Mcphall Prospect

Occurrence in Yuma county in Arizona, United States with commodities Copper, Gold
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. Geologic structures
  12. Ore body information
  13. Controls for ore emplacement
  14. Economic information about the deposit and operations
  15. Mining district
  16. Land status
  17. Links to other databases
  18. Bibliographic references
  19. Reporter information

Geologic information

Identification information

Deposit ID 10027239
MRDS ID M002579
Record type Site
Current site name Mcphall Prospect
Related records 10186063

Geographic coordinates

Geographic coordinates: -114.38439, 32.74008 (WGS84)
Elevation 305
Relative position NORTHERN END OF THE GILA MOUNTAINS

Site location context

Political divisions (FIPS codes)

Yuma(county)

Arizona(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Fortuna(quadrangle 1:24,000 scale)

Yuma(quadrangle 1:100,000 scale)

El Centro(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Lower Gila(hydrologic unit)

Lower Gila(hydrologic accounting unit)

Lower Gila(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 Yuma

Public Land Survey System information

Meridian Township Range Section Fraction State
Gila and Salt River 008S 021W 14 N OF CENTER Arizona

Commodities

Commodity Importance
Copper Primary
Gold Primary

Materials information

Materials Type of material
Chrysocolla Ore
Gold Ore
Hematite Ore
Limonite Ore
Malachite Ore
Wulfenite Ore
Quartz Gangue
Sericite Gangue

Alteration

  • (Local) A Strike Fault, With Schist Footwall And Marble Hanging Wall, Contains A Vein Of Coarse-Grained, Vitreous, Gray Quartz That Ranges From A Few Inches Up To Four Feet

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Metasedimentary Rock > Marble
    Stratigraphic age (youngest) Pliocene
    Stratigraphic age (youngest) Neoproterozoic

Nearby scientific data

(1) -114.38439, 32.74008

Economic information

Geologic structures

Type of structure Local
Structure description Area Has Been Cut By Several Faults Of Minor Magnitude.

Ore body information

  • General form IRREGULAR , LENSES
    Width 1.22M

Controls for ore emplacement

  • In Places, The Copper Minerals Are Sufficiently Abundant To Color The Whole Width Of The Vein

Comments on the geologic information

  • IN METAMORPHOSED MESOZOIC (?) SEDIMENTS NEAR MESOZOIC GRANITE

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Deposit size Small
Significant No

Mining district

District name Dome District

Land status

Ownership category BLM Administrative Area

Comments on the production information

  • NO PRODUCTION RECORD

Comments on the workings information

  • WORKINGS ON THIS PROSPECT CONSIST OF A FEW SHALLOW PITS

Reference information

Bibliographic references

  • Deposit

    WILSON, E.D.; 1933; GEOLOGY AND MINERAL DEPOSITS OF SOUTHERN YUMA COUNTY, ARIZONA: ARIZ. B.M. BULLETIN 134, P. 201

  • Deposit

    BUTLER, G.M.; 1937; ARIZONA GOLD PLACERS AND PLACERING: ARIZ. B.M. BULLETIN 142, P. 19

  • Deposit

    BUTLER, G.M.; 1952; ARIZONA GOLD PLACERS AND PLACERING: ARI. B.M. BULLETIN 160; P.21

  • Deposit

    JOHNSON, M.G.; 1972; PLACER GOLD DEPOSITS OF ARIZONA: U.S.G.S. BULLETIN 1355, P. 69

Reporter information

Type Date Name Affiliation Comment
Reporter 01-APR-1972 Gere, W. U.S. Geological Survey
Updater 01-NOV-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.

Authoritative Arizona resources

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