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  2. Online Spatial Data
  3. Mineral Resource Data System (MRDS)

Helmke Occurrence

Past Producer in Butte county in California, United States with commodity Chromium
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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. Host and associated rocks
  9. Nearby scientific data
  10. Ore body information
  11. Economic information about the deposit and operations
  12. Mining district
  13. Ownership information
  14. Links to other databases
  15. Bibliographic references
  16. Reporter information

Geologic information

Identification information

Deposit ID 10028401
MRDS ID M005350
Record type Site
Current site name Helmke Occurrence
Related records 10138215

Geographic coordinates

Geographic coordinates: -121.62162, 39.80265 (WGS84)
Location accuracy 1000(meters)
Relative position Assumed Spot Center Se, 34.

Site location context

Political divisions (FIPS codes)

Butte(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Paradise East(quadrangle 1:24,000 scale)

Chico(quadrangle 1:100,000 scale)

Chico(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

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 Butte

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 023N 003E 34 SE California

Comments on the location information

  • LOCATION UNCERTAIN

Commodities

Commodity Importance
Chromium Critical Primary

Materials information

Materials Type of material
Chromite Ore

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Serpentinite

Nearby scientific data

(1) -121.62162, 39.80265
ListMap

Economic information

Ore body information

  • General form LENSE

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No

Mining district

District name Magalia

Ownership information

  • Type Operator
    Owner Rae Helmke
    Home office San Francisco, Ca.

Comments on the production information

  • SMALL PRODUCTION WAS REPORTED IN 1947

Reference information

Bibliographic references

  • Deposit

    CALIF. DIV. OF MINES: J. VOL. 45 #3, P. 444 & 421

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUN-72 Gere, W. U.S. Geological Survey
Updater 01-JAN-83 Oster, Karel L. (Albers, John P.) 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.