Deerfly Prospect

Occurrence in Chelan county in Washington, United States with commodities Lead, Silver, Gold, Copper, Zinc
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. Reserves and resources
  18. Workings at the site
  19. Links to other databases
  20. Bibliographic references
  21. General comments
  22. Reporter information

Geologic information

Identification information

Deposit ID 10036778
MRDS ID M025687
Record type Site
Current site name Deerfly Prospect
Related records 10277488

Geographic coordinates

Geographic coordinates: -120.94898, 48.20815 (WGS84)
Elevation 1920
Relative position ABOUT 1 MI E OF PLUMMER MOUNTAIN

Site location context

Political divisions (FIPS codes)

Chelan(county)

Washington(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Suiattle Pass(quadrangle 1:24,000 scale)

Twisp(quadrangle 1:100,000 scale)

Concrete(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Sauk(hydrologic unit)

Puget Sound(hydrologic accounting unit)

Puget Sound(hydrologic subregion)

Pacific Northwest(hydrologic region)

Federal lands

Okanogan-Wenatchee National Forest(National Forest)

National Forest FS(Type of land area)

FS(Federal land areas administered by FS)

Glacier Peak Wilderness(Wilderness)

Wilderness FS(Type of land area)

FS(Federal land areas administered by FS)

Geographic areas

Country State County
United States Washington Chelan

Public Land Survey System information

Meridian Township Range Section Fraction State
Willamette 031N 015E 11 Washington

Comments on the location information

  • UNSURVEYED. IN SUIATTLE PASS
  • MRDS location-problem algorithm found lat/long NAD27 48-12-30N 120-56-52W disagreed with the political location of Snohmish county. Potential duplicate record 10277488 Deerfly, plots 1.1 mi to the SW, solidly in Snohmish county. However, the PLSS coords 31N 15E S11 and UTM coords, as well as the 1 mi E of Plummer Mtn. description were in agreement with the lat/long so the county name was changed to Chelan.

Commodities

Commodity Importance
Lead Primary
Silver Primary
Gold Primary
Copper Primary
Zinc Critical Primary

Materials information

Materials Type of material
Chalcopyrite Ore
Galena Ore
Pyrite Ore
Sphalerite Ore

Analytical data

Result 1 OZ/TON AU, 12-30 OZ/TON AG, 40-60% PB

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 > Granite
    Rock unit name Cloudy Pass Pluton
    Rock description Cloudy Pass Pluton
    Stratigraphic age (youngest) Miocene
    Stratigraphic age (youngest) Miocene

Nearby scientific data

(1) -120.94898, 48.20815

Economic information

Ore body information

  • General form VEIN
    Dip }
    Thickness 2.44M
    Length 304.8M
  • General form VEIN
    Dip }

Controls for ore emplacement

  • Fractures

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Deposit size Small
Significant No

Mining district

District name Sampson District

Land status

Ownership category National Wilderness
Area name In Glacier Peak Wilderness In Wenatchee National Forest

Ownership information

  • Type Operator
    Owner Deer Creek
    First year 1958

Reserves and resources

  • Type In-situ
    Estimate year 1982
    Total resources 78000mt ore
    Commodity Subtype Grade units Group Importance Year
    Silver Ag 21.176 g/mt Silver Major 1982
    Gold Au 0.141 g/mt Gold Major 1982
    Copper Cu 0.05 wt-pct Copper Major 1982

Comments on the reserve resource information

  • INDICATED AND INFERRED SUBECONOMIC RESOURCES

Workings at the site

  • Type of workings Surface/Underground
    Length 152.4M

Comments on the workings information

  • DRIFTS AND ADITS

Comments on development

  • NOT DRILLED BY BEAR CREEK BECAUSE AREA WAS PERIPHERAL TO THEIR AREA OF INTEREST

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. 233.

  • Deposit

    BROUGHTON, W.A., 1942, INVENTORY OF MINERAL PROPERTIES IN SNOHOMISH COUNTY, WASHINGTON: WASHINGTON DIVISION OF GEOLOGY REPORT OF INVESTIGATIONS 6, P. 11.

  • Deposit

    GRANT, A.R., 1982, SUMMARY OF ECONOMIC GEOLOGY DATA FOR THE GLACEIR PEAK WILDERNESS, CHELAN, SNOHOMISH, AND SKAGIT COUNTIES, WASHINGTON: U.S. GEOLOGICAL SURVEY OPEN-FILE REPORT 82-408, P. 30.

  • Deposit

    STOTELMEYER, R.B., JOHNSON, F.L., MCHUGH, E.L., FEDERSPIEL, F.E., DENTON, D.K., JR., AND STEBBINS, S.A., 1982, MINERAL INVESTIGATION OF THE GLACIER PEAK WILDERNESS AND ADJACENT AREAS, CHELAN, SKAGIT, AND SNOHOMISH COUNTIES, WASHINGTON: U.S. BUREAU OF MINES OPEN-FILE REPORT MLA 89-82, P. 16.

  • Deposit

    CHURCH, S.E., FORD, A.B., FLANIGAN, V.J., AND STOTELMEYER, R.B., 1984, MINERAL RESOURCE POTENTIAL OF THE GLACIER PEAK WILDERNESS AND ADJACENT AREAS, CHELAN, SKAGIT, AND SNOHOMISH COUNTIES, WASHINGTON: U.S. GEOLOGICAL SURVEY MISCELLANEOUS FIELD STUDIES MAP MF-1652-A, SCALE 1:100,000.

  • Reserve-Resource

    STOTELMEYER AND OTHERS, 1982

General comments

Subject category Comment text
Deposit THIS IS THOUGHT TO BE A HALO AROUND THE GLACIER PEAK DEPOSIT. PB AND ZN OCCUR IN SOME MASSIVE SULFIDE VEINS LOCALLY 18-21 IN. WIDE

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUL-1985 Andrews, David H. (Lawson, William A.) U.S. Geological Survey
Updater 01-FEB-1991 Peterson, Jocelyn A. U.S. Geological Survey
Editor 12-JUN-2008 Schruben, Paul U.S. Geological Survey Fixed lat/long-county disagreement.

Beyond USGS

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