Amster Prospect

The Amster Prospect is a manganese mine located in Gila county, Arizona at an elevation of 3,970 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: Amster Prospect

Commodity

Primary: Manganese

Location

State: Arizona
County: Gila
District: Globe Hills 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.

Holdings

Not available

Workings

Type: Surface

Ownership

Owner Name: Mrs. E. A. Borge
Years: 1961 -

Production

Year: 1954
Material type: MN
Description: Ap_Grade: ^23.8% Mn

Deposit

Record Type: Site
Operation Category: Producer
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: Mexican Highland

Mineral Deposit Model

Not available

Orebody

Form: IRREGULAR

Structure

Not available

Alterations

Not available

Rocks

Name: Diabase
Role: Associated
Age Type: Associated Rock
Age Young: Neoproterozoic

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

Analytical Data

Not available

Materials

Ore: Pyrolusite
Ore: Wad
Gangue: Calcite
Gangue: Quartz

Comments

Comment (Deposit): ANOTHER MANGANIFEROUS OCCURENCE, PROBABLY ON THE ADJOINING MORLAY CLAIMS, CROPS OUT ABOUT 700 FT. NORTHEAST OF THE AMSTER OPENCUT. THE FRACTURE STRIKES N 50 E AND DIPS STEEPLY NORTHWEST. IT HAS AN EXPOSED LENGTH OF OR ABOUT 100 FT. AND THE MORE HIGHLY MINERALIZED PARTS ARE 1 TO 4 FT. WIDE. ; INFO.SRC : 1 PUB LIT; 2 UNPUB REPT

Comment (Location): INFO FROM LAND.ST :(1964)

Comment (Development): FORMERLY PART OF GROUP OF CLAIMS BELONGING TO THE SUPERIOR AND BOSTON MINING CO

References

Reference (Deposit): FARNHAM, L. L., STEWART, L. A., DELONG, C. W., 1961 , MANGANESE DEPOSITS OF EASTERN ARIZONA: USBM INFORMATION CIRCULAR 7990 , P. 75

Reference (Production): USBM INF. CIRC. 7990 , P. 75

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.