The Ninety-One Mine is a molybdenum mine located in Pinal county, Arizona at an elevation of 3,796 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: 3,796 Feet (1,157 Meters)
Commodity: Molybdenum
Lat, Long: 33.13833, -110.90778
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.
Ninety-One Mine MRDS details
Site Name
Primary: Ninety-One Mine
Commodity
Primary: Molybdenum
Tertiary: Vanadium
Tertiary: Copper
Tertiary: Lead
Location
State: Arizona
County: Pinal
District: Dripping Springs 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
Type: Underground
Ownership
Not available
Production
Not available
Deposit
Record Type: Site
Operation Category: Past Producer
Deposit Type: Replacement
Operation Type: Unknown
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: LENTICULAR BUNCHES
Structure
Type: L
Description: N80e Steeply Dipping Vein
Alterations
Not available
Rocks
Name: Quartzite
Role: Host
Age Type: Host Rock
Age Young: Neoproterozoic
Name: Quartzite
Role: Host
Age Type: Host Rock Unit
Age Young: Neoproterozoic
Analytical Data
Analytical Data: 3 SAMPLES BY AN RFC ENGINEER RAN 0.8, 0.16, AND 1.16% MO
Materials
Ore: Wulfenite
Comments
Comment (Geology): WULFENITE IS AN OXIDATION PRODUCT OCCURING IN JOINTS IN QUARTZITE
Comment (Location): INFO FROM LAND.ST :1979
Comment (Workings): SHAFT WAS APPARENTLY 150 FT DEEP WITH 3 LEVELS
Comment (Deposit): THIS RECORD WAS TAKEN FROM RECORD M000385 OF JAN WILT IN MOLYBDUMU M FILE, CONTACT PERSON T.G. THEODORE, USGS ; INFO.SRC : 1 PUB LIT; 2 UNPUB REPT
References
Reference (Deposit): RANSOME, 1923, USGS FOLIO 217
Reference (Deposit): ABM FILE DATA
Reference (Deposit): CORNWALL ET AL, 1971, USGS MAP GQ-1201
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.
