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Brownstone

Occurrence in Inyo county in California, United States with commodities Tungsten, Molybdenum
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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. Land status
  13. Reserves and resources
  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 10008551
MRDS ID D000852
Record type Site
Current site name Brownstone
Alternate or previous names Brownstone Nos. 1 and 2
Related records 10212537

Geographic coordinates

Geographic coordinates: -118.71762, 37.38327 (WGS84)
Elevation 2819
Relative position 1/2 MILE SW OF PINE CREEK MILL

Site location context

Political divisions (FIPS codes)

Inyo(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Mount Morgan(quadrangle 1:24,000 scale)

Bishop(quadrangle 1:100,000 scale)

Mariposa(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Crowley Lake(hydrologic unit)

Mono-Owens Lakes(hydrologic accounting unit)

Northern Mojave-Mono Lake(hydrologic subregion)

California(hydrologic region)

Federal lands

Inyo 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 California Inyo

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 007S 030E 08 California

Commodities

Commodity Importance
Tungsten Critical Primary
Molybdenum Primary

Comments on the commodity information

  • CONTENT OF TUNGSTEN APPEARS HIGHER ON THE LIMESTONE SIDE OF THE TACTITE ZONE.

Materials information

Materials Type of material
Scheelite Ore

Analytical data

Result .3-2.0% WO3, .1-.9% MO

Host and associated rocks

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

Nearby scientific data

(1) -118.71762, 37.38327
ListMap

Economic information

Ore body information

  • Dip 75 NE
    Thickness 10.06M

Comments on the geologic information

  • GEOL.DESC: TACTITE IS BORDERED BY GRANITE ON THE WEST MARBLE 65 FT. THICK ON THE EAST, APLITE DIKES 30 FT. OR MORE IN THICKNESS CUT ACROSS CONTACTS AND DIVIDE TACTITE AND LIMESTONE INTO RECTANGULAR BLOCKS.

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Significant No

Land status

Ownership category National Forest

Reserves and resources

  • Type In-situ
    Estimate year 1945
    Total resources 4000mt ore
    Commodity Subtype Grade units Group Importance Year
    Tungsten Wo3 0.5 wt-pct Tungsten Major 1945

Workings at the site

  • Type of workings Underground
    Length 201.78M

Comments on the workings information

  • 6 DRILL HOLES TOTALING 662 FT.

Reference information

Bibliographic references

  • Deposit

    LEMMON, D.M.; TUNGSTEN DEPOSITS IN THE US; VOL. I; UNPUBLISHED DATA, P. 228-229.

  • Deposit

    LEMMON, D.M. AND TWETO, O.L., 1962; TUNGSTEN IN THE US; USGS MAP, MR-25.

  • Reserve-Resource

    LEMMON, D.M., UNPUBLISHED DATA

General comments

Subject category Comment text
Deposit 0.3%-2% WO3, 0.1%-0.9% MO , LOCATED NEAR MARBLE-GRANITE CONTACT , LOCATED NEAR MARBLE-GRANITE CONTACT

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAY-1974 Elliott, James E. U.S. Geological Survey
Updater 01-APR-1979 Fraticelli, L. A. (Albers, J.) U.S. Geological Survey PARSED HOST ROCK AND ASSOCIATED ROCK INFORMATION FROM OLD SINGLE VALUED FIELD TO NEW MULTIVALUED FIELD
Editor 09-JUN-1995 Mosier, Dan 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 California resources

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