The Calvert Prospects is a tungsten mine located in Pima county, Arizona at an elevation of 3,100 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: 3,100 Feet (945 Meters)
Commodity: Tungsten
Lat, Long: 31.95111, -111.69028
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.
Calvert Prospects MRDS details
Site Name
Primary: Calvert Prospects
Secondary: Nelsons Pride Mine
Secondary: Terry Marie Nos 1 & 2 Prospects
Commodity
Primary: Tungsten
Location
State: Arizona
County: Pima
Land Status
Not available
Holdings
Not available
Workings
Type: Surface/Underground
Ownership
Not available
Production
Year: 1955
Material type: CONC W
Description: Ap_Grade: ^50% Wo3
Deposit
Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Year First Production: 1955
Discovery Year: 1953
Discovery Method: Unknown
Years of Production:
Organization:
Significant: N
Deposit Size: S
Physiography
Not available
Mineral Deposit Model
Not available
Orebody
Not available
Structure
Type: L
Description: Rocks Strike S 30 E, Dip 80 Sw.
Alterations
Alteration Type: L
Alteration Text: Epidote And Manganese Oxides Occur On Fracture Planes.
Rocks
Name: Granite
Role: Associated
Age Type: Host Rock
Age Young: Late Cretaceous
Analytical Data
Analytical Data: SAMPLES FROM PITS ASSAYED 0.01% WO3, & 0.019% WO3., SAMPLE ACROSS LENGTH OF FACE OF OPEN CUT ASSAYED 0.037% WO3
Materials
Ore: Scheelite
Gangue: Zircon
Comments
Comment (Location): UNSURVEYED; LOCATION PROJECTED BY U.S.B.M. ON SKETCH MAP.
Comment (Production): (1) PRODUCED FROM (2).; NO PRODUCTION FROM TERRY MARIE
Comment (Workings): PITS, ONE SHAFT, ONE DIAMOND-DRILLED HOLE.; ONE OPEN CUT
Comment (Geology): FORMATION IS SOMEWHAT SCHISTOSE, FELDSPATHIC, QUARTZITIC ROCK
Comment (Deposit): Discovery Year: 1953; 1954
References
Reference (Deposit): DALE, STEWART, AND MCKINNEY, 1960, TUNGSTEN DEPOSITS OF COCHISE, PIMA, AND SANTA CRUZ COUNTIES,: U.S.B.M. R.I. 5650
Reference (Deposit): 1956 RECON USBM, RI 5650.
Reference (Deposit): DALE, STEWART, AND MCKINNEY, 1960, TUNGSTEN DEPOSITS OF COCHISE, PIMA, AND SANTA CRUZ COUNTIES: U.S. BUREAU OF MINES R.I. 5650.
Reference (Production): DALE, ETAL, 1960, USBM RI 5650
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.
