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  3. Mineral Resource Data System (MRDS)

Gold Mountain Prospect

Occurrence in King county in Washington, United States with commodities Silver, Gold, Antimony, Copper
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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. Alteration
  9. Mineral occurrence model information
  10. Host and associated rocks
  11. Nearby scientific data
  12. Ore body information
  13. Economic information about the deposit and operations
  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 10009025
MRDS ID D001649
Record type Site
Current site name Gold Mountain Prospect

Geographic coordinates

Geographic coordinates: -121.41842, 47.71231 (WGS84)
Elevation 335
Location accuracy 1000(meters)
Relative position ABOUT 1.5 MI SOUTH OF GROTTO, Estimated From Description Given In Purdy

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)

Geographic areas

Country State County
United States Washington King

Public Land Survey System information

Meridian Township Range Section Fraction State
Willamette 026N 011E 29 NW4 OF SE4 Washington

Comments on the location information

  • JUST BELOW NORTHWEST SIDE OF MONEY CREEK ROAD 1.2 MI FROM INTERSECTION WITH SKYKOMISH ROAD

Commodities

Commodity Importance
Silver Primary
Gold Primary
Antimony Critical Primary
Copper Primary

Materials information

Materials Type of material
Chalcopyrite Ore

Alteration

  • (Local) Pyritization, Kaolinization

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 Volcanic Rock (Aphanitic) > Intermediate Volcanic Rock > Andesite
    Rock unit name Swauk Formation, Silver Pass Volcanic Member
    Rock description Swauk Formation, Silver Pass Volcanic Member
    Stratigraphic age (youngest) Eocene
    Stratigraphic age (youngest) Eocene

Nearby scientific data

(1) -121.41842, 47.71231
ListMap

Economic information

Ore body information

  • General form VEIN

Comments on the geologic information

  • GUALTIERI AND OTHERS INDICATE AREA IS UNDERLAIN BY ROCKS OF THE SNOQUALMIE BATHOLITH, BUT GEOLOGIC MAP SHOWS BATHOLITH TO SOUTH WITH AREA OF DEPOSIT UNDERLAIN BY SWAUK FORMATION. POSSIBLY DEPOSIT CONTAINS ROCKS OF BATHOLITH THAT ARE TOO SMALL TO SHOW ON GEOLOGIC MAP

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1900

Land status

Ownership category National Forest
Area name In Mount Baker-Snoqualmie National Forest

Ownership information

  • Type Owner
    Owner Weyerhaeuser Timber Co.
    First year 1936

Workings at the site

  • Type of workings Underground
    Length 365.76M

Comments on the workings information

  • 3 ADITS, MOSTLY CAVED

Reference information

Bibliographic references

  • Deposit

    PURDY, C.P., JR., 1951, ANTIMONY OCCURRENCES OF WASHINGTON: WASHINGTON DIVISION OF MINES AND GEOLOGY BULLETIN 39, P. 74-75.

  • Deposit

    HUNTTING, M.T., 1956, INVENTORY OF WASHINGTON MINERALS - PART II, METALLIC MINERALS: WASHINGTON DIVISION OF MINES AND GEOLOGY BULLETIN 37, V. 1, P. 296.

  • Deposit

    GUALTIERI, J.L., THURBER, H.K., MILLER, M.S., MCMAHAN, A.B., AND FEDERSPIEL, F.F., 1975, MINERAL RESOURCES OF ADDITIONS TO THE ALPINE LAKES STUDY AREA, CHELAN, KING, AND KITTITAS COUNTIES, WASHINGTON: U.S. GEOLOGICAL SURVEY OPEN-FILE REPORT 75-3, PLATE 1.

  • Deposit

    TABOR, R.W., FRIZZELL, V.A., JR., BOOTH, D.B., WHETTEN, J.T., WAITT, R.B., JR., AND ZARTMAN, R.E., 1982, PRELIMINARY GEOLOGIC MAP OF THE SKYKOMISH RIVER 1:100,000 QUADRANGLE, WASHINGTON: U.S. GEOLOGICAL SURVEY OPEN-FILE REPORT 82-747, SCALE 1:100,000.

General comments

Subject category Comment text
Deposit LAT. & LONG. ARE GENERAL ; INFO.SRC : 1 PUB LIT

Reporter information

Type Date Name Affiliation Comment
Reporter 01-AUG-75 Miller, M. H. U.S. Geological Survey
Updater 01-MAY-92 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