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Randel Claim No. 1

Producer in Placer county in California, United States with commodity Manganese
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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. Nearby scientific data
  9. Ore body information
  10. Economic information about the deposit and operations
  11. Links to other databases
  12. Bibliographic references
  13. Reporter information

Geologic information

Identification information

Deposit ID 10109378
MRDS ID M020076
Record type Site
Current site name Randel Claim No. 1
Alternate or previous names American, Tilsley and Coplen Claim.
Related records 10213008

Geographic coordinates

Geographic coordinates: -120.87853, 39.04239 (WGS84)
Relative position 2 MI. BY ROAD N. OF YANKEE JIMS, 9 MI. N. W. OF COLFAX ON THE SOUTHERN PACIFIC.

Site location context

Political divisions (FIPS codes)

Placer(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Colfax(quadrangle 1:24,000 scale)

Truckee(quadrangle 1:100,000 scale)

Chico(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

North Fork American(hydrologic unit)

Lower Sacramento(hydrologic accounting unit)

Sacramento(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 Placer

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 014N 010E 20 California

Comments on the location information

  • LOCATED IN SW 1/4 SECTION 20

Commodities

Commodity Importance
Manganese Critical Primary

Materials information

Materials Type of material
Psilomelane Ore
Pyrolusite Ore

Analytical data

Result ORE GRADE ABOUT 40 PERCENT MANGANESE

Economic information

Ore body information

  • Thickness 0.3M

Comments on the geologic information

  • GEOL.DESC: META CHERT HAS BEEN METAMORPHOSED TO FINE GRAINED QUARTZITE OR CHERTY SLATE AND CONTAINS STAINS, STRINGERS, POCKETS AND LENSES OF MANGANESE OXIDES. THE META CHERT IS ENCLOSED IN GRAY TO YELLOW SERICITE SCHIST, BOTH STRIKING N-S TO N 25 W AND DIPPING 60 TO 80 E. ORE IS A MIXTURE OF PSILOMELANE AND PYROLUSITE, WITH ADMIXTURES OF QUARTZ VEIN MATERIAL AND META CHERT. SOME FRAGMENTS OF PINK RHODONITE WERE PRESENT IN THE DUMP. QUARTZ VEINS UP TO 6 INCHES THICK CUT THE META CHERT AND MANGANESE OXIDES.

Economic information about the deposit and operations

Development status Producer
Commodity type Metallic
Deposit size Small
Significant No

Reference information

Bibliographic references

  • Deposit

    D.O.M. BULL. 152 1950 PP. 171 - 172

  • Deposit

    D.O.M. BULL. 125 1943 P. 65 , 150

Reporter information

Type Date Name Affiliation Comment
Reporter 01-DEC-1977 Killman, K.; Albers, J. 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.