Foss Prospect

Occurrence in Trinity county in California, United States with commodity Manganese

Geologic information

Identification information

Deposit ID 10033688
MRDS ID M020322
Record type Site
Current site name Foss Prospect
Related records 10141399

Geographic coordinates

Geographic coordinates: -123.11, 40.36374 (WGS84)
Relative position ON A STEEP HILLSIDE OF THE N. SLOPES OF DUBAKELLA CREEK, AN E. FLOWING FORK OF THE HEADWATERS OF HAY FORK.
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Geographic areas

Country State County
United States California Trinity

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 029N 011W 16 California

Commodities

Commodity Importance
Manganese Tertiary

Materials information

Materials Type of material
Psilomelane Ore
Pyrite Gangue

Host and associated rocks

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

Nearby scientific data

(1) -123.11, 40.36374

Comments on the geologic information

  • GEOL.DESC: DENSE BLACK CHERT BELT SEVERAL YARDS WIDE IS HEAVILY STAINED WITH MANGANESE OXIDE. SMALL AMOUNT OF LIMONITE IS MIXED WITH OXIDES NEAR SURFACE. PSILOMELANE OCCURS AS BANDS, SELVEDGES ON FRACTURE PLANES, AND SMALL VEINLETS IN THE CHERT. WHITE QUARTZ VEINLETS CARRYING PYRITE CUT THROUGH DARK GREEN CHERT.

Economic information

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Significant No

Land status

Ownership category National Forest

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Mineral Resources Data System MRDS M020322

Bibliographic references

  • Deposit

    D.O.M. BULL. 152 1950 PP. 315 , 317

  • Deposit

    D.O.M. BULL. 125 1943 P. 198

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JAN-1978 Killman, K.; Albers, J. U.S. Geological Survey