Fourth of July Mine

Past Producer in Custer county in Idaho, United States with commodities Gold, Silver, Zinc, Copper
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. Ore body information
  12. Controls for ore emplacement
  13. Economic information about the deposit and operations
  14. Mining district
  15. Land status
  16. Production statistics
  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 10105700
MRDS ID W014320
MAS/MILS ID 0160370309
Record type Site
Current site name Fourth of July Mine
Alternate or previous names 4th of July Mine, Peak

Geographic coordinates

Geographic coordinates: -114.66873, 44.37209 (WGS84)
Elevation 2743
Relative position 17 MI NE OF STANLEY 3 MI E OF BONANZA

Site location context

Political divisions (FIPS codes)

Custer(county)

Idaho(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Sunbeam(quadrangle 1:24,000 scale)

White Cloud Peaks(quadrangle 1:100,000 scale)

Challis(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Upper 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)

Geographic areas

Country State County
United States Idaho Custer

Public Land Survey System information

Meridian Township Range Section Fraction State
Boise 012N 015E 14 SW Idaho

Comments on the location information

  • SE Lucky Boy, On High Ridge Between Adair & Fourth of July Creeks

Commodities

Commodity Importance
Gold Primary
Silver Secondary
Zinc Critical Tertiary
Copper Tertiary

Materials information

Materials Type of material
Argentite Ore
Chalcopyrite Ore
Gold Ore
Sphalerite Ore
Calcite Gangue
Chalcedony Gangue
Pyrite Gangue
Quartz Gangue

Alteration

  • (Local) Silicification

Analytical data

Result ASSAY: 0.25 OZ AU/TON.

Host and associated rocks

  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Latite
    Stratigraphic age (youngest) Oligocene
    Stratigraphic age (youngest) Oligocene
    Stratigraphic age (youngest) Oligocene
  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Intermediate Volcanic Rock > Andesite
    Rock unit name Challis Volcanics-Andesite, Latite
    Rock description Challis Volcanics-Andesite, Latite
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Latite
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Intermediate Volcanic Rock > Andesite

Nearby scientific data

(1) -114.66873, 44.37209

Economic information

Ore body information

  • Strike N 70 DEG E
    Dip 85 DEG N
    Width 12.19M

Controls for ore emplacement

  • Complexly Fractured Zone

Economic information about the deposit and operations

Operation type Underground
Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No

Mining district

District name Yankee Fork District

Land status

Ownership category National Forest
Area name Challis National Forest

Production statistics

  • Year 1942
    Material ORE
    Description Ap_Grade: ^Ave. 0.9 Oz Au/Ton
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Gold Gold 28g/mt

Workings at the site

  • Type of workings Underground
    Length 179.22M

Comments on the workings information

  • 7 Adits

Reference information

Bibliographic references

  • Deposit

    Anderson, A. L., 1949, Silver - Gold Deposits Of The Yankee Fork District, Custer County, Idaho: Idaho Bureau Of Mines And Geology Pamphlet 83, 37 P

  • Production

    Anderson, A. L., 1949, Idaho Bureau Of Mines And Geology Pamphlet 83, P. 25.

  • Deposit

    U.S. Bureau Of Mines Open-File Report MLA 6-91, 1991, Table A-3, No. 453, P. 213.

General comments

Subject category Comment text
Deposit 2 Veins

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUL-1976 Siefken, Robert R. (Miller, Pat) U.S. Geological Survey
Reporter 05-NOV-1992 McHugh, Edward L. U.S. Bureau of Mines

Beyond USGS

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