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West Norcross Mine

Past Producer in San Luis Obispo county in California, United States with commodities Chromium, Iron
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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. Nearby scientific data
  9. Ore body information
  10. Economic information about the deposit and operations
  11. Mining district
  12. Land status
  13. Ownership information
  14. Links to other databases
  15. Bibliographic references
  16. General comments
  17. Reporter information

Geologic information

Identification information

Deposit ID 10237635
MRDS ID M100493
MAS/MILS ID 0060790129
Record type Site
Current site name West Norcross Mine
Alternate or previous names Brooklyn Mine, Norcross, Bernado Number Three, Manzanita, Victory Number Three, Sunrise Number Three
Related records 10043671

Geographic coordinates

Point of reference Main Entrance
Geographic coordinates: -120.74458, 35.39857 (WGS84)
Elevation 488
Location accuracy 250(meters)

Site location context

Political divisions (FIPS codes)

San Luis Obispo(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Atascadero(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)

Federal lands

Los Padres 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 San Luis Obispo

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 029 S 011 E 13 SWSE California

Commodities

Commodity Importance
Chromium Critical Tertiary
Iron Tertiary

Materials information

Materials Type of material
Aragonite Unknown
Calcite Unknown
Chromite Unknown
Talc Unknown
Tremolite Unknown

Nearby scientific data

Main Entrance (1) -120.74458, 35.39857
ListMap

Economic information

Ore body information

  • Strike N45W
    Dip 45N
    Length 26.2M
    Width 6.5M
    Depth to top 0M
    Field Value
    Type of Orebody #1 DISSEMINATED
    Primary mode of Origin MAGMATIC DIFFER
    Strike And Dip N45W:45N
    Minimum Depth to Top 0
    Avg. Thick. Unconsol. Mat. 0
    Min. Thick. Unconsol. Mat. 0
    Date of Last Modification 810326

Economic information about the deposit and operations

Operation type Surface-Underground
Development status Past Producer
Commodity type Metallic
Significant No

Mining district

District name Cuesta Pass

Land status

Ownership category National Forest

Ownership information

  • Type Owner
    Owner J. A Houlahan
    Home office California
    Year 1976
  • Type Owner
    Owner E. C. Cazier
    Home office California
    Year 1976

Reference information

Bibliographic references

  • Deposit

    CALIF. JOUR. MINES AND GEOL., V. 37, 1941, P. 143.

  • Deposit

    U.S. GEOLOGICAL SURVEY BULLETIN 945-B, 1944, P. 38.

  • Deposit

    CALIF. DIV. MINES BULLETIN 134, 1953, PART II, CHAPT. 2,

  • Deposit

    P. 68, 85.

General comments

Subject category Comment text
Deposit CHROMITE ORE AVERAGES 15 PERCENT CHROMIC OXIDE. AND E.C.CAZIER.LARGE TONNAGES OF CHROMITE WERE MINED TO 1943 THERE ARE NO DETAILED PRODUCTION RECORDS AVAILABLE. IN 1943,28 TONS OF ORE,HAVING A CR2O3 CONTENT OF 40.8 PERCE A CHROMIUM-IRON RATIO OF 2.65 TO 1 WAS MINED FROM THIS CLAIM INSUFFICIENT DATA FOR MATRIX CALCULATIONS.

Reporter information

Type Date Name Affiliation Comment
Reporter 20-AUG-1992 Ridenour, James U.S. Bureau of Mines

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.