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Grummett Manganese Mine No. 2

Occurrence in Stanislaus 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. Nearby scientific data
  8. Ore body information
  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 10033649
MRDS ID M020267
Record type Site
Current site name Grummett Manganese Mine No. 2

Geographic coordinates

Geographic coordinates: -121.34491, 37.52714 (WGS84)
Relative position JUST S. OF SPRING CREEK, ONE OF THE BRANCHES OF INGRAM CANYON. 11 MI. BY ROAD TO WESTLEY.

Site location context

Political divisions (FIPS codes)

Stanislaus(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Solyo(quadrangle 1:24,000 scale)

Stockton(quadrangle 1:100,000 scale)

San Jose(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Panoche-San Luis Reservoir(hydrologic unit)

San Joaquin(hydrologic accounting unit)

San Joaquin(hydrologic subregion)

California(hydrologic region)

Geographic areas

Country State County
United States California Stanislaus

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 005S 006E 06 California

Comments on the location information

  • LOCATED IN SE 1/4 SECTION 6

Commodities

Commodity Importance
Manganese Critical Tertiary

Analytical data

Result SORTED ORE GRADES 30 PERCENT MANGANESE

Nearby scientific data

(1) -121.34491, 37.52714
ListMap

Economic information

Ore body information

  • Thickness 0.3M
    Depth to bottom 9.14M

Comments on the geologic information

  • GEOL.DESC: ORE ZONE TRENDS N 60 E. MANGANESE OCCURS AS BLACK OXIDE IN THE FORM OF STAINS, LAYERS AND POCKETS, IN THE UPPER PORTION OF A BED OF MASSIVE WHITE CHERT, DIPPING 65 N. ENCLOSING ROCKS ARE THIN-BEDDED CHERTS AND SHALES. ORE BEARING LAYER VARIES IN THICKNESS FROM 1/2 TO 1 FT. IN E WORKINGS, ORE STRIKES N 20 E AND DIPS 75 E.

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 P. 291

  • Deposit

    D.O.M. BULL. 125 1943 P. 190

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.