Sevenmile Antimony

Occurrence in Chelan county in Washington, United States with commodities Gold, Silver, Nickel, Antimony
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. Geologic structures
  13. Ore body information
  14. Economic information about the deposit and operations
  15. Mining district
  16. Land status
  17. Ownership information
  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 10048608
MRDS ID MP00205
Record type Site
Current site name Sevenmile Antimony
Alternate or previous names Sevenmile Creek

Geographic coordinates

Geographic coordinates: -120.70563, 48.18649 (WGS84)
Elevation 975
Location accuracy 1000(meters)
Relative position ABOUT 2.75 MI SOUTH-SOUTHEAST OF RIDDLE PEAKS, Estimated From Map In Church And Others. Location Given Is 200 Ft Higher Than Reported Elevation

Site location context

Political divisions (FIPS codes)

Chelan(county)

Washington(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Pinnacle Mountain(quadrangle 1:24,000 scale)

Twisp(quadrangle 1:100,000 scale)

Concrete(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Lake Chelan(hydrologic unit)

Upper Columbia(hydrologic accounting unit)

Upper Columbia(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 017E 15 SE4 Washington

Comments on the location information

  • NEAR WILDERNESS BOUNDARY. UNSURVEYED.

Commodities

Commodity Importance
Gold Primary
Silver Primary
Nickel Critical Tertiary
Antimony Critical Tertiary

Comments on the commodity information

  • GREEN NI STAINS PRESENT

Materials information

Materials Type of material
Pyrite Ore
Stibnite Ore

Alteration

  • (Local) Silicification

Analytical data

Result SEVERAL SAMPLES ASSAYED. MAXIMUM VALUES ARE 2.72% SB, 1% NI, 0.01 OZ/TON AU, 0.4 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 Host
    Rock type Plutonic Rock > Granitoid > Granite
    Stratigraphic age (youngest) Pliocene

Nearby scientific data

(1) -120.70563, 48.18649

Economic information

Geologic structures

Type of structure Local
Structure description Breccia Zone

Ore body information

  • General form VEIN
    Thickness 3.66M
    Length 15.24M

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Deposit size Small
Significant No

Mining district

District name Railroad Creek District

Land status

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

Ownership information

  • Type Operator
    Owner Oscar Getty, Lucerne
    First year 1952

Workings at the site

  • Type of workings Underground
    Length 30.48M

Comments on the workings information

  • ADIT

Reference information

Bibliographic references

  • Deposit

    STOTELMEYER, R.B., JOHNSON, F.L., MCHUGH, E.L., FEDERSPEIL, 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 98-82, P. 20.

  • Deposit

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

General comments

Subject category Comment text
Deposit PRESENCE OF NI IS NOT CHARACTERISTIC FOR POLYMETALLIC VEINS AND GRANITIC HOST ROCK IS NOT TYPICAL FOR MAGMATIC DEPOSITS OR MASSIVE SULFIDE DEPOSITS CONTAINING NI. 2 VEINS

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAR-92 Peterson, Jocelyn A. U.S. Geological Survey

Beyond USGS

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