Mountain Girl Mine

Past Producer in Inyo county in California, United States with commodities Gold, Silver, Lead, Copper, Iron
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. Links to other databases
  16. Bibliographic references
  17. General comments
  18. Reporter information

Geologic information

Identification information

Deposit ID 10103512
MRDS ID M024179
Record type Site
Current site name Mountain Girl Mine
Alternate or previous names Porter Mine ?
Related records 10114797

Geographic coordinates

Geographic coordinates: -117.07617, 36.04942 (WGS84)
Elevation 2316
Relative position 1 MI. W. PORTER PEAK

Site location context

Political divisions (FIPS codes)

Inyo(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Panamint(quadrangle 1:24,000 scale)

Darwin Hills(quadrangle 1:100,000 scale)

Death Valley(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Panamint Valley(hydrologic unit)

Northern Mojave(hydrologic accounting unit)

Northern Mojave-Mono Lake(hydrologic subregion)

California(hydrologic region)

Federal lands

Death Valley National Park(National Park)

National Park NPS(Type of land area)

NPS(Federal land areas administered by NPS)

Geographic areas

Country State County
United States California Inyo

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 022S 045E 01 California

Comments on the location information

  • UTM ACC. LOCATION PROJECTED. LAND UNSURVEYED

Commodities

Commodity Importance
Gold Primary
Silver Secondary
Lead Secondary
Copper Tertiary
Iron Tertiary

Materials information

Materials Type of material
Chalcopyrite Ore
Galena Ore
Gold Ore
Pyrrhotite Ore
Siderite Ore
Silver Ore
Calcite Gangue
Quartz Gangue
Pyrite Unknown

Alteration

  • (Local) Pyrrhotite Metasomatically Developed In Wall Rocks Adjacent To Veins. Replaces Quartzite Fragments In Country Rock

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Metasedimentary Rock > Quartzite

Nearby scientific data

(1) -117.07617, 36.04942

Economic information

Ore body information

  • General form LENS
    Strike N 25 E
    Dip 50 SE
    Thickness 9.14M

Controls for ore emplacement

  • Junction Of Calcite Stringers With Quartz Veins

Comments on the geologic information

  • POST-MINERAL FAULTS OF SMALL DISPLACEMENT OFFSET VEINS IN MANY PLACES. HYPOGENE MINERALS, IN ORDER OF ABUNDANCE, INCLUDE: PYRRHOTITE, ARSENOPYRITE, CHALCOPYRITE, PYRITE, GOLD

Economic information about the deposit and operations

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

Mining district

District name South Park

Comments on the production information

  • A SMALL AMOUNT OF ORE PRODUCED IN 1912 RAN 2.25% PB AND 14.0 OZ/TON AG. OWNER HAD FAIR RETURNS AND SOLD SPECIMENS OF COARSE GOLD. AVERAGE $9/TON.

Comments on the workings information

  • TUNNELS AND A SHAFT, MANY OOPEN CUTS AND TRENCHES

Reference information

Bibliographic references

  • Deposit

    NORMAN, L.A., JR. AND STEWART, RICHARD M., 1951, MINES AND MINERAL RESOURCES OF INYO COUNTY: CALIF. JOURNAL OF MINES AND GEOLOGY, V. 47, NO. 1, P. 158

  • Deposit

    SAMPSON, R.J., 1932, MINERAL RESOURCES OF A PART OF THE PANAMINT RANGE: CALIF. JOUR. MINES AND GEOLOGY, V. 28, P. 370-371

  • Deposit

    GOODWIN, J.G., 1957, LEAD AND ZINC IN CALIFORNIA: CALIFORNIA JOURNAL OF MINES AND GEOLOGY, V. 53, NOS. 3 & 4, P. 494

  • Production

    GOODWIN (1957)

General comments

Subject category Comment text
Deposit NUMBER OF SMALL VEINS, AVG. 2 - 3 IN. IN THICKNESS. ACCORDING TO OWNER, THICKER VEINS USUALLY BARREN. THEY STRIKE N 35 - 50 E AND ARE APPARENTLY BRANCHES OF MAIN VEIN, WHICH WAS TRACEABLE FOR A SHORT DISTANCE ON SURFACE. CALCITE STRINGERS JOIN VEIN AT ACUTE ANGLES AND ARE CONFINED TO FOOTWALL SIDE.
Deposit 2 CLAIMS, MT. GIRL AND MT. GIRL FRACTION ; INFO.SRC : 1 PUB LIT

Reporter information

Type Date Name Affiliation Comment
Reporter 01-DEC-1980 Nelson, Scott C. (Albers, John, P.) U.S. Geological Survey

Beyond USGS

Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.

Authoritative California resources

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