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Black Jewel Claim

Past Producer in Pinal 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. Geologic structures
  11. Ore body information
  12. Controls for ore emplacement
  13. Economic information about the deposit and operations
  14. Production statistics
  15. Workings at the site
  16. Links to other databases
  17. Bibliographic references
  18. General comments
  19. Reporter information

Geologic information

Identification information

Deposit ID 10039511
MRDS ID M050196
Record type Site
Current site name Black Jewel Claim

Geographic coordinates

Geographic coordinates: -111.77793, 32.72732 (WGS84)
Elevation 472
Relative position 12 MILES EAST OF ELOY, 0.5 MILES N OF SHOPISHK IN THE SILVER REEF MOUNTAINS.

Site location context

Political divisions (FIPS codes)

Pinal(county)

Arizona(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Silver Reef Mountains(quadrangle 1:24,000 scale)

Casa Grande(quadrangle 1:100,000 scale)

Tucson(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Lower Santa Cruz(hydrologic unit)

Santa Cruz(hydrologic accounting unit)

Middle Gila(hydrologic subregion)

Lower Colorado(hydrologic region)

Federal lands

BIA(Federal land areas administered by BIA)

Geographic areas

Country State County
United States Arizona Pinal

Public Land Survey System information

Meridian Township Range Section Fraction State
Gila and Salt River 008S 005E 13 Arizona

Comments on the location information

  • INFO FROM LAND.ST :(1964)

Commodities

Commodity Importance
Manganese Critical Primary

Materials information

Materials Type of material
Psilomelane Ore
Hematite Gangue

Analytical data

Result SORTED ORE CONTAINED 29 PCT. MN

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Granitoid > Granite
    Stratigraphic age (youngest) Neoproterozoic
    Stratigraphic age (youngest) Neoproterozoic
  • Host or associated Host
    Rock type Plutonic Rock > Granitoid > Granite

Nearby scientific data

(1) -111.77793, 32.72732
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description Block Faulting Trending Nnw.

Ore body information

  • General form PODS, IRREGULAR
    Strike N 25 E
    Dip 55 NW
    Length 9.14M

Controls for ore emplacement

  • Fracture Zone In Granite

Comments on the geologic information

  • GEOL.DESC: MN MINERALIZATION OCCURS IN FRACTURES IN COARSE-GRAINED GRANITE.

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1955
Discoverer Bethel I. Richardson, Ernest Wilkinson, Leonard J. Hamelitz, Of Casa Grande
Year of first production 1955
Production years 1955-1956

Production statistics

  • Year 1956
    Period 1955-1956
    Material MN
    Accuracy Estimate
    Description Cp_Grade: ^Sorted 29 % Mn Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Manganese Manganese 29wt-pct

Workings at the site

  • Type of workings Surface/Underground
    Length 25.91M

Comments on the workings information

  • 55 FT. INCLINED SHAFT. 30 FT. DRIFT. SHALLOW OPEN CUTS ON EITHER SIDE OF THE SHAFT.

Comments on development

  • ALL EQUIPMENT EXCEPT HEADFRAME REMOVED AND PROPERTY IDLED IN 1956 ; ECON.COM: EASY ACCESS BY ROAD

Reference information

Bibliographic references

  • Deposit

    FARNHAM, L.L., STEWART, L.A., DELONG, C.W., 1961, U.S. BUREAU MINES I.C. 7990

  • Deposit

    1961 COMPILE U.S. BUREAU MINES, I.C. 799

  • Production

    FARNHAM, L.L., ET. AL. 1961

General comments

Subject category Comment text
Deposit MN MINERALIZATION OCCURS IN FRACTURES AS PODS AND IRREGULAR SEGREGATIONS. SOME MINERALIZATION AROUND FAULT BRECCIA.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-AUG-1972 Bergquist, Joel R. 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.