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Big Horn Prospect

Occurrence in Valley county in Idaho, United States with commodities Gold, Silver, Copper
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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. Alteration
  9. Host and associated rocks
  10. Nearby scientific data
  11. Geologic structures
  12. Ore body information
  13. Controls for ore emplacement
  14. Economic information about the deposit and operations
  15. Mining district
  16. Land status
  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 10071770
MRDS ID W015318
Record type Site
Current site name Big Horn Prospect
Related records 10290828

Geographic coordinates

Geographic coordinates: -114.73204, 45.04548 (WGS84)
Elevation 1097
Relative position 4.5 MI SW OF EAGAN POINT

Site location context

Political divisions (FIPS codes)

Valley(county)

Idaho(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Puddin Mountain(quadrangle 1:24,000 scale)

Bighorn Crags(quadrangle 1:100,000 scale)

Elk City(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Lower Middle Fork Salmon(hydrologic unit)

Salmon(hydrologic accounting unit)

Lower Snake(hydrologic subregion)

Pacific Northwest(hydrologic region)

Federal lands

Salmon-Challis National Forest(National Forest)

National Forest FS(Type of land area)

FS(Federal land areas administered by FS)

Frank Church-River of No Return Wilderness(Wilderness)

Wilderness FS(Type of land area)

FS(Federal land areas administered by FS)

Geographic areas

Country State County
United States Idaho Valley

Public Land Survey System information

Meridian Township Range Section Fraction State
Boise 020N 014E 27 Idaho

Comments on the location information

  • IN CANYON OF SAMMY'S GULCH. WORKINGS EXTEND PARALLEL WITH MID FK SALMON RIVER TO POINT .5 MI TO THE S. LAND STATUS VALUE CALCULATED 7-94 USING GIS OVERLAY ANALYSIS WITH USFS LAND OWNERSHIP BOUNDARIES, 1:126,720 SCALE.

Commodities

Commodity Importance
Gold Tertiary
Silver Tertiary
Copper Tertiary

Comments on the commodity information

  • 1 SAMPLE CONTAINED 0.54 OZ AU/TON, 0.09 OZ AG/TON, 0.18% CU.

Materials information

Materials Type of material
Malachite Ore
Calcite Gangue
Hematite Gangue
Limonite Gangue
Pyrite Gangue
Quartz Gangue

Alteration

  • (Local) Gouge, Fe Stain

Analytical data

Result VEIN SAMPLES ASSAYED TRACE AU AND 0.12 TO 0.50 OZ AG/TON.

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Metasedimentary Rock > Quartzite
    Rock unit name Yellowjacket Formation-Massive Argillaceous Quartzite
    Rock description Yellowjacket Formation-Massive Argillaceous Quartzite
    Stratigraphic age (youngest) Neoproterozoic
    Stratigraphic age (youngest) Pliocene
    Stratigraphic age (youngest) Neoproterozoic

Nearby scientific data

(1) -114.73204, 45.04548
ListMap

Economic information

Geologic structures

Type of structure Local
Structure description Limonite - Hematite Boxwork

Ore body information

  • Strike N 23 DEG W
    Dip 75 DEG SW
    Thickness 0.61M
    Length 15.24M
    Width 0.91M
    Depth to bottom 3.05M

Controls for ore emplacement

  • Fault And Shear Zones

Comments on the geologic information

  • VEINS TRUNCATED AT CONTACT BETWEEN MASSIVE AND SCHISTOSE METASEDIMENTS.

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1903

Mining district

District name Middle Fork District

Land status

Ownership category National Forest
Area name Salmon National Forest
Ownership category National Primitive Area
Area name Idaho Primitive Area

Workings at the site

  • Type of workings Surface/Underground
    Length 45.72M
    Overall length 7.62M

Comments on the workings information

  • 6 ADITS, 6 CUTS

Comments on development

  • CABIN, ARRASTRA, AND SHOP ; ECON.COM: UP TO 2 FT OVERBURDEN

Reference information

Bibliographic references

  • Deposit

    CATER, F. W., AND OTHERS, 1973, MINERAL RESOURCES OF THE IDAHO PRIMITIVE AREA AND VICINITY, IDAHO: USGS BULL. 1304, 431 P

  • Deposit

    1973 RECON F. W. CATER AND OTHERS, BULL. 130

General comments

Subject category Comment text
Deposit TWO OTHER VEINS TREND N 60 DEG E, N 22 DEG E, DIP 85 DEG SE AND 47 DEG SE, RESPECTIVELY

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUL-1974 Miller, Pat J. 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