 150 FT LONG, 3 TO 5 FT WIDE, AND 25 FT OR MORE IN DEPTH.
Comment (Geology): DEPOSIT IS CLOSE TO THE CONTACT BETWEEN THE NACO AND ESCABROSA LIMESTONES.
References
Reference (Deposit): WILSON AND BUTLER, 1930, ABM BULL 127, P. 39.
Reference (Deposit): FARNHAM, USBM IC 7990, P. 15.
Reference (Deposit): USGS BULL. 710, 1920, PL. IV, P. 107. ARIZ. B. M. BULL. 127, 1930, P. 39.
Reference (Deposit): KEITH, S.B., 1973, ARIZONA BUREAU OF MINES BULLETIN 187, P. 87.
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.
