El Oso Mine

The El Oso Mine is a tungsten mine located in Maricopa 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

Name: El Oso Mine  

State:  Arizona

County:  Maricopa

Elevation:

Primary Mineral: Tungsten

Lat, Long: 33.75361, -111.37694

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.


Satelite image of the El Oso Mine

El Oso Mine MRDS details

Site Name

Primary: El Oso Mine
Secondary: New Discovery
Secondary: Harrison


Commodity

Primary: Tungsten
Tertiary: Molybdenum


Location

State: Arizona
County: Maricopa
District: Four Peaks District


Land Status

Land ownership: National Forest
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: Tonto National Forest


Holdings

Not available


Workings

Type: Surface/Underground


Ownership

Owner Name: Marvin Harrison
Home Office: Of Fresno, Ca
Years: 1961 -


Production

Not available


Deposit

Record Type: Site
Operation Category: Past Producer
Deposit Type: Vein
Operation Type: Unknown
Discovery Year: 1941
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: LINEAR

Form: LINEAR


Structure

Type: L
Description: Granite Cut By A Mile Wide Belt Of Granite Porphyry. Fissures Stri King N-S, N20-25e, N45e, N65w


Alterations

Not available


Rocks

Name: Pegmatite
Role: Host
Age Type: Host Rock
Age Young: Neoproterozoic


Analytical Data

Not available


Materials

Ore: Pyrite
Ore: Molybdenite
Ore: Wolframite
Ore: Scheelite
Gangue: Quartz
Gangue: Tourmaline
Gangue: Fluorite


Comments

Comment (Location): CLAIMS EXTEND INTO MARICOPA CO.

Comment (Commodity): TUNGSTEN MINERALS NOT CONCENTRATED SUFFICIENTLY TO CONSTITUTE ORE EXCEPT IN A FEW PLACES

Comment (Workings): 235 FT LONG ADIT WITH 200 FT OF CROSSCUTS. SEVERAL SHORT ADITS AN D SHALLOW SHAFTS, OPEN CUTS AND TRENCHES

Comment (Deposit): THIS REPORT REPRESENTS A MERGER OF ORIGINAL RECORD M002890 WITH RE CORD M030451 OF JAN WILT IN MOLYBDENUM FILE, CONTACT PERSON T.G. THEOR ORE, USGS ; INFO.SRC : 1 PUB LIT; 2 UNPUB REPT

Comment (Production): ONLY RECORDED PRODUCTION IS 24 UNITS OF WO3 IN 1953 & 1954. OTHER UNRECORDED PRODUCTION WAS LESS THAN A FEW TONS OF HAND SORTED ORE

Comment (Development): 17 UNPATENTED CLAIMS

Comment (Deposit): 2 SETS OF VEINS; N PART N75W DIP N, 5 PART S24W DIP W. SOME VEINS HAVE BEEN TRACED FOR 2000 FT ALTHOUGH NOT ALL. MINERALIZED VEINS AS A WHOLE AVERAGE 6 IN. WIDE, WIDE SPOTS OR SHOOTS BEING 30 FT LONG, 5 FT WIDE


References

Reference (Deposit): WILSON, 1941, ABM BULL 148, P. 31.

Reference (Deposit): DALE, 1961, USBM IC 8078.

Reference (Deposit): ADMR FILE DATA.

Reference (Other Database): CIMRI

Reference (Production): DALE, 1961, P. 12


Arizona Gold

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"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 at Where to Find Gold in Arizona.