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  3. Mineral Resource Data System (MRDS)

Matilda Group

Occurrence in Riverside county in California, United States with commodity Tungsten
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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. Links to other databases
  13. Bibliographic references
  14. General comments
  15. Reporter information

Geologic information

Identification information

Deposit ID 10096074
MRDS ID TC38846
Record type Site
Current site name Matilda Group
Related records 10115829

Geographic coordinates

Geographic coordinates: -115.41888, 33.55227 (WGS84)
Relative position 12 MILES WEST OF DESERT CENTER.

Site location context

Political divisions (FIPS codes)

Riverside(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Red Cloud Canyon(quadrangle 1:24,000 scale)

Eagle Mountains(quadrangle 1:100,000 scale)

Salton Sea(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Salton Sea(hydrologic accounting unit)

Southern Mojave-Salton Sea(hydrologic subregion)

California(hydrologic region)

Federal lands

Bureau of Land Management(Bureau of Land Management CA)

Bureau of Land Management CA BLM(Type of land area)

BLM(Federal land areas administered by BLM)

Geographic areas

Country State County
United States California Riverside

Public Land Survey System information

Meridian Township Range Section Fraction State
San Bernardino 007S 015E 21 California

Comments on the location information

  • SW SLOPE OF CHUCKWALLA MOUNTAINS. LAT-LONG FROM PROSPECTS SHOWN ON MAP.; LATITUDE-LONGITUDE VALUES CALCULATED FROM TOWNSHIP, RANGE, SECTION.

Commodities

Commodity Importance
Tungsten Critical Primary

Materials information

Materials Type of material
Scheelite Ore

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Schist > Mica Schist

Nearby scientific data

(1) -115.41888, 33.55227
ListMap

Economic information

Ore body information

  • Strike NE
    Dip 45NW

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Significant No

Comments on the workings information

  • SMALL OPEN CUT.

Reference information

Bibliographic references

  • Deposit

    SAMPSON, R.J., AND TUCKER, W.B., 1945, MINERAL RESOURCES OF RIVERSIDE COUNTY; CALIFORNIA DIVISION OF MINES AND GEOLOGY, VOL. 41, NO. 3, P. 155-6

  • Other Database

    CIMRI

General comments

Subject category Comment text
Deposit MICA SCHIST INTRUDED BY DIORITIC DIKES AND FELSIC DIKES, CONTACTS OF DIKES HAVE ZONES OF QUARTZ, EPIDOTE, GARNET WHERE THE SCHEELITE OCCURS, ORE >2% WO3.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-AUG-1993 Unkefer, Jason 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.