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First Thought Mine

Past Producer in Okanogan county in Washington, United States with commodities Silver, Lead, Copper, Zinc
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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. Geologic structures
  11. Ore body information
  12. Economic information about the deposit and operations
  13. Mining district
  14. Ownership information
  15. Workings at the site
  16. Links to other databases
  17. Bibliographic references
  18. General comments
  19. Reporter information

Geologic information

Identification information

Deposit ID 10098469
MRDS ID M056613
Record type Site
Current site name First Thought Mine
Related records 10180421

Geographic coordinates

Geographic coordinates: -119.74006, 48.49289 (WGS84)
Elevation 914
Relative position ABOUT .7 MILE SW OF RUBY CITY.

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 NE Washington

Comments on the location information

  • NW END OF RUBY HILL; UPPER ADIT AT 3250 FT ELEV.

Commodities

Commodity Importance
Silver Primary
Lead Secondary
Copper Tertiary
Zinc Critical Tertiary

Comments on the commodity information

  • PRODUCTION FROM 1892-1893 AND IN 1920S (SMALL AMOUNTS).

Materials information

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

Analytical data

Result ORE SHOOTS: 75-100 OZ AG/TON
Result MASSIVE QTZ: 6-8 OZ AG/TON
Result OLD ASSAYS ACROSS THE VEIN SHOWED $30 AG/TON.

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite
    Rock unit name Loup Loup
    Rock description Loup Loup
    Stratigraphic age (youngest) Paleocene
    Stratigraphic age (youngest) Late Cretaceous
    Stratigraphic age (youngest) Paleocene
    Stratigraphic age (youngest) Late Cretaceous
  • Host or associated Host
    Rock type Metamorphic Rock > Metasedimentary Rock > Quartzite
  • Host or associated Host
    Rock type Metamorphic Rock > Gneiss

Nearby scientific data

(1) -119.74006, 48.49289
ListMap

Economic information

Geologic structures

Type of structure Local
Structure description Foliation Parallels Strike Of Ore Bodies.

Ore body information

  • General form DISCONTINUOUS, LENTICULAR MASSES
    Strike N10E
    Dip 55-60E
    Thickness 27.43M
    Width 213.36M

Comments on the geologic information

  • GEOL.DESC: STRONGLY FOLIATED

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Medium
Significant No
Discovery year 1886
Discoverer J. Kladisky, R. Dilderback, And P. Mcgell
Year of first production 1892
Year of last production 1925

Mining district

District name Conconcully District; Ruby Hill Area

Ownership information

  • Type Operator
    Owner Benton Bailey
    Home office Okanogan, Wa.
    First year 1949
  • Type Owner
    Owner First Thought Silver Mining Co.
    First year 1922
    Last year 1926

Workings at the site

  • Type of workings Underground
    Overall length 1219.2M

Comments on the workings information

  • UNDERGROUND MINE WORKINGS AT THE FIRST THOUGHT MINE ARE IN EXCESS OF 4000 FT AND ARE ON THREE LEVELS THAT HAVE A VERTICAL EXTENT OF 350 FT. ADIT NO. 1, THE MAIN ADIT, IS AT ELEVATION 2960 FT, AND IS ABOUT 50 FT WEST OF THE RUBY HILL ROAD. THE ADIT HEADS S60E AND IS CAVED AT THE PORTAL (1973). JUDGING FROM THE DUMP SIZE, MINE WORKINGS IN THIS ADIT COULD BE ABOUT 2000 LINEAR FT. ADIT NO. 2 IS 450 FT SE OF ADIT NO. 1, AND ABOUT 150 FT ABOVE IT. THIS ADIT HEADS S75E FOR 65 FT, WHERE IT IS CAVED; AT 60 FT FROM THE PORTAL A DRIFT HEADS SOUTH FOR AN UNDETERMINED DISTANCE. THE DUMP AT ADIT NO. 2 SUGGESTS AT LEAST 700 FT OF WORKINGS. THE UPPERMOST ADIT, ADIT NO. 3, IS 225 FT SE AND 100 FT ABOVE ADIT NO. 2. THIS ADIT IS CAVED AT THE PORTAL, BUT THE DUMP SIZE SUGGESTS 800 FT OF WORKINGS. THERE ARE, ALSO, 3 SHAFTS OF UNKNOWN DEPTHS IN THE SW CORNER OF THE CLAIM. THESE LIE IN A LINE TRENDING GENERALLY NE. INTERIOR WORKINGS ARE UNKNOWN DUE TO CAVING IN THE ADITS.

Comments on development

  • ADITS, CROSSCUTS, AND DRIFTS; AND SHAFTS

Reference information

Bibliographic references

  • Deposit

    WASH. DMG BULL. 37, PART II, P. 303.

  • Deposit

    USGS BULL 23, P. 248, 255

  • Deposit

    WASH. DMG IC 49, P. 8,9, 16-17

  • Production

    MOEN, 1973, P. 16

General comments

Subject category Comment text
Deposit DISCONTINUOUS LENTICULAR MASSES OF MINERALIZED QTZ; ORE MINERALS ARE CONCENTRATED IN ORE SHOOTS ALONG THE WALLS OF THE QTZ LENSES; SOME SHOOTS ARE UP TO 5 FT THICK. MINOR ORE IS DISSEMINATED IN THE MASSIVE QTZ. LENSES TO 700 FT IN DIAM.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-FEB-1975 Unknown U.S. Geological Survey
Updater 01-SEP-1982 Lawson, William A. Cevarts, Russell C.) U.S. Geological Survey

Beyond USGS

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

External references

Maps centered on this site