The Jean E Group is a manganese mine located in Pima county, Arizona at an elevation of 3,150 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: 3,150 Feet (960 Meters)
Commodity: Manganese
Lat, Long: 32.02889, -111.59722
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.
Jean E Group MRDS details
Site Name
Primary: Jean E Group
Secondary: Black Bear Nos. 1 and 2
Commodity
Primary: Manganese
Tertiary: Copper
Tertiary: Zinc
Location
State: Arizona
County: Pima
Land Status
Not available
Holdings
Not available
Workings
Type: Surface/Underground
Ownership
Not available
Production
Year: 1956
Time Period: 1954 - 1956?
Material type: MN
Description: Cp_Grade: ^Conc. Avg. 43.5 % Mn
Deposit
Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Year First Production: 1954
Discovery Year: 1938
Discovery Method: Unknown
Years of Production:
Organization:
Significant: N
Deposit Size: S
Physiography
Not available
Mineral Deposit Model
Not available
Orebody
Form: IRREGULAR VEINLETS IN FRACTURE ZONE
Structure
Type: L
Description: Northwest Trending Fracture Zone.
Alterations
Not available
Rocks
Name: Rhyolite
Role: Associated
Age Type: Associated Rock
Age Young: Pliocene
Analytical Data
Not available
Materials
Not available
Comments
Comment (Commodity): CU, ZN OCCUR IN NEARBY SHAFT; ORE HAS LOW IRON CONTENT.
Comment (Production): CONCENTRATED IN JIG PLANT AT TUCSON AND CONCENTRATE TRUCKED TO DEMING PURCHASING DEPOT.
Comment (Workings): PROPERTY IS MOSTLY DEVELOPED BY OPEN CUTS AND PITS; A FEW SHAFTS ARE FOUND.
Comment (Geology): GEOL.DESC: PROBABLY SIZEABLE PODS OF MANGANESE ORE WAS MINED FROM INTERSECTION OF N80E FAULT AND NW FRACTURE ZONE.
Comment (Deposit): NUMEROUS FRACTURES IN ZONE CONTAIN NARROW, DISCONTINUOUS, HIGH-GRADE VEINLETS OF HARD MANGANESE OXIDES WITH OCCASIONAL REPLACEMENTS OF SOFTER WAD MANGANESE IN SHATTERED AREAS BETWEEN FRACTURES.
References
Reference (Deposit): FARNHAM, STEWART AND DE LONG, 1961, MANGANESE DEPOSITS OF EASTERN ARIZONA: USBM I.C. 7990, P. 115 - 116.
Reference (Deposit): NOWLAN, G.A., HAXEL, G.B., HANNA, W.F., PITKIN, J.A., DIVELEY-WHITE, D.V., MCDONNELL, J.R., JR., AND LUNDBY, WILLIAM, 1989, MINERAL RESOURCES OF THE BABOQUIVARI PEAK AND COYOTE MOUNTAINS WILDERNESS STUDY AREAS, PIMA COUNTY, ARIZONA: U.S. GEOLOGICAL SURVEY BULLETIN 1702, 30 P.
Reference (Deposit): FARNHAM, L.L., STEWART, L.A., AND DE LONG, C.W., 1961, MANGANESE DEPOSITS OF EASTERN ARIZONA: U.S. BUREAU OF MINES INFORMATION CIRCULAR IC 7990, 178 P..
Reference (Deposit): 1941 DIREXPL U.S. BUREAU OF MINES, TRENCHING PROGRAM
Reference (Deposit): 1956 RECON U.S. BUREAU OF MINES;IC 7990
Reference (Deposit): 1954 DIREXPL DRAKE MINED ORE
Reference (Other Database): CIMRI
Reference (Production): USBM IC 7990; NOWLAN AND OTHERS, 1989.
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.
