First Thought

Past Producer in Okanogan county in Washington, United States with commodities Silver, Lead, Copper, Zinc
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. Geologic structures
  11. Controls for ore emplacement
  12. Economic information about the deposit and operations
  13. Mining district
  14. Links to other databases
  15. Bibliographic references
  16. General comments
  17. Reporter information

Geologic information

Identification information

Deposit ID 10104278
MRDS ID SP00213
Record type Site
Current site name First Thought

Geographic coordinates

Geographic coordinates: -119.74006, 48.49289 (WGS84)

Site location context

Political divisions (FIPS codes)

Okanogan(county)

Washington(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Ruby Hill(quadrangle 1:24,000 scale)

Omak(quadrangle 1:100,000 scale)

Okanogan(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Okanogan(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
Willamette 035N 025E 31 NE4 Washington

Commodities

Commodity Importance
Silver Primary
Lead Primary
Copper Primary
Zinc Critical Primary

Materials information

Materials Type of material
Chalcocite Ore
Chalcopyrite Ore
Galena Ore
Sphalerite Ore
Stephanite Ore
Tetrahedrite Ore
Pyrite Gangue
Quartz Gangue

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Schist
    Stratigraphic age (youngest) Late Triassic
  • Host or associated Host
    Rock type Metamorphic Rock > Gneiss

Nearby scientific data

(1) -119.74006, 48.49289

Economic information

Geologic structures

Type of structure Regional
Structure description The Conconully Pluton Is A Directionless, Post-Tectonic Plutonic Rock That Intruded Into A Major Structural Zone (Stoffel, K.L., Dger, 1990, Oral Commun.).

Controls for ore emplacement

  • See Comments

Comments on the geologic information

  • THE MINERALIZATION AT THE FIRST THOUGHT OCCURS IN THE GNEISS AND QUARTZITE OF THE METAMORPHIC COMPLEX OF CONCONULLY NEAR THE CONTACT OF THE CONCONULLY PLUTON OF CRETACEOUS AGE (RINEHART, 1981; STOFFEL, 1990).

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Significant No

Mining district

District name Conconully, Ruby Hill Area

Comments on the production information

  • THE MINE PRODUCED ORE VALUED AT $66,000 FROM 1892 TO 1893. PRODUCTION CAME TO AN END DURING THE SILVER PANIC OF 1893. SEVERAL SMALL SHIPMENTS OF SILVER ORE WERE MADE FROM THE MINE IN THE 1920'S (MOEN, 1973, P. 16).

Reference information

Bibliographic references

General comments

Subject category Comment text
Deposit UNDERGROUND WORKINGS OF THE FIRST THOUGHT CONSIST OF MORE THAN 4000 FEET OF DRIFTS ON THREE LEVELS THAT HAVE A VERTICAL EXTENT OF 350 FEET (MOEN, 1973, P. 17). ; INFO.SRC : 1 PUB LIT

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JAN-1991 Berger, Mary A. U.S. Geological Survey
Updater 01-AUG-1993 Frank, Dave U.S. Geological Survey

Beyond USGS

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

External references