Last Chance Mine

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. Alteration
  9. Host and associated rocks
  10. Nearby scientific data
  11. Geologic structures
  12. Ore body information
  13. Controls for ore emplacement
  14. Economic information about the deposit and operations
  15. Mining district
  16. Ownership information
  17. Workings at the site
  18. Links to other databases
  19. Bibliographic references
  20. General comments
  21. Reporter information

Geologic information

Identification information

Deposit ID 10041534
MRDS ID M056614
Record type Site
Current site name Last Chance Mine
Alternate or previous names Ruby Lode Claim
Related records 10301688

Geographic coordinates

Geographic coordinates: -119.73506, 48.48844 (WGS84)
Elevation 914
Relative position NORTH END OF RUBY HILL.

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)

Federal lands

Bureau of Land Management(Bureau of Land Management OR)

Bureau of Land Management OR BLM(Type of land area)

BLM(Federal land areas administered by BLM)

Geographic areas

Country State County
United States Washington Okanogan

Public Land Survey System information

Meridian Township Range Section Fraction State
Willamette 035N 025E 31 Washington

Commodities

Commodity Importance
Silver Primary
Lead Primary
Copper Primary
Zinc Critical Secondary

Comments on the commodity information

  • PRODUCTION IN 1920, 1921, AND 1924.

Materials information

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

Alteration

  • (Local) With 6 To 10' Displacement

Analytical data

Result 30 OZ AG, 17% PB, 4% CU

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) Late Cretaceous
    Stratigraphic age (youngest) Late Cretaceous
    Stratigraphic age (youngest) Paleocene
    Stratigraphic age (youngest) Paleocene
  • Host or associated Host
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite
  • Host or associated Host
    Rock type Metamorphic Rock > Schist > Mica Schist
    Rock unit name Salmon Creek
    Rock description Salmon Creek

Nearby scientific data

(1) -119.73506, 48.48844

Economic information

Geologic structures

Type of structure Regional
Structure description Mica Schist - Granodiorite Contact Trends Generally Nw (Same As Regional Trend Of The Metamorphic Rocks In The Area.
Type of structure Local
Structure description Parts Of The Vein Have Been Displaced 6-10 Ft By Transverse Faults; The Nw Segments Of The Vein Are Generally Displaced To The Sw.

Ore body information

  • General form SHOOTS
    Strike N 50 W
    Dip 70 SW
    Length 198.12M
    Width 6.1M

Controls for ore emplacement

  • Quartz Vein In Granodiorite And Mica Schist In And About Contact Of Both.

Comments on the geologic information

  • GEOL.DESC: FISSURE QUARTZ

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1886
Discoverer John Clumen And James Milliken

Mining district

District name Conconcully District; Ruby Hill Area

Ownership information

  • Type Operator
    Owner Benton Bailey
    Home office Okanogan, Wa.
    First year 1949

Comments on the production information

  • ORE WAS OF UNKNOWN QUANITY AND WAS HAND SORTED.

Workings at the site

  • Type of workings Underground
    Length 198.12M
    Overall depth 91.44M
    Overall length 441.96M

Comments on the workings information

  • A SHAFT WAS SUNK TO A DEPTH OF 300 FT, AND, AT THE 100 FT AND 200 FT LEVELS, DRIFTS WERE DRIVEN ALONG THE VEIN. AT THE BOTTOM OF THE SHAFT, A CROSSCUT WAS DRIVEN 800 FT EASTWARD TO INTERSECT THE FIRST THOUGHT VEIN (RECORD NO. M056613). NEAR THE SHAFT COLLAR, A 650 FT ADIT WAS DRIVEN IN A SOUTHEASTERLY DIRECTION.

Reference information

Bibliographic references

  • Deposit

    WASH. DMG BULL. 37, PART II, P. 305.

  • Deposit

    WASH. DMG IC 49, P. 8, 17-18

  • Deposit

    WASH. GEOL. SUR. BULL 23, P. 189-260

  • Production

    WASH. DMG BULL 37, P. 305

General comments

Subject category Comment text
Deposit ORE SHOOTS AS MUCH AS 2-4 FT THICK AND 200 FT LONG.
Deposit CLAIM ORIGINALLY STAKED AS THE RUBY LODE WAS SOLD TO JOHNATHAN BOURNE JR, WHO PATENTED IT IN 1904 AS THE LAST CHANCE LODE. IN 1920 THE MINE WAS REOPENED.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-FEB-1975 Mccoy, Gail 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.

External references