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Isom Prospect

Occurrence in San Luis Obispo 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 10095191
MRDS ID M020156
Record type Site
Current site name Isom Prospect
Related records 10238155

Geographic coordinates

Geographic coordinates: -120.5543, 35.2058 (WGS84)
Relative position 3.5 MI. N. 83 E. FROM EDNA STATION ON THE SOUTHERN PACIFIC RAILROAD.

Site location context

Political divisions (FIPS codes)

San Luis Obispo(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Arroyo Grande NE(quadrangle 1:24,000 scale)

San Luis Obispo(quadrangle 1:100,000 scale)

San Luis Obispo(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Central Coastal(hydrologic unit)

Central California Coastal(hydrologic accounting unit)

Central California Coastal(hydrologic subregion)

California(hydrologic region)

Geographic areas

Country State County
United States California San Luis Obispo

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 031S 013E 23 California

Commodities

Commodity Importance
Manganese Critical Tertiary

Analytical data

Result ORE GRADE LESS THAN 25 PERCENT MANGANESE, MORE THAN 50 PERCENT SILICA.

Nearby scientific data

(1) -120.5543, 35.2058
ListMap

Economic information

Ore body information

  • Thickness 2.44M

Comments on the geologic information

  • GEOL.DESC: AN 8 FT. LAYER OF MASSIVE CHERT IS IMPREGNATED WITH BLACK MANGANESE OXIDE. THIN-BEDDED GREEN CHERTS LIE ABOVE AND BELOW THE MASSIVE BED. THE ATTITUDE IS N. 27 W, 40 N. 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 PP. 231 , 233

  • Deposit

    D.O.M. BULL. 125 1943 P. 169

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.