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  3. Mineral Resource Data System (MRDS)

Master Key Group

Past Producer in Kern county in California, United States with commodity Gold
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Sections on this page
  1. Identification information
  2. Geographic coordinates
  3. Site location context
  4. Geographic areas
  5. Commodities
  6. Materials information
  7. Host and associated rocks
  8. Nearby scientific data
  9. Ore body information
  10. Economic information about the deposit and operations
  11. Mining district
  12. Ownership information
  13. Workings at the site
  14. Links to other databases
  15. Bibliographic references
  16. General comments
  17. Reporter information

Geologic information

Identification information

Deposit ID 10104165
MRDS ID MP25727
Record type Site
Current site name Master Key Group

Geographic coordinates

Geographic coordinates: -117.63811, 35.35888 (WGS84)
Location accuracy 1000(meters)
Relative position 3/4 MI E RANDSBURG.

Site location context

Political divisions (FIPS codes)

Kern(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Johannesburg(quadrangle 1:24,000 scale)

Cuddeback Lake(quadrangle 1:100,000 scale)

Trona(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Coyote-Cuddeback Lakes(hydrologic unit)

Northern Mojave(hydrologic accounting unit)

Northern Mojave-Mono Lake(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 Kern

Commodities

Commodity Importance
Gold Primary

Materials information

Materials Type of material
Gold Ore

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Granitoid > Monzonite
  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Rhyolite
  • Host or associated Host
    Rock type Plutonic Rock > Granitoid > Monzonite
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Rhyolite

Nearby scientific data

(1) -117.63811, 35.35888
ListMap

Economic information

Ore body information

  • Thickness 0.91M

Economic information about the deposit and operations

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

Mining district

District name Rand Mining District

Ownership information

  • Type Owner
    Owner Edward Herkelrath, Randsburg, Ca
    First year 1949

Workings at the site

  • Type of workings Surface
    Overall depth 15.24M

Comments on the workings information

  • SHALLOW OPENINGS ON VEINS. PROPERTY IS WELL-SITUATED AND OWNER BELIEVED DEVELOPMENT WOULD EXPOSE A LARGE LOW-GRADE DEPOSIT.

Reference information

Bibliographic references

  • Deposit

    TUCKER, W. B., SAMPSON, R.J. AND OAKESHOTT, G.B., 1949, MONERAL RESOURCES OF KERN COUNTY: CALIFORNIA JOURNAL OF MINES AND GEOLOGY, V. 45, NO. 2, P. 229, PL. 17.

  • Deposit

    CALIFORNIA JOURNAL OF MINES AND GEOLOGY, VOL. 36, P. 34.

  • Production

    CALIFORNIA JOURNAL OF MINES AND GEOLOGY, VOL 36, P. 34.

General comments

Subject category Comment text
Deposit 2 SYSTEMS OF VEINS, EACH 1-3 FT IN THICKNESS ON SURFACE. ONE SET ON NORTH SIDE OF DIKE IN MONZONITE. OTHER SET IN RHYOLITE.
Deposit MONZONITE INTRUDED BY RHYOLITE DIKES.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUN-1981 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.

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.