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Seattle-Cascade

Occurrence in King county in Washington, United States with commodities Silver, Lead, Zinc, Copper, Gold, Arsenic
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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. Mineral occurrence model information
  9. Host and associated rocks
  10. Nearby scientific data
  11. Ore body information
  12. Economic information about the deposit and operations
  13. Mining district
  14. Land status
  15. Ownership information
  16. Workings at the site
  17. Links to other databases
  18. Bibliographic references
  19. General comments
  20. Reporter information

Geologic information

Identification information

Deposit ID 10048622
MRDS ID MP00221
Record type Site
Current site name Seattle-Cascade
Alternate or previous names Tripple S, Silver Dollar, Copper Plate, Silver Dollar and Copper Plate
Related records 10055932

Geographic coordinates

Geographic coordinates: -121.41953, 47.66814 (WGS84)
Elevation 1151
Relative position ABOUT 2 MI EAST OF CONEY LAKE

Site location context

Political divisions (FIPS codes)

King(county)

Washington(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Grotto(quadrangle 1:24,000 scale)

Skykomish River(quadrangle 1:100,000 scale)

Wenatchee(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Skykomish(hydrologic unit)

Puget Sound(hydrologic accounting unit)

Puget Sound(hydrologic subregion)

Pacific Northwest(hydrologic region)

Federal lands

Mt. Baker-Snoqualmie National Forest(National Forest)

National Forest FS(Type of land area)

FS(Federal land areas administered by FS)

Alpine Lakes Wilderness(Wilderness)

Wilderness FS(Type of land area)

FS(Federal land areas administered by FS)

Geographic areas

Country State County
United States Washington King

Public Land Survey System information

Meridian Township Range Section Fraction State
Willamette 025N 011E 17 CENTER OF N2 Washington

Comments on the location information

  • WEST OF MILLER RIVER

Commodities

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

Materials information

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

Analytical data

Result AS MUCH AS 30 OZ/TON AG. AVERAGE OF 4 OLD ASSAYS $15.27/TON AG, $11.31/TON PB, $7.08/TON CU, $2/TON AU.

Mineral occurrence model information

Model code 85
USGS model code 22c
Deposit model name Polymetallic veins
Mark3 model number 46

Host and associated rocks

  • Host or associated Host
    Rock type Plutonic Rock > Granitoid > Tonalite
    Rock unit name Snoqualmie Batholith, Northern Phase;Snoqualmie Batholith, Northern Phase
    Rock description Snoqualmie Batholith, Northern Phase;Snoqualmie Batholith, Northern Phase

Nearby scientific data

(1) -121.41953, 47.66814
ListMap

Economic information

Ore body information

  • General form VEIN
    Thickness 0.2M

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Deposit size Small
Significant No
Year of first production 1901
Production years 1940

Mining district

District name Miller River District

Land status

Ownership category National Wilderness
Area name In Alpine Lakes Wilderness In Mount Baker-Snoqualmie National Forest

Ownership information

  • Type Owner
    Owner Seattle-Cascade Mining Co.
    First year 1909

Comments on the production information

  • A FEW CARLOADS OF PB ORE PRIOR TO 1901, SMALL PRODUCTION IN 1940

Workings at the site

  • Type of workings Underground
    Length 579.12M

Comments on the workings information

  • 3 ADITS, RAISE

Reference information

Bibliographic references

  • Deposit

    DERKEY, R.E., JOSEPH, N.L., AND LASMANIS, RAYMOND, 1990, METAL MINES OF WASHINGTON - PRELIMINARY REPORT: WASHINGTON DIVISION OF GEOLOGY AND EARTH RESOURCES OPEN-FILE REPORT 90-18, P. 121.

  • Deposit

    HUNTTING, M.T., 1956, INVENTORY OF WASHINGTON MINERALS - PART II, METALLIC MINERALS: WASHINGTON DIVISION OF MINES AND GEOLOGY BULLETIN 37, V. 1, P. 297.

  • Production

    HUNTTING, 1956

General comments

Subject category Comment text
Deposit MINERALIZED SHEAR ZONES TO 1.5 FT WIDE CONTAINING BANDS OF ORE

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUN-1992 Peterson, Jocelyn A. 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