Forshoda Mine

Producer in Yavapai county in Arizona, United States with commodities Lead, Zinc, Gold, Silver, Copper
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. Ownership information
  17. Workings at the site
  18. Links to other databases
  19. Bibliographic references
  20. General comments
  21. Reporter information

Geologic information

Identification information

Deposit ID 10048145
MRDS ID M800188
Record type Site
Current site name Forshoda Mine
Alternate or previous names Farnham
Related records 10210770

Geographic coordinates

Geographic coordinates: -112.39518, 34.45727 (WGS84)
Elevation 2073
Relative position 2.4 MILES SE OF GROOM CREEK, ARIZONA

Site location context

Political divisions (FIPS codes)

Yavapai(county)

Arizona(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Groom Creek(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

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 12N 001W 20 NW OF NW Arizona

Comments on the location information

  • LOCATED 0.4 MILES NW OF PINE MTN MINE

Commodities

Commodity Importance
Lead Primary
Zinc Critical Primary
Gold Primary
Silver Secondary
Copper Secondary

Materials information

Materials Type of material
Pyrite Gangue
Quartz Gangue

Alteration

  • (Local) Minor

Host and associated rocks

  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Rhyolite
    Rock unit name Informal Name = Walker Stock Or Walker Granodiorite;Rhyolite Dikes
    Rock description Informal Name = Walker Stock Or Walker Granodiorite;Rhyolite Dikes
    Stratigraphic age (youngest) Paleozoic
    Stratigraphic age (oldest) Cretaceous
    Chronological age 74
    Dating method K-Ar
  • Host or associated Host
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Rhyolite
    Stratigraphic age (youngest) Paleozoic
    Stratigraphic age (oldest) Cretaceous
    Chronological age 74
    Dating method K-Ar

Nearby scientific data

(1) -112.39518, 34.45727

Economic information

Geologic structures

Type of structure Regional
Structure description Foliation In Precambrian Country Rocks Trends N10e To N40e, Dips 75w
Type of structure Local
Structure description Veins Sometimes Parallel Regional Foliation

Ore body information

  • General form TABULAR
    Strike N65E
    Dip 50SE
    Thickness 3.05M
    Length 22.86M
    Width 22.86M

Controls for ore emplacement

  • Faulting, Shearing, Igneous Rock

Comments on the geologic information

  • DEPOSIT IS VEIN IN CRET-PALEO WALKER GRANODIORITE. RHYOLITE DIKES LOCALLY ABUNDANT NEAR VEINS

Economic information about the deposit and operations

Development status Producer
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1916
Year of first production 1949
Year of last production 1964

Mining district

District name Walker District

Ownership information

  • Type Owner
    Owner W. Tonney J. H. Morgan, M. I. Lapham
    First year 1956

Workings at the site

  • Type of workings Underground
    Area 0.044HA
    Length 137.16M
    Overall depth 30.48M
    Overall length 152.4M
    Overall width 3.05M

Comments on the workings information

  • 1 ADIT 350 FT LONG CONNECTS TO SMALL STOPED AREA. MOST OF ADIT CUTS UNMINERALIZED FAULT ZONE

Comments on development

  • COMMENCHERO CLAIMS ADJOIN PROPERTY ON NORTH

Reference information

Bibliographic references

  • Deposit

    U.S.G.S. GQ MAP 997

  • Deposit

    ABGMT CLIPPINGS FILE DATA

  • Deposit

    AZ DEPT MIN. RESOURCES FILE DATA

  • Deposit

    USBM-ABGMT FILE DATA

General comments

Subject category Comment text
Deposit 8-10 FT WIDE BRECCIA ZONE IN RHYOLITE DIKE CUTS FOLIATION AT SLIGHT ANGLE

Reporter information

Type Date Name Affiliation Comment
Reporter 01-OCT-1981 Laraba, Peter (Dewitt, Ed) Arizona Bureau of Geology and Mineral Technology

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.