Sheridan

Past Producer in Okanogan county in Washington, United States with commodities Silver, Gold
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 10104293
MRDS ID SP00283
Record type Site
Current site name Sheridan
Alternate or previous names Phil Sheridan
Related records 10252998

Geographic coordinates

Geographic coordinates: -118.85587, 48.77845 (WGS84)

Site location context

Political divisions (FIPS codes)

Okanogan(county)

Washington(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Bodie Mountain(quadrangle 1:24,000 scale)

Republic(quadrangle 1:100,000 scale)

Okanogan(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Kettle(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 038N 031E 24 SW4 OF NW4 Washington

Comments on the location information

  • IN A SMALL GULCH 1 MILE NORTH OF THE EAST FORK OF TORODA CREEK.

Commodities

Commodity Importance
Silver Primary
Gold Primary

Materials information

Materials Type of material
Calcite Gangue
Pyrite Gangue
Quartz Gangue

Host and associated rocks

  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Dacite
    Stratigraphic age (youngest) Eocene
    Stratigraphic age (youngest) Eocene
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Intermediate Volcanic Rock > Andesite
    Rock unit name Klondike Mountain Formation
    Rock description Klondike Mountain Formation

Nearby scientific data

(1) -118.85587, 48.77845

Economic information

Geologic structures

Type of structure Regional
Structure description The Toroda Creek Graben Is A Volcano-Tectonic Depression, Which Resulted From East-West Extension During The Eocene (Holder And Others, 1989).

Controls for ore emplacement

  • Silver Minerals Occur In A Series Of Closely Spaced, Silicified And Pyritized Shear Zones In Altered And Silicified Andesites And Dacites. Brecciation Of The Rocks Accompanied The Shearing, And Clasts Of The Breccia Have Been Considerably Altered And Silicified By Hydrothermal Solutions. The Main Vein Is 1-7 Feet Wide, Strikes N20e, And Dips 50nw. During Mining Operations It Was Necessary To Closely Assay The Vein Material In Order To Establish Borders Of The Ore Shoots (Moen, 1980, P. 72).

Comments on the geologic information

  • THE ORE IS IN ALTERED AND SILICIFIED VOLCANIC ROCKS OF THE EOCENE KLONDIKE MOUNTAIN FORMATION. (THE GEOLOGY HERE IS SIMILAR TO THAT DESCRIBED FOR THE AMERICAN FLAG MINE).

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No

Mining district

District name Sheridan

Comments on the production information

  • BETWEEN 1906 AND 1919, SHIPMENTS OF HIGH-GRADE GOLD-SILVER ORE WERE MADE TO SMELTERS. IN 1918 A 50-TON/DAY FLOTATION MILL WAS BUILT AT THE MINE, AND CONCENTRATES AVERAGING AS MUCH AS 300OZ/TON AG WERE SHIPPED UNTIL 1920. FOR THIS PERIOD, THE MINE PRODUCTION WAS ESTIMATED AT $60,000 TO $100,000 (MOEN, 1980, P. 72).

Reference information

Bibliographic references

General comments

Subject category Comment text
Deposit A 50-TON/DAY FLOTATION MILL WAS BUILT IN 1918. MOST ADITS HAVE HEADINGS OF N35E. THE VEIN WAS MINED FROM SEVERAL LEVELS OVER A VERTICAL DISTANCE OF ABOUT 500 FEET AND ALONG STRIKE FOR ABOUT 400 FEET. SEVERAL RAISES CONNECT THE DIFFERENT LEVELS OF THE MINE (MOEN, 1980, P. 72). ; INFO.SRC : 1 PUB LIT

Reporter information

Type Date Name Affiliation Comment
Reporter 01-FEB-1991 Berger, Mary A. U.S. Geological Survey
Updater 01-JAN-1994 Frank, Dave U.S. Geological Survey

Beyond USGS

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

External references