The Exposed Reef is a silver, tungsten, and gold mine located in Cochise county, Arizona at an elevation of 7,316 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: 7,316 Feet (2,230 Meters)
Commodity: Silver, Tungsten, Gold
Lat, Long: 31.4267, -110.28810
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.
Exposed Reef MRDS details
Site Name
Primary: Exposed Reef
Secondary: Sitruc
Secondary: Tungsten Reef Mine
Secondary: Reef Mine
Secondary: Reef
Secondary: Coronado N.F. Part 8.
Commodity
Primary: Silver
Primary: Tungsten
Primary: Gold
Secondary: Lead
Secondary: Zinc
Secondary: Copper
Tertiary: Tellurium
Location
State: Arizona
County: Cochise
District: New Reef
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
Not available
Ownership
Not available
Production
Year: 1956
Time Period: 1955-1956
Description: 1955-56 6838 Lb At 74.96% Wo3
Year: 1954
Time Period: 1953-1954
Description: 1953-54 991 St Crushed/Sized Quartz.
Year: 1942
Time Period: 1934-1942
Description: 1934-42 183468 Lb At 71% Wo3.
Year: 1918
Time Period: 1916-1918
Description: 1916-18 64 St At 71.6% Wo3.
Year: 1906
Time Period: 1870'S-1906
Description: 1870'S-1906: Minor Au/Ag Production.
Deposit
Record Type: Site
Operation Category: Past Producer
Operation Type: Surface-Underground
Mining Method: Unknown
Year First Production: 1870
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
Not available
Structure
Not available
Alterations
Not available
Rocks
Not available
Analytical Data
Not available
Materials
Unknown: Chalcopyrite
Unknown: Galena
Unknown: Gold
Unknown: Quartz
Unknown: Scheelite
Unknown: Sphalerite
Comments
Not available
References
Reference (Deposit): DALE, V.B. ET AL, 1960, USBM RI 5650, P. 3-4.
Reference (Deposit): PHILLIPS, K.A., 1987, ADMMR MINERAL REPORT 4, P. 156.
Reference (Deposit): WEBER, R.H., 1950, GEOL EAST CENTRAL PORTION HUACHUCA
Reference (Deposit): MTNS., UNIV AZ PHD DISSERTATION, P. 122-150.
Reference (Deposit): KEITH S B 1973 ARIZ BUR MINES BULL 187 P 67
Reference (Deposit): TUFTIN, S.E., ARMSTRONG, R.C., 1994, USBM OFR MLA 1-94.
Reference (Deposit): ADDNL HOLDING IN T23S R20E E CEN SEC 15
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.
