The Mcmillan Prospect is a copper mine located in Yuma county, Arizona at an elevation of 1,401 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: 1,401 Feet (427 Meters)
Commodity: Copper
Lat, Long: 32.38861, -113.90917
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.
Mcmillan Prospect MRDS details
Site Name
Primary: Mcmillan Prospect
Commodity
Primary: Copper
Secondary: Uranium
Location
State: Arizona
County: Yuma
District: La Posa District
Land Status
Land ownership: Federal
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.
Administrative Organization: Luke Air Force Base
Holdings
Not available
Workings
Type: Surface/Underground
Ownership
Not available
Production
Not available
Deposit
Record Type: Site
Operation Category: Occurrence
Deposit Type: Vein
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
Form: IRREGULAR STRINGERS
Structure
Not available
Alterations
Not available
Rocks
Name: Pegmatite
Role: Associated
Age Type: Host Rock
Age Young: Late Cretaceous
Name: Pegmatite
Role: Associated
Age Type: Associated Rock
Age Young: Pliocene
Analytical Data
Analytical Data: SELECTED SAMPLE CONTAINED 0.034% U, 7.69% CU
Materials
Ore: Chrysocolla
Ore: Malachite
Ore: Limonite
Comments
Comment (Geology): AT SOME PLACES IN THE MINE WORKINGS AND ON THE DUMPS, RADIOACTIVITY IS AS MUCH AS FIVE TIMES THE BACKGROUND RADIOACTIVITY. A STOCKPILE OF COPPER-STAINED MATERIAL PRESUMABLY MINED FROM ONE OF THE ADITS GAVE READINGS OF NEARLY 0.5 MR PER HR ON A SCINTILLATION METER. ALTHOUGH IT IS POSSIBLE THAT THE MCMILLIAN PROSPECT CONTAINS LOCAL CONCENTRATIONS OF URANIUM ORE, MOST OF THE RADIOACTIVE ROCK ON THE PROPERTY IS BELOW COMMERCIAL GRADE.
Comment (Deposit): DUPLICATE RECORD M002015 HAS BEEN DELETED.
Comment (Workings): PROPERTY DEVELOPED BY SHALLOW WORKINGS, TWO SHORT ADITS, AND AN OPENCUT.
Comment (Production): NO PRODUCTION RECORD
References
Reference (Deposit): WILSON, E.D., 1933, GEOLOGY AND MINERAL DEPOSITS OF SOUTHERN YUMA COUNTY, ARIZONA: ARIZONA BUREAU OF MINES BULLETIN 139, P. 163.
Reference (Deposit): GRADGER, H.C., RAUP, R.B., 1962, RECONNAISSANCE STUDY OF URANIUM DEPOSITS IN ARIZONA: U.S.G.S. BULLETIN 1147-A, P. 48.
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.
