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Big Rock

Occurrence in Trinity 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. Host and associated rocks
  8. Nearby scientific data
  9. Economic information about the deposit and operations
  10. Links to other databases
  11. Bibliographic references
  12. Reporter information

Geologic information

Identification information

Deposit ID 10095209
MRDS ID M020301
Record type Site
Current site name Big Rock
Related records 10214368

Geographic coordinates

Geographic coordinates: -123.45306, 40.64956 (WGS84)
Relative position ON THE ELTAPOM TRAIL

Site location context

Political divisions (FIPS codes)

Trinity(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Hyampom Mountain(quadrangle 1:24,000 scale)

Hayfork(quadrangle 1:100,000 scale)

Redding(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

South Fork Trinity(hydrologic unit)

Klamath(hydrologic accounting unit)

Klamath-Northern California Coastal(hydrologic subregion)

California(hydrologic region)

Federal lands

Shasta-Trinity 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 Trinity

Public Land Survey System information

Meridian Township Range Section Fraction State
Humboldt 003N 006E 12 California

Comments on the location information

  • LOCATED IN SW 1/4 SECTION 12

Commodities

Commodity Importance
Manganese Critical Tertiary

Analytical data

Result ORE GRADE 0.81 PERCENT MANGANESE

Host and associated rocks

  • Host or associated Host
    Rock type Sedimentary Rock > Chemical Sediment > Chert
    Stratigraphic age (youngest) Late Jurassic

Nearby scientific data

(1) -123.45306, 40.64956
ListMap

Economic information

Comments on the geologic information

  • GEOL.DESC: VERY LOW GRADE DEPOSIT OF RED AND PURPLE CHERT WITH THIN FILMS OF MANGANESE OXIDE. CHERT IS SURROUNDED BY GREENSTONE AND SERPENTINE.

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Significant No

Reference information

Bibliographic references

  • Deposit

    D.O.M. BULL. 152 1950 PP. 306 - 307

  • Deposit

    D.O.M. BULL. 125 1943 P. 195

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JAN-1978 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.