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  3. Mineral Resource Data System (MRDS)

Big 4 Iron

Occurrence in Inyo county in California, United States with commodities Iron, Copper, Gold, Silver, Silica, Sulfur
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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. Host and associated rocks
  9. Nearby scientific data
  10. Ore body information
  11. Economic information about the deposit and operations
  12. Mining district
  13. Land status
  14. Workings at the site
  15. Links to other databases
  16. Bibliographic references
  17. General comments
  18. Reporter information

Geologic information

Identification information

Deposit ID 10036265
MRDS ID M025016
Record type Site
Current site name Big 4 Iron

Geographic coordinates

Geographic coordinates: -117.45646, 36.05331 (WGS84)
Elevation 2036
Relative position 0.6 MILES NORTHWEST OF OLD MILLSPAUGH SITE

Site location context

Political divisions (FIPS codes)

Inyo(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Maturango Peak(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

NAVY(Federal land areas administered by NAVY)

Geographic areas

Country State County
United States California Inyo

Public Land Survey System information

Meridian Township Range Section Fraction State
022S 042E 04 NE OF SW OF NW California

Commodities

Commodity Importance
Iron Primary
Copper Secondary
Gold Secondary
Silver Secondary
Silica Tertiary
Sulfur Tertiary

Comments on the commodity information

  • PRESENCE OF PRECIOUS METALS SPECULATIVE UNTIL ASSAY RESULTS PRODUCED

Materials information

Materials Type of material
Limonite Ore
Pyrite Ore
Quartz Gangue

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Ultramafic Intrusive Rock > Hornblendite
    Stratigraphic age (youngest) Late Cretaceous
    Stratigraphic age (youngest) Late Cretaceous
  • Host or associated Host
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite

Nearby scientific data

(1) -117.45646, 36.05331
ListMap

Economic information

Ore body information

  • General form TABULAR, PINCH AND SWELL
    Strike N 21 W
    Dip 71E

Comments on the geologic information

  • GRANODIORITE HAS ABUNDANT LARGE PINK POTASSIUM FELOSPAR PHENOCRYSTS

Economic information about the deposit and operations

Development status Occurrence
Commodity type Both
Deposit size Small
Significant No

Mining district

District name Argus

Land status

Ownership category Military Reservation

Workings at the site

  • Type of workings Surface/Underground
    Area 0.049HA
    Length 20.12M
    Overall length 20.12M

Comments on the workings information

  • 1 VERTICAL SHAFT-41' DEEP, AVERAGING 12.5' LONG BY 9.5' WIDE 2 1 DRIFT 6' WIDE BY 6' HIGH BY 10' DEEP 3 1 DRIFT 4 1/2' WIDE BY 5.8' HIGH BY 14' DEEP 4 THREE PROSPECT PITS-FILLED IN WITH SLOPE WASH-ONE PIT IN SEPARATE VEIN STRUCTURE-LIMITS UNKNOWN

Reference information

Bibliographic references

  • Deposit

    W.F. DURBIN, C. NEAL, C. RODGERS, MAPPING & SAMPLING 4-20-83

General comments

Subject category Comment text
Deposit SHAFT, DRIFTS, AND PROSPECT PITS DRIVEN TO EXPLORE LIMIT OF A QUARTZ-BEARING MINERALIZED SHEAR ZONE RANGING FROM 1" TO 2 1/2 FEET WIDE. THESE SMALL WORKINGS CLEARLY EXPOSED THE ZONE FROM HANGING WALL TO FOOTWALL ; INFO.SRC : 3 FIELD OBSERV

Reporter information

Type Date Name Affiliation Comment
Reporter 01-APR-1983 Durbin, William F. (Neal, Conrad L.) Naval Weapons Center-Geothermal Utilization Division

Beyond USGS

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

Maps centered on this site

Authoritative California resources

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