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National Prospect

Occurrence in Snohomish county in Washington, United States with commodities Copper, Gold, Silver, 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 10036818
MRDS ID M025739
Record type Site
Current site name National Prospect
Related records 10228669

Geographic coordinates

Geographic coordinates: -121.4476, 47.96314 (WGS84)
Elevation 1219
Location accuracy 1000(meters)
Relative position ABOUT 1 MI NORTHWEST OF MINERAL CITY SITE, Estimated Near West Fork Silver Creek At Given Elevation

Site location context

Political divisions (FIPS codes)

Snohomish(county)

Washington(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Monte Cristo(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 Snohomish

Public Land Survey System information

Meridian Township Range Section Fraction State
Willamette 029N 011E 31 Washington

Comments on the location information

  • UNSURVEYED. ON EAST SIDE WEST FORK SILVER CREEK

Commodities

Commodity Importance
Copper Primary
Gold Primary
Silver Primary
Arsenic Critical Tertiary

Materials information

Materials Type of material
Chalcopyrite Ore
Pyrite Ore

Analytical data

Result $35-300/TON CU+AU+AG

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
    Rock unit name Index Batholith
    Rock description Index Batholith
    Stratigraphic age (youngest) Oligocene

Nearby scientific data

(1) -121.4476, 47.96314
ListMap

Economic information

Ore body information

  • General form VEIN
    Length 22.86M

Comments on the geologic information

  • DIKE MAY BE RELATED TO INDEX BATHOLITH OR POSSIBLY TO TONALITE OF SILVER CREEK

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Deposit size Small
Significant No

Mining district

District name Silver Creek District

Land status

Ownership category National Forest
Area name In Snoqualmie National Forest

Ownership information

  • Type Owner
    Owner E. H. Hubbart, T. D. Brown, Thomas Lockwood
    First year 1892

Workings at the site

  • Type of workings Underground
    Length 48.77M
    Overall depth 6.1M

Comments on the workings information

  • SHAFT, 2 ADITS

Reference information

Bibliographic references

  • Deposit

    HUNTTING, M.T., 1956, INVENTORY OF WASHINGTON MINERALS - PART II, METALLIC MINERALS: WASHINGTON DIVISION OF MINES AND GEOLOGY BULLETIN 37, V. 1, P. 88.

  • 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 SLIGHTLY MINERALIZED DIKE CUT BY MORE HEAVILY MINRALIZED SHEAR ZONE. LENGTH GIVEN IS OF DIKE

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUL-85 Andrews, David H. (Lawson, William A.) 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