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  3. Mineral Resource Data System (MRDS)

Donkey

Occurrence in Snohomish county in Washington, United States with commodities 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. Mineral occurrence model information
  8. Host and associated rocks
  9. Nearby scientific data
  10. Geologic structures
  11. Ore body information
  12. Controls for ore emplacement
  13. Economic information about the deposit and operations
  14. Mining district
  15. Land status
  16. Reserves and resources
  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 10048589
MRDS ID MP00187
Record type Site
Current site name Donkey

Geographic coordinates

Geographic coordinates: -121.43482, 47.94064 (WGS84)
Elevation 671
Relative position ABOUT 3.25 MI SOUTH-SOUTHWEST OF MONTE CRISTO; ABOUT 0.75 MI SOUTH OF MINERAL CITY SITE

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 028N 011E 05 NW4 OF SW4 Washington

Commodities

Commodity Importance
Gold Primary
Arsenic Critical Tertiary

Analytical data

Result A FEW SAMPLES ASSAYED. MAXIMUM VALUES ARE 0.222 OZ/TON AU, 8.3% AS

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 Metamorphic Rock > Metasedimentary Rock
    Rock unit name Swauk Formation
    Rock description Swauk Formation
    Stratigraphic age (youngest) Eocene

Nearby scientific data

(1) -121.43482, 47.94064
ListMap

Economic information

Geologic structures

Type of structure Local
Structure description Faults

Ore body information

  • General form VEIN
    Strike N88W
    Dip 82NE
    Thickness 0.21M
    Length 165.51M

Controls for ore emplacement

  • Fractures

Comments on the geologic information

  • ROCKS COULD ALTERNATIVELY BE SMALL BODIES OF EASTERN MELANGE BELT ROCKS TOO SMALL TO SHOW ON GEOLOGIC MAP, BUT THERE ARE NO STRUCTURES SHOWN ON MAP TO SUGGEST THIS IS THE CASE

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

Reserves and resources

  • Type In-situ
    Estimate year 1983
    Total resources 16000mt ore
    Commodity Subtype Grade units Group Importance Year
    Gold Au 1.609 g/mt Gold Major 1983
    Arsenic As 1.67 wt-pct Arsenic Trace 1983

Workings at the site

  • Type of workings Underground
    Length 5.79M

Comments on the workings information

  • ADIT

Reference information

Bibliographic references

  • Deposit

    JOHNSON, F.L., DENTON, D.K., IVERSON, S.R., MCCULLOCH, R.B., STEBBINS, S.A., AND STOTELMEYER, R.B., 1983, MINERAL RESOURCES OF THE GLACIER PEAK RARE II AREA (NO. L6031), SNOHOMISH COUNTY, WASHINGTON: U.S. BUREAU OF MINES OPEN-FILE REPORT MLA 75-83, P. 36.

  • 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.

  • Reserve-Resource

    JOHNSON AND OTHERS, 1983

General comments

Subject category Comment text
Deposit SULFIDE-BEARING SHEAR ZONE

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAR-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