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  3. Mineral Resource Data System (MRDS)

Dobbins Claims

Past Producer in La Paz 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. Alteration
  9. Host and associated rocks
  10. Nearby scientific data
  11. Ore body information
  12. Controls for ore emplacement
  13. Economic information about the deposit and operations
  14. Mining district
  15. Land status
  16. Workings at the site
  17. Links to other databases
  18. Bibliographic references
  19. Reporter information

Geologic information

Identification information

Deposit ID 10102541
MRDS ID M003877
Record type Site
Current site name Dobbins Claims
Alternate or previous names Jolly Roger

Geographic coordinates

Geographic coordinates: -113.92384, 33.94533 (WGS84)
Elevation 411
Relative position 6 MI NORTHEAST OF BOUSE

Site location context

Political divisions (FIPS codes)

La Paz(county)

Arizona(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Bouse Hills West(quadrangle 1:24,000 scale)

Salome(quadrangle 1:100,000 scale)

Phoenix(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Bouse Wash(hydrologic unit)

Lower Colorado(hydrologic accounting unit)

Lower Colorado(hydrologic subregion)

Lower Colorado(hydrologic region)

Federal lands

Bureau of Land Management(Bureau of Land Management AZ)

Bureau of Land Management AZ BLM(Type of land area)

BLM(Federal land areas administered by BLM)

Geographic areas

Country State County
United States Arizona La Paz

Public Land Survey System information

Meridian Township Range Section Fraction State
Gila and Salt River 007N 016W 15 Arizona

Commodities

Commodity Importance
Manganese Critical Primary

Materials information

Materials Type of material
Psilomelane Ore
Pyrolusite Ore

Alteration

  • (Local) The Manganese Oxides Occur As The Cementing Material Of Breccia And Which Replace In Part The Andesite Fragments. Psilomelane Is More Abundant At The Surface, But At Depths Of A Few Feet Pyrolusite Predominates

Host and associated rocks

  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Intermediate Volcanic Rock > Andesite
    Stratigraphic age (youngest) Pliocene
    Stratigraphic age (youngest) Pliocene
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Intermediate Volcanic Rock > Andesite

Nearby scientific data

(1) -113.92384, 33.94533
ListMap

Economic information

Ore body information

  • General form TABULAR
    Strike S65W
    Dip NW
    Length 7.62M
    Width 0.61M
    Depth to top 0M
    Depth to bottom 1.83M

Controls for ore emplacement

  • Deposits Occur Along A Shear Zone, And Are Apparently Local

Comments on the geologic information

  • VEINS IN MIOCENE VOLCANICS

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No

Mining district

District name Bouse District

Land status

Ownership category BLM Administrative Area

Comments on the production information

  • ABOUT 30 TONS OF ORE WAS STACKED ON THE DUMP IN 1918, AND 100 TONS OF ORE PRODUCTION BY 1941

Workings at the site

  • Type of workings Surface
    Overall depth 3.05M

Comments on the workings information

  • A HOLE 10 FT DEEP WAS DUG AT POINT WHERE MANGANESE FLOAT WAS ABUNDANT.

Reference information

Bibliographic references

  • Deposit

    BUTLER, G.M.; 1930; MANGANESE ORE DEPOSITS IN ARIZONA; A.B.M. BULLETIN 127, P. 101

  • Deposit

    JONES, E.L. JR.; RANSOME, F.L.; 1920; DEPOSITS OF MANGANES ORE IN ARIZONA; U.S.G.S. BULLETIN 710, P. 182

  • Production

    A.B.M. BULLETIN 127, P. 101, U.S.G.S. BULLETIN 710, P. 182

Reporter information

Type Date Name Affiliation Comment
Reporter 01-APR-1972 Gere, W. U.S. Geological Survey
Updater 01-OCT-1979 Hall, R. K. (Creasey, S. C.) U.S. Geological Survey
Updater 01-JUL-1990 Bolm, Karen S. 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.