Bobtail Mine

The Bobtail Mine is a gold, silver, and copper mine located in Gila county, Arizona at an elevation of 5,000 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

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.

Site Name

Primary: Bobtail Mine
Secondary: Mariana Missouri
Secondary: Virginia

Commodity

Primary: Gold
Primary: Silver
Primary: Copper
Secondary: Tungsten
Tertiary: Lead
Tertiary: Zinc

Location

State: Arizona
County: Gila
District: Pioneer 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: Unknown

Ownership

Not available

Production

Year: 1945
Time Period: 1940 - 1945
Material type: AG
Description: Cp_Grade: ^12.06 Oz/Ton
Year: 1945
Time Period: 1940 - 1945
Material type: CU
Description: Cp_Grade: ^2.8% Cu
Year: 1945
Time Period: 1940 - 1945
Material type: AU
Description: Cp_Grade: ^0.11 Oz/Ton

Deposit

Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Year Last Production: 1950
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: PINCH AND SWELL

Structure

Not available

Alterations

Not available

Rocks

Name: Diorite
Role: Associated
Age Type: Associated Rock Unit
Age Young: Paleocene

Name: Diorite
Role: Associated
Age Type: Associated Rock
Age Young: Paleocene

Name: Diorite
Role: Associated
Age Type: Host Rock
Age Young: Neoproterozoic

Name: Diorite
Role: Associated
Age Type: Host Rock Unit
Age Young: Neoproterozoic

Analytical Data

Not available

Materials

Ore: Silver
Ore: Huebnerite
Ore: Scheelite
Ore: Gold
Ore: Chalcopyrite
Ore: Pyrite
Ore: Galena
Ore: Sphalerite

Comments

Comment (Commodity): THE BOBTAIL VEIN CARRIES LITTLE OR NO TUNGSTEN VALUE. THE TUNGSTEN VEIN CONTAINS SPARSE TUNGSTEN MINERALS

Comment (Production): NO TUNGSTEN PRODUCTION IS KNOWN TO HAVE BEEN RECORDED.

Comment (Development): OPERATORS INCLUDED PANDORA COPPER CO., 1915, BOBTAIL DEVELOPMENT CO., KILPATRICK BROTHERS, TULSA MINERALS CORP. 1945-1947, ROSENGARTEN 1926, C. H. FOERESTER AND J. BELCHER 1940.

Comment (Workings): SEVERAL SHALLOW PITS AND OPEN CUTS, AND TWO SHORT ADITS ARE ALSO LOCATED ON THE PROPERTY, INCLUDES INCLINED SHAFT, 75 FT AND ADIT, 235 FT LONG.

Comment (Geology): NO DETAILED GEOLOGIC MAP OF AREA AVAILABLE. NE-TRENDING ETERT SCHULTZE GRANITE DIKES ARE COMMON THROUGHOUT DISTRICT, AS ARE OUTCROPS OF MADERA DIORITE(PREC). MINERALIZATION ASSOCIATED WITH ETERT SCHULTZE GRANITE INTRUSTION.

References

Reference (Deposit): DALE, V.B., 1961, TUNGSTEN DEPOSITS OF GILA, YAVAPAI, MOHAVE COUNTIES, ARIZONA: USBM INFORMATION CIRCULAR 8078, P. 3.

Reference (Deposit): USGS BULL 1141-H, 1965, PLATE I.

Reference (Deposit): ABGMT CLIPPINGS FILE.

Reference (Deposit): ABGMT-USBM FILE DATA.

Reference (Production): USBM INFORMATION CIRCULAR 8078, P. 4.

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.