The Grand Pacific Mine is a copper mine located in Pinal county, Arizona at an elevation of 3,799 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: 3,799 Feet (1,158 Meters)
Commodity: Copper
Lat, Long: 33.26972, -111.07028
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.
Grand Pacific Mine MRDS details
Site Name
Primary: Grand Pacific Mine
Secondary: Pacific Mine
Secondary: Pacific Group
Commodity
Primary: Copper
Secondary: Silver
Secondary: Gold
Secondary: Manganese
Location
State: Arizona
County: Pinal
District: Pioneer 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
Owner Name: Juan Ortega
Years: 1955 -
Owner Name: Fredricks Smith
Years: 1951 -
Production
Not available
Deposit
Record Type: Site
Operation Category: Producer
Operation Type: Unknown
Year First Production: 1916
Year Last Production: 1955
Discovery Year: 1900
Discovery Method: Ore-Mineral In Place
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
Structure
Type: R
Description: Nw Trending Fault Systems, Ne Trending Fault Systems
Type: L
Description: Nw Trending Iron Cap Fault, Ne Trending Sandal Fault
Alterations
Alteration Type: L
Alteration Text: Near Surface Oxidation
Rocks
Name: Diabase
Role: Associated
Age Type: Associated Rock
Age Young: Late Cambrian
Name: Diabase
Role: Associated
Age Type: Host Rock
Age Young: Mississippian
Analytical Data
Not available
Materials
Ore: Cuprite
Gangue: Calcite
Gangue: Quartz
Gangue: Pyrite
Comments
Comment (Geology): ALTHOUGH THERE ARE NO INTRUSIVES AT THE SURFACE HERE, MINERALIZATION IS ASSOCIATED WITH CRET-PALEO INTRUSIVE AND FAULTING EPISODES.
Comment (Location): INFO FROM LAND.ST :(1979)
Comment (Development): INCLUDES 35 CLAIMS; OTHER PREVIOUS OWNERS/OPERATORS INCLUDE GRAND PACIFIC COPPERCO., GRAND PACIFIC MINING CO.
Comment (Deposit): ORE DEPOSITS IN E-W FAULT ZONES
Comment (Workings): MAIN DEVELOPMENT BY 3 TUNNELS WHICH INTERCONNECT; THERE IS ALSO A SHAFT; MAIN WORKINGS ARE ON SANDAL FAULT
References
Reference (Deposit): ABGMT CLIPPINGS FILES
Reference (Deposit): ABGMT-USBM FILE DATA
Reference (Deposit): USBM FILES
Reference (Deposit): SHORT, M.N., GEOLOGY AND ORE DEPOSITS OF THE SUPERIOR MINING AREA, ARIZONA, 1943, ABM BULLETIN 151, P. 158
Reference (Deposit): FARNHAM, L.L., MANGANESE DEPOSITS OF EASTESRN ARIZONA, 1961, USBM IC 7990, P. 124, 126, 141
Reference (Deposit): RANSOME, F.L., DEPOSITS OF MANGANESE ORE IN ARIZONA, 1919, USGS 710 P 165
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.
