The Simplot Mine is a copper, lead, silver, and zinc mine located in Santa Cruz county, Arizona.
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:
Commodity: Copper, Lead, Silver, Zinc
Lat, Long: 31.38583, -110.69861
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.
Simplot Mine MRDS details
Site Name
Primary: Simplot Mine
Secondary: Part of Duquesne-Washington Group
Commodity
Primary: Copper
Primary: Lead
Primary: Silver
Primary: Zinc
Secondary: Molybdenum
Location
State: Arizona
County: Santa Cruz
District: Washington Camp 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
Not available
Ownership
Not available
Production
Not available
Deposit
Record Type: Site
Operation Category: Occurrence
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: Sonoran Desert
Mineral Deposit Model
Not available
Orebody
Not available
Structure
Type: R
Description: Mineral Deposits Of Washington-Duquesne Area Occupy A Limestone-Sed Iment Belt (2.5 Mi By 1.25 Mi) Surrounded By Igneous Rocks Which Also Form Detached Masses And Dikes Within Belt
Type: L
Description: Post Mineral Faulting Displacing Ore Horizons Tens Of Feet, Nw Plu Nging Anticline; 2 Upper Ore Zones Thicken And Locally Merge To Form O Ne Ore Zone Dipping 50-70 Ne Along Axis Of A Nw Plunging Anticline
Alterations
Not available
Rocks
Name: Andesite
Role: Associated
Age Type: Associated Rock
Age Young: Pliocene
Name: Andesite
Role: Associated
Age Type: Host Rock Unit
Age Young: Late Permian
Name: Andesite
Role: Associated
Age Type: Associated Rock Unit
Age Young: Late Jurassic
Analytical Data
Analytical Data: ZN:CU=4.0, ZN:PB=4.8, AG:CU=1.6, PB:CU=0.8, AG:PB=1.9, ZN:AG=2.5
Materials
Ore: Digenite
Ore: Argentite
Ore: Pyrite
Ore: Sphalerite
Ore: Molybdenite
Ore: Galena
Ore: Pyrrhotite
Ore: Chalcopyrite
Gangue: Quartz
Gangue: Garnet
Comments
Comment (Deposit): THIS REPORT WAS TAKEN FROM RECORD M030398 OF JAN WILT IN MOLYBDENU M FILE, CONTACT PERSON T.G. THEODORE, USGS. SEE ALSO INDIANA MINE. ; INFO.SRC : 1 PUB LIT; 2 UNPUB REPT
Comment (Location): 900 FT WSW OF KANSAS SHAFT, 1300 FT NNE OF MAINE SHAFT; ADJACENT O N NE TO INDIANA MINE SHAFT ; INFO FROM LAND.ST :1979
Comment (Development): J.R. SIMPLOT CO BEGAN MINING OPERATIONS IN WASHINGTON CAMP AREA I N EARLY 1960'S; ASSUMED OWNERSHIP OF INDIANA, HOLLAND, AND BONANZA MIN ES AROUND 1966; HOLLAND MINE CURRENTLY OWNED BY ROSARIO EXPLORATION CO
Comment (Deposit): 3 PRINCIPAL ZONES OF SULFIDE MINERALIZATION; UPPER TWO ZONES ARE 1-10 FT THICK AND ARE SEPARATED BY 0-20 FT OF SKARN AND MARBLE; WEST O F THE SIMPLOT SHAFT THESE ZONES STRIKE N AND DIP 60-80W; LOWEST ORE ZO NE OCCURS AT TOP OF 50 FT THICK DACITE SILL
Comment (Workings): SHAFTS (2)
Comment (Geology): MOLYBDENITE REPLACES GARNET, CHALCOPYRITE, & GALENA; FREQUENT POST -MINERALIZATION FAULTING HAS DISPLACED ORE HORIZON TENS OF FEET; HOWEV ER, CONTINUOUS MINERALIZATION CAN BE TRACED UP TO 300 FT ALONG STRIKE.
References
Reference (Deposit): LEHMAN, 1978, PH.D. THESIS, UNIV OF AZ
Reference (Deposit): SIMONS, 1974, USGS MAP I-762
Reference (Deposit): KEITH, 1975, ABM BULL 191
Reference (Deposit): SCHRADER, 1915, USGS BULL 582
Reference (Deposit): ABGMT FILE DATA
Reference (Deposit): ADMR FILE DATA, J.R. SIMPLOT CO. PROPERTY
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.
