Amster Prospect

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

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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: Amster Prospect

State: Arizona

County: Gila

Elevation: 3,970 Feet (1,210 Meters)

Primary Mineral: Manganese

Lat, Long: 33.4375, -110.75056

Satelite image of the Amster Prospect

Amster Prospect MRDS details

Site Name

Primary: Amster Prospect

Commodity

Primary: Manganese

Location

State: Arizona
County: Gila
District: Globe Hills District

Land Status

Land ownership: Federal

Holdings

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

Orebody

Form: IRREGULAR

Structure

Alterations

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

Materials

Ore: Pyrolusite

Ore: Wad

Gangue: Calcite

Gangue: Quartz

Comments

Comment Type: Deposit	Comment: 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 Type: Location	Comment: INFO FROM LAND.ST :(1964)
Comment Type: Development	Comment: FORMERLY PART OF GROUP OF CLAIMS BELONGING TO THE SUPERIOR AND BOSTON MINING CO

References

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