Grand Island Mine

Producer in Yavapai 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. Workings at the site
  18. Links to other databases
  19. Bibliographic references
  20. Reporter information

Geologic information

Identification information

Deposit ID 10027258
MRDS ID M002653
Record type Site
Current site name Grand Island Mine
Related records 10161803

Geographic coordinates

Geographic coordinates: -112.09491, 34.69726 (WGS84)
Elevation 1722
Relative position 4 MILES SSE OF JEROME

Site location context

Political divisions (FIPS codes)

Yavapai(county)

Arizona(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Cottonwood(quadrangle 1:24,000 scale)

Prescott(quadrangle 1:100,000 scale)

Prescott(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Upper Verde(hydrologic unit)

Verde(hydrologic accounting unit)

Salt(hydrologic subregion)

Lower Colorado(hydrologic region)

Federal lands

Prescott National Forest(National Forest)

National Forest FS(Type of land area)

FS(Federal land areas administered by FS)

Geographic areas

Country State County
United States Arizona Yavapai

Public Land Survey System information

Meridian Township Range Section Fraction State
Gila and Salt River 015N 002E 12 NW Arizona

Commodities

Commodity Importance
Copper Primary
Gold Tertiary

Materials information

Materials Type of material
Chalcopyrite Ore
Tetrahedrite Ore
Calcite Gangue
Quartz Gangue
Pyrite Unknown

Alteration

  • (Local) Minor Chlorite, Sericite In Country Rocks

Host and associated rocks

  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Rhyolite
    Stratigraphic age (youngest) Proterozoic
    Chronological age 1760
    Dating method U-Pb (zircon)
    Type of media Zircon
  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Mafic Volcanic Rock > Basalt
  • Host or associated Associated
    Rock type Plutonic Rock > Granitoid > Granite
    Stratigraphic age (youngest) Proterozoic
    Chronological age 1760
    Dating method U-Pb (zircon)
    Type of media Zircon
  • Host or associated Host
    Rock type Metamorphic Rock > Metavolcanic Rock > Mafic Metamorphic Rock > Meta-Basalt
    Rock unit name Shea Basalt;Deception Rhyolite Member Or Similar Metarhyolite
    Rock description Shea Basalt;Deception Rhyolite Member Or Similar Metarhyolite
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Rhyolite
    Stratigraphic age (youngest) Proterozoic
    Chronological age 1760
    Dating method U-Pb (zircon)
    Type of media Zircon

Nearby scientific data

(1) -112.09491, 34.69726

Economic information

Geologic structures

Type of structure Regional
Structure description Foliation In Metavolcanic Rocks Trends N65e To N80e
Type of structure Local
Structure description Vein Trends Ne And Crosscuts Foliation In Precambrian Rocks

Ore body information

  • General form TABULAR
    Width 2.44M

Controls for ore emplacement

  • Faulting, Shearing

Comments on the geologic information

  • DEPOSIT IS QUARTZ VEIN WHICH CROSSCUTS PRECAMBRIAN IGNEOUS ROCKS

Economic information about the deposit and operations

Development status Producer
Commodity type Metallic
Deposit size Small
Significant No

Mining district

District name Shea District

Land status

Ownership category National Forest

Workings at the site

  • Type of workings Underground
    Length 609.6M
    Overall depth 158.5M

Comments on development

  • SHEA COPPER CO. BOUGHT GRAND ISLAND MINE IN 1922

Reference information

Reporter information

Type Date Name Affiliation Comment
Reporter 01-APR-1972 Gere, W. U.S. Geological Survey
Updater 01-MAR-1979 Johnson, Kris H. (Creasey, S.C.) U.S. Geological Survey
Updater 01-JAN-1982 Roth, Frances A. (Dewitt, Ed) 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.