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  3. Mineral Resource Data System (MRDS)

Halfmoon Prospect

Occurrence in Yavapai county in Arizona, United States with commodities Copper, Iron
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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. 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. Workings at the site
  18. Links to other databases
  19. Bibliographic references
  20. Reporter information

Geologic information

Identification information

Deposit ID 10027251
MRDS ID M002630
Record type Site
Current site name Halfmoon Prospect
Related records 10186274

Geographic coordinates

Geographic coordinates: -112.19963, 34.43366 (WGS84)
Elevation 1295
Relative position 3 1/2 MILES NE OF MAYER

Site location context

Political divisions (FIPS codes)

Yavapai(county)

Arizona(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Mayer(quadrangle 1:24,000 scale)

Bradshaw Mountains(quadrangle 1:100,000 scale)

Prescott(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Agua Fria(hydrologic unit)

Lower Gila-Agua Fria(hydrologic accounting unit)

Lower Gila(hydrologic subregion)

Lower Colorado(hydrologic region)

Federal lands

ST(Federal land areas administered by ST)

Geographic areas

Country State County
United States Arizona Yavapai

Public Land Survey System information

Meridian Township Range Section Fraction State
Gila and Salt River 012N 002E 07 Arizona

Commodities

Commodity Importance
Copper Primary
Iron Tertiary

Materials information

Materials Type of material
Chalcocite Ore
Chalcopyrite Ore
Specularite Ore
Tetrahedrite Ore
Actinolite Gangue
Calcite Gangue
Chlorite Gangue
Pyrite Gangue
Quartz Gangue
Sericite Gangue

Alteration

  • (Local) Chloritization, Sericitization

Host and associated rocks

  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Pyroclastic Rock > Tuff
  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Rhyolite
  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Intermediate Volcanic Rock > Andesite
  • Host or associated Host
    Rock type Sedimentary Rock > Chemical Sediment > Chert
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Pyroclastic Rock > Tuff
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Rhyolite
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Intermediate Volcanic Rock > Andesite

Nearby scientific data

(1) -112.19963, 34.43366
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description Foliation And Transposed Bedding In Metavolcanic Rocks Trends N-S To N15w
Type of structure Local
Structure description Massive Sulfide Lenses Parallel Stratigraphic Units

Ore body information

  • General form BUNCHES

Controls for ore emplacement

  • Stratigraphy, Igneous Activity

Comments on the geologic information

  • DEPOSIT IS MASSIVE SULFIDE LENS IN PROTEROZOIC METAVOLCANIC ROKCS. MASSIVE SULFIDE LENS LOCALIZED IN OR NEAR RHYOLITE AND RHYOLITE-ANDESITE CONTACTS

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Deposit size Small
Significant No

Mining district

District name Agua Fria District

Land status

Ownership category Private

Workings at the site

  • Type of workings Underground
    Overall depth 163.07M

Reference information

Bibliographic references

Reporter information

Type Date Name Affiliation Comment
Reporter 01-APR-1972 Gere, W. U.S. Geological Survey
Updater 01-FEB-1979 Johnson, Kris H. (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.