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  3. Mineral Resource Data System (MRDS)

Costa Claim

Past Producer in Trinity 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. Controls for ore emplacement
  12. Economic information about the deposit and operations
  13. Mining district
  14. Land status
  15. Ownership information
  16. Links to other databases
  17. Bibliographic references
  18. Reporter information

Geologic information

Identification information

Deposit ID 10103906
MRDS ID M100252
Record type Site
Current site name Costa Claim
Alternate or previous names Tiger Lily, Shasta Lily

Geographic coordinates

Geographic coordinates: -122.52555, 41.15152 (WGS84)
Elevation 1366
Location accuracy 1000(meters)
Relative position APPROX. 11 MILES W. OF CASTELLA, CA., Assumed Spot At Center Of Sw, Sect. 14

Site location context

Political divisions (FIPS codes)

Trinity(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Mumbo Basin(quadrangle 1:24,000 scale)

Mount Shasta(quadrangle 1:100,000 scale)

Weed(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Trinity(hydrologic unit)

Klamath(hydrologic accounting unit)

Klamath-Northern California Coastal(hydrologic subregion)

California(hydrologic region)

Federal lands

Shasta-Trinity 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 Trinity

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 038N 006W 14 California

Comments on the location information

  • PROPERTY LIES ON WEST SIDE OF CROW CREEK, 0.4 MILES BELOW FOREST SERVICE ROAD.

Commodities

Commodity Importance
Chromium Critical Primary

Comments on the commodity information

  • ORE WAS A GOOD MILLING GRADE (1950'S)

Materials information

Materials Type of material
Chromite Ore

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Mafic Intrusive Rock > Gabbro
    Stratigraphic age (youngest) Late Cretaceous
    Stratigraphic age (youngest) Late Cretaceous
  • Host or associated Host
    Rock type Metamorphic Rock > Serpentinite

Nearby scientific data

(1) -122.52555, 41.15152
ListMap

Economic information

Ore body information

  • General form IRREGULAR
    Strike N 55 E
    Dip 72 SE
    Width 2.44M

Controls for ore emplacement

  • Concentrations Of Chromite Terminated By Faults

Comments on the geologic information

  • THE DEPOSIT OCCURS IN A LARGE PERIDOTITE BODY THAT COVERS APPROX. 300 SQ. MILES OF NE TRINITY CO.

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Year of first production 1942
Year of last production 1957

Mining district

District name Crow Creek Area

Land status

Ownership category National Forest

Ownership information

  • Type Operator
    Owner Helmke, Thomas And Jan Sen, San Franciso, Ca.
    First year 1955
  • Type Owner
    Owner George Costa, Castella, Ca.

Comments on development

  • MINING OPERATIONS SUSPENDED BECAUSE OF EXCESSIVE AMOUNT OF OVERBURDEN ACCUMULATED DURING MINING OPERATIONS.

Reference information

Bibliographic references

  • Deposit

    WELLS, F.G. AND HAWKES, H.E., 1965, CDMG BULL 134, PART 1, CHAPT. 3, P. 169, 170, 173, 175.

  • Deposit

    O'BRIEN, J.C., 1965, CDMG COUNTY REPORT NO. 4, P. 19, 59.

  • Production

    CDMG BULL 134, CHAPT. 3, PART 1, P. 170; CDMG COUNTY REPORT NO. 4, P. 19.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUN-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.