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

Little Chopaka Group

Prospect in Okanogan county in Washington, United States with commodities Lead, Silver, Gold, Copper, Zinc
Map
XML
JSON
KML
B
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. Ownership information
  15. Links to other databases
  16. Bibliographic references
  17. General comments
  18. Reporter information

Geologic information

Identification information

Deposit ID 10097255
MRDS ID M056679
Record type Site
Current site name Little Chopaka Group
Alternate or previous names Six Eagles
Related records 10156203

Geographic coordinates

Geographic coordinates: -119.65285, 48.95956 (WGS84)
Relative position ABOUT ONE MILE SOUTH OF NIGHTHAWK.

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)

Geographic areas

Country State County
United States Washington Okanogan

Public Land Survey System information

Meridian Township Range Section Fraction State
040N 025E 14 Washington

Commodities

Commodity Importance
Lead Primary
Silver Primary
Gold Primary
Copper Tertiary
Zinc Critical Tertiary

Materials information

Materials Type of material
Chalcopyrite Ore
Galena Ore
Pyrite Ore
Sphalerite Ore
Quartz Gangue
Sericite Gangue

Analytical data

Result $5 PB, AG, AND AU (TOTAL) PER TON.

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Granitoid > Granite
    Rock unit name Similkameen
    Rock description Similkameen
    Stratigraphic age (youngest) Late Cretaceous
    Stratigraphic age (youngest) Late Cretaceous
    Stratigraphic age (youngest) Late Cretaceous
  • Host or associated Host
    Rock type Plutonic Rock > Granitoid > Granite

Nearby scientific data

(1) -119.65285, 48.95956
ListMap

Economic information

Ore body information

  • General form 1-3 VEIN
    Strike N 2 E
    Dip 45 W
    Width 0.91M

Controls for ore emplacement

  • Fault Zone

Comments on the geologic information

  • THE TUNNEL SHOULD HAVE CUT THE VEIN AT 1500-1600 FT, BUT INSTEAD A SEAM OF GOUGE WAS ENCOUNTERED.

Economic information about the deposit and operations

Development status Prospect
Commodity type Metallic
Deposit size Small
Significant No

Mining district

District name Nighthawk District

Ownership information

  • Type Owner
    Owner Hope Mining Co.
    First year 1919

Comments on the workings information

  • 200 FT SHAFT ON THE LEDGE AND A TUNNEL 2000 FT LONG ON A LEVEL 500 FT BELOW.

Comments on development

  • SHAFT AND TUNNEL.

Reference information

Bibliographic references

  • Deposit

    WASH. DMG BULL. 37, PART II, P. 221.

  • Deposit

    WASH. DMG BULL. 64, P. 94-95, PLATES 1-2

  • Deposit

    WASH. GEOL. SUR. BULL 5, P. 90-91

General comments

Subject category Comment text
Deposit LOCATED IN FAULT ZONE
Deposit 11 UNPATENTED CLAIMS.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-FEB-1975 Greene, Robert U.S. Geological Survey
Updater 01-JAN-1983 Lawson, William A. (Evarts, Russell C.) 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