Horseshoe Mine

Past Producer in Custer county in Idaho, United States with commodities Silver, Copper, Lead, Zinc, Gold
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. Ownership information
  17. Production statistics
  18. Workings at the site
  19. Links to other databases
  20. Bibliographic references
  21. Reporter information

Geologic information

Identification information

Deposit ID 10071920
MRDS ID W015691
MAS/MILS ID 160370024
Record type Site
Current site name Horseshoe Mine

Geographic coordinates

Geographic coordinates: -113.6897, 43.8978 (WGS84)
Elevation 2560
Relative position 3.75 MI WSW OF MACKAY

Site location context

Political divisions (FIPS codes)

Custer(county)

Idaho(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Mackay Reservoir(quadrangle 1:24,000 scale)

Arco(quadrangle 1:100,000 scale)

Idaho Falls(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Big Lost(hydrologic unit)

Upper Snake(hydrologic accounting unit)

Upper 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 007N 023E 35 NWSWNE Idaho

Commodities

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

Materials information

Materials Type of material
Chalcopyrite Ore
Galena Ore
Malachite Ore
Marmatite Ore
Sphalerite Ore
Pyrite Gangue
Pyrrhotite Gangue

Alteration

  • (Local) Oxidation

Analytical data

Result SOME SAMPLES HAD 0.75 OZ AG/UNIT PB
Result ANOTHER ORE BODY 14 OZ AG/TON, $2 AU/TON, 6% CU

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Granitoid > Granite
    Rock unit name Leucogranite Porphyry;Dike-Rhyolite Porphyry
    Rock description Leucogranite Porphyry;Dike-Rhyolite Porphyry
    Stratigraphic age (youngest) Pliocene
    Stratigraphic age (youngest) Paleocene
  • Host or associated Host
    Rock type Metamorphic Rock > Skarn (Tactite)
  • Host or associated Host
    Rock type Plutonic Rock > Granitoid > Granite
    Rock unit name White Knob Limestone; Skarn
    Rock description White Knob Lst;Skarn

Nearby scientific data

(1) -113.6897, 43.8978

Economic information

Ore body information

  • General form LENS, IRREGULAR
    Thickness 30.48M
    Length 30.48M
    Width 6.1M

Controls for ore emplacement

  • Shear Zone; Zone Of Skarn In Altered Limestone

Comments on the geologic information

  • Umpleby (1917) Labels Nelson and Ross' (1968) Leucogranite Porphyry As Granite Porphyry

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 Alder Creek District

Land status

Ownership category National Forest
Area name Challis National Forest

Ownership information

  • Type Operator
    Owner U.S. Mining And Smelting Co.
  • Type Owner
    Owner Taylor, Ivan

Production statistics

  • Year 1928
    Period 1916-1928
    Material ORE
    Accuracy Accurate
    Description Cp_Grade: ^100 Oz Ag/Ton, 20 % Pb, Au, Zn ( 1917 )
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Minor Ore Lead Lead 20wt-pct
    Major Ore Silver Silver 2824g/mt

Comments on the production information

  • Item 15 Production Intermittent

Workings at the site

  • Type of workings Surface/Underground
    Length 609.6M
    Overall depth 106.68M

Comments on the workings information

  • Workings Caved, 6 Levels

Reference information

Bibliographic references

  • Deposit

    Leland, G. R., 1957, General Geology And Mineralization Of The Mackay Stock Area: Moscow, Idaho, Univ. Of Idaho, M. S. Thesis, 71 P.

  • Deposit

    Ross, C. P., 1930, Geology And Ore Deposits Of The Seafoam, Alder Creek, Little Smoky And Willow Creek Mining Districts, Custer And Camas Counties, Idaho: Idaho Bureau Of Mines And Geology Pamphlet 33, 26 P.

  • Deposit

    Nelson, W. H., And Ross, C. P., 1968, Geology Of Part Of The Alder Creek Mining District, Custer County, Idaho: USGS Bulletin 1252-A, 30 P.

  • Deposit

    USBM, 1975, Activity Of Idaho Mining Properties, 1974: USBM, Boise, Idaho, 61 P.

  • Deposit

    5) Salt Lake Mining Review, 1923, Mineral Resources And Opportunities Of Custer County, Idaho: Salt Lake Mining Review, V. 25, No. 6, P. 12-15.

  • Deposit

    6) Bell, R. N., 1918, Nineteenth Annual Report Of The Mining Industry Of Idaho For The Year 1917

  • Deposit

    7) USBM, 1938-1953, Gold, Silver, Copper, Lead, And Zinc In Idaho: USBM Mineral Yearbooks For 1937-1950

  • Deposit

    1930 Geolmap Idaho Bureau Of Mines And Geology Pamphlet 33

  • Deposit

    1968 Geolmap Nelson, W. H. And Ross, C. P., Bulletin 1252-A

  • Production

    Items 8-14, Leland, G. R., 1957, Univ. Of Idaho, M. S. Thesis; Item 8 Grade, Bell, R. N., 1918, Mining Industry Report For 1917; Item 15, USBM, 1938-1953, Mineral Yearbooks For 1937-1950; Item 1, USBM, 1945, Mineral Yearbook For 1943; Item 2, USBM, 1948, Mineral Yearbook For 1946

  • Deposit

    U.S. Bureau Of Mines Open-File Report MLA 6-91, 1991, Table A-4, No. 572, P. 239.

Reporter information

Type Date Name Affiliation Comment
Reporter 1977-03-01 Siefken, Robert R. (Miller, Pat) U.S. Geological Survey
Reporter 1995-03-01 Western Field Operations Center (WFOC) U.S. Bureau of Mines

Beyond USGS

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

External references