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Little Chopaka Claims

Occurrence in Okanogan county in Washington, United States with commodities Chromium, Platinum
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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. Mineral occurrence model information
  9. Host and associated rocks
  10. Nearby scientific data
  11. Ore body information
  12. Controls for ore emplacement
  13. Economic information about the deposit and operations
  14. Mining district
  15. Land status
  16. Ownership information
  17. Links to other databases
  18. Bibliographic references
  19. General comments
  20. Reporter information

Geologic information

Identification information

Deposit ID 10041565
MRDS ID M056657
Record type Site
Current site name Little Chopaka Claims
Alternate or previous names Defense, Peerless

Geographic coordinates

Geographic coordinates: -119.69785, 48.96066 (WGS84)
Elevation 1100
Location accuracy 1000(meters)
Relative position ABOUT 2.5 MI NORTH OF CHOPAKA LAKE, Est Imated Within Quarter Section

Site location context

Political divisions (FIPS codes)

Okanogan(county)

Washington(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Nighthawk(quadrangle 1:24,000 scale)

Oroville(quadrangle 1:100,000 scale)

Okanogan(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Similkameen(hydrologic unit)

Upper Columbia(hydrologic accounting unit)

Upper Columbia(hydrologic subregion)

Pacific Northwest(hydrologic region)

Federal lands

ST(Federal land areas administered by ST)

Geographic areas

Country State County
United States Washington Okanogan

Public Land Survey System information

Meridian Township Range Section Fraction State
Willamette 040N 025E 16 SW4 OF SE4 Washington

Comments on the location information

  • ON LITTLE CHOPAKA MOUNTAIN. PROBABLY PART OF PEERLESS COPPER PROPERTY

Commodities

Commodity Importance
Chromium Critical Primary
Platinum Critical Tertiary

Comments on the commodity information

  • PLATINUM HAS BEEN REPORTED ON LITTLE CHOPAKA MOUNTAIN, MOST LIKELY IN ASSOCIATION WITH THE CHROMITE DEPOSIT, BUT ITS OCCURRENCE HAS NOT BEEN VERIFIED

Materials information

Materials Type of material
Chromite Ore
Olivine Gangue

Analytical data

Result ASSAY: 27.06% CR2O3

Mineral occurrence model information

Model code 15
USGS model code 8a
Deposit model name Podiform chromite (minor)
Mark3 model number none

Host and associated rocks

  • Host or associated Associated
    Rock type Metamorphic Rock > Metavolcanic Rock
    Rock unit name Palmer Mountain Greenstone
    Rock description Palmer Mountain Greenstone
    Stratigraphic age (youngest) Late Triassic
    Stratigraphic age (youngest) Late Triassic
    Stratigraphic age (youngest) Late Triassic
  • Host or associated Host
    Rock type Plutonic Rock > Ultramafic Intrusive Rock > Peridotite

Nearby scientific data

(1) -119.69785, 48.96066
ListMap

Economic information

Ore body information

  • General form DISSEMINATED, PODS
    Length 80.47M
    Width 402.33M

Controls for ore emplacement

  • Magmatic Segregation

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Deposit size Small
Significant No

Mining district

District name Nighthawk District

Land status

Ownership category Private

Ownership information

  • Type Owner
    Owner Bridey, William And Everett, L. H.
    First year 1941

Comments on development

  • 4 CLAIMS

Reference information

Bibliographic references

  • Deposit

    HUNTTING, M.T., 1956, INVENTORY OF WASHINGTON MINERALS - PART II, METALLIC MINERALS: WASHINGTON DIVISION OF MINES AND GEOLOGY BULLETIN 37, V. 1, P. 38, 69, 281

General comments

Subject category Comment text
Deposit PERIDOTITE THAT CONTAINS THE CHROMITE IS 0.125-0.25 MI WIDE AND 0.5 MI LONG

Reporter information

Type Date Name Affiliation Comment
Reporter 01-FEB-75 Greene, Robert U.S. Geological Survey
Updater 01-JAN-83 Lawson, William A. (Evarts, Russell C.) U.S. Geological Survey
Updater 01-JUL-91 Peterson, Jocelyn A. U.S. Geological Survey

Beyond USGS

Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.

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