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Amster Prospect

Producer in Gila county in Arizona, United States with commodity Manganese
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Sections on this page
  1. Identification information
  2. Geographic coordinates
  3. Site location context
  4. Geographic areas
  5. Public Land Survey System information
  6. Commodities
  7. Materials information
  8. Host and associated rocks
  9. Nearby scientific data
  10. Ore body information
  11. Controls for ore emplacement
  12. Economic information about the deposit and operations
  13. Mining district
  14. Land status
  15. Ownership information
  16. Production statistics
  17. Workings at the site
  18. Links to other databases
  19. Bibliographic references
  20. General comments
  21. Reporter information

Geologic information

Identification information

Deposit ID 10027364
MRDS ID M002966
Record type Site
Current site name Amster Prospect
Related records 10112943

Geographic coordinates

Geographic coordinates: -110.75125, 33.43758 (WGS84)
Elevation 1210
Relative position ABOUT 5 MILES BY ROAD NE OF GLOBE

Site location context

Political divisions (FIPS codes)

Gila(county)

Arizona(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Globe(quadrangle 1:24,000 scale)

Globe(quadrangle 1:100,000 scale)

Mesa(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

San Carlos(hydrologic unit)

Upper Gila(hydrologic accounting unit)

Upper Gila(hydrologic subregion)

Lower Colorado(hydrologic region)

Geographic areas

Country State County
United States Arizona Gila

Public Land Survey System information

Meridian Township Range Section Fraction State
Gila and Salt River 001N 015E 11 SE4 OF SW4 Arizona

Comments on the location information

  • INFO FROM LAND.ST :(1964)

Commodities

Commodity Importance
Manganese Critical Primary

Materials information

Materials Type of material
Pyrolusite Ore
Wad Ore
Calcite Gangue
Quartz Gangue

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite > Diabase
    Stratigraphic age (youngest) Neoproterozoic
    Stratigraphic age (youngest) Neoproterozoic
  • Host or associated Host
    Rock type Sedimentary Rock > Carbonate > Limestone

Nearby scientific data

(1) -110.75125, 33.43758
ListMap

Economic information

Ore body information

  • General form IRREGULAR
    Strike N 60 W
    Dip 80 NE
    Length 91.44M
    Width 1.83M

Controls for ore emplacement

  • Mn Minerals Occur Along Fracture Zone Cutting Beds Of The Mescal Limestone

Economic information about the deposit and operations

Development status Producer
Commodity type Metallic
Deposit size Small
Significant No

Mining district

District name Globe Hills District

Land status

Ownership category Federal

Ownership information

  • Type Owner
    Owner Mrs. E. A. Borge
    First year 1961

Production statistics

  • Year 1954
    Material MN
    Accuracy Estimate
    Description Ap_Grade: ^23.8% Mn
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Manganese Manganese 24wt-pct

Workings at the site

  • Type of workings Surface
    Overall depth 6.1M
    Overall length 27.43M
    Overall width 1.83M

Comments on development

  • FORMERLY PART OF GROUP OF CLAIMS BELONGING TO THE SUPERIOR AND BOSTON MINING CO

Reference information

Bibliographic references

  • Deposit

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

  • Production

    USBM INF. CIRC. 7990 , P. 75

General comments

Subject category Comment text
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

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUL-1979 Hall, R. K. (Creasey, S. C.) U.S. Geological Survey

Beyond USGS

Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.

Maps centered on this site

Authoritative Arizona resources

These are landing pages for further research — the state agencies don't currently expose per-mine deep links.