Lost Creek Prospect

Occurrence in Snohomish county in Washington, United States with commodities Copper, Gold, Silver
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. Controls for ore emplacement
  13. Economic information about the deposit and operations
  14. Mining district
  15. Land status
  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 10036824
MRDS ID M025745
Record type Site
Current site name Lost Creek Prospect

Geographic coordinates

Geographic coordinates: -121.43704, 47.86592 (WGS84)
Elevation 1158
Location accuracy 1000(meters)
Relative position ABOUT 0.5 MI NORTHWEST OF IRON MOUNTAIN, Estimated Along Lost 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

Baring(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)

Wild Sky Wilderness(Wilderness)

Wilderness 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 028N 011E 29,31,32 Washington

Commodities

Commodity Importance
Copper Primary
Gold Primary
Silver Primary

Materials information

Materials Type of material
Bornite Ore
Chalcocite Ore
Chalcopyrite Ore
Pyrite Ore
Quartz Gangue

Analytical data

Result ASSAYED $4/TON AU, 2.8 OZ/TON 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 Associated
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite
    Rock unit name Index Batholith
    Rock description Index Batholith
    Stratigraphic age (youngest) Eocene
    Stratigraphic age (youngest) Oligocene
    Stratigraphic age (youngest) Oligocene
  • Host or associated Host
    Rock type Metamorphic Rock > Metasedimentary Rock > Quartzite
    Rock unit name Swauk Formation
    Rock description Swauk Formation

Nearby scientific data

(1) Tertiary granitic rocks

Economic information

Ore body information

  • General form DISSEMINATED
    Thickness 2.44M

Controls for ore emplacement

  • Fracturing

Comments on the geologic information

  • DEPOSIT IS NEAR CONTACT WITH INDEX BATHOLITH. GEOLOGIC MAP SHOWS AREA AS UNDERLAIN BY SEDIMENTARY ROCKS OF THE SWAUK FORMATION; QUARTZITE MAY REFER TO THESE ROCKS OR TO A SMALL SLIVER OF EASTERN MELANGE BELT METASEDIMENTARY ROCKS, ALTHOUGH THERE ARE NO LIKELY STRUCTURES SHOWN IN AREA OF PROSPECT

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Deposit size Small
Significant No

Mining district

District name Index District

Land status

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

Ownership information

  • Type Owner
    Owner E. J. Wallace, C. L. Byron
    Home office Seattle, Wa.
    First year 1912

Workings at the site

  • Type of workings Underground
    Overall depth 17.37M

Comments on the workings information

  • 3 ADITS, SHAFT

Reference information

Bibliographic references

General comments

Subject category Comment text
Deposit FRACTURE ZONE CONTAINING DISSEMINATED ORE MINERALS

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.