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Crown Point Claim, Seeley Group

Past Producer in San Luis Obispo 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. Alteration
  9. Host and associated rocks
  10. Nearby scientific data
  11. Ore body information
  12. Economic information about the deposit and operations
  13. Mining district
  14. Land status
  15. Ownership information
  16. Reserves and resources
  17. Links to other databases
  18. Bibliographic references
  19. Reporter information

Geologic information

Identification information

Deposit ID 10098570
MRDS ID M100455
Record type Site
Current site name Crown Point Claim, Seeley Group
Related records 10262454

Geographic coordinates

Geographic coordinates: -120.6993, 35.38775 (WGS84)
Elevation 762
Location accuracy 1000(meters)
Relative position Assumed Spot Center Nw Of Sw, Sect. 21, Assumed Spot Center Nw Of Sw, Sect. 21

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)

Salinas(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 029S 012E 21 NW OF SW California

Comments on the location information

  • CLAIM LOCATED IN NW CORNER OF SW 1/4, SECT. 21.

Commodities

Commodity Importance
Chromium Critical Primary

Materials information

Materials Type of material
Chromite Ore

Alteration

  • (Local) Serpentinization Of Host Rock

Analytical data

Result ORE 15-20% CR2O3

Host and associated rocks

  • Host or associated Host
    Rock type Plutonic Rock > Ultramafic Intrusive Rock > Peridotite > Dunite
    Stratigraphic age (youngest) Late Jurassic

Nearby scientific data

(1) -120.6993, 35.38775
ListMap

Economic information

Ore body information

  • General form IRREGULAR

Comments on the geologic information

  • CHROMITE OCCURS IN NUMEROUS SERPENTINIZED ULTRAMAFIC BODIES THAT ARE WIDELY DISTRIBUTED IN A NW TRENDING BELT OF THE FRANCISCAN FM.

Economic information about the deposit and operations

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

Mining district

District name Cerro Alto-Cuesta Pass Area

Land status

Ownership category Military Reservation

Ownership information

  • Type Owner
    Owner C. Seeley And G. Miller

Comments on the production information

  • APPROX. 300 TONS ORE MINED IN 1918 BUT LITTLE WAS SHIPPED.

Reserves and resources

  • Type In-situ
    Estimate year 1944
    Commodity Subtype Grade units Group Importance Year
    Chromium Cr2O3 5 wt-pct Chromium Major 1944

Comments on the reserve resource information

  • USGS BULL. 945-B, 1944, P. 43

Comments on the workings information

  • WORKINGS CONSIST OF A LARGE OPEN CUT APPROX. 50 FT LONG, 15 FT WIDE AND 15 FT DEEP AT THE FACE.

Reference information

Bibliographic references

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUL-82 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.