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Horseshoe I

Producer in Mariposa county in California, United States with commodities Gold, Silver, Copper, Lead, Zinc
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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. Host and associated rocks
  9. Nearby scientific data
  10. Geologic structures
  11. Ore body information
  12. Economic information about the deposit and operations
  13. Mining district
  14. Land status
  15. Ownership information
  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 10106866
MRDS ID M009480
Record type Site
Current site name Horseshoe I
Alternate or previous names Bower Cave
Related records 10140094

Geographic coordinates

Geographic coordinates: -120.03599, 37.74798 (WGS84)
Elevation 762
Relative position BOWEN & GRAY ( 1957 ) STATE THE MINE IS ON SW SIDE JORDAN CREEK 3/4 MILE NW OF BOWER CAVE. THIS IS NOT COMPATIBLE WITH THE MAPPED POSITION OF BOWER CAVE.

Site location context

Political divisions (FIPS codes)

Mariposa(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Buckhorn Peak(quadrangle 1:24,000 scale)

Oakdale(quadrangle 1:100,000 scale)

San Jose(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Upper Merced(hydrologic unit)

San Joaquin(hydrologic accounting unit)

San Joaquin(hydrologic subregion)

California(hydrologic region)

Federal lands

Stanislaus 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 California Mariposa

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 002S 017E 23 California

Comments on the location information

  • UTM ACC. BASED ON BOWER CAVE, SW 1/4 NW 1/4 SEC. 19 , 2 S, 18 E, COULTERVILLE 15 MINUTE QUAD. 1947 . PROPERTY MAYBE ONE OF 3 , NE 1/4 NE 1/4 SEC 23 , 2 S 17 E JAWBONE RIDGE QUAD 1947 .

Commodities

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

Materials information

Materials Type of material
Chalcopyrite Ore
Galena Ore
Gold Ore
Pyrite Ore
Sphalerite Ore

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Metasedimentary Rock > Slate
  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Shale

Nearby scientific data

(1) -120.03599, 37.74798
ListMap

Economic information

Geologic structures

Type of structure Local
Structure description Metasedimentary Cleavage Strikes Nw, Dips Sw.

Ore body information

  • Strike N 70 E
    Dip 65 SE

Economic information about the deposit and operations

Development status Producer
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1867
Production years 1867 , 1879 - 1881 , 1904 - 1913 , 1951 - ?

Mining district

District name East Belt

Land status

Ownership category National Forest

Ownership information

  • Type Operator
    Owner Joseph Dupret, Jr. And Irene Dupret

Production statistics

  • Year 1953
    Material ORE
    Accuracy Accurate
    Description Ap_Grade: ^1.4 Oz Au/Ton 0.3 Oz Ag/Ton
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Ore Silver Silver 9g/mt
    Ore Gold Gold 44g/mt

Comments on the production information

  • ACTIVE INTERMITTENTLY FROM 1867 - 1913 . REOPENED IN 1951 , ACTIVE SINCE 1953 PRODUCING $13,000 FROM DEVELOPMENT WORK.

Workings at the site

  • Type of workings Underground
    Length 518.16M
    Overall depth 53.34M

Comments on the workings information

  • PRINCIPAL WORKINGS. CROSSCUT ADIT 200 FEET, 125 FEET DEEP, 1500 FEET OF DRIFTS, 50 FOOT WINZE ON S VEIN WITH 130 FEET OF DRIFTS.

Reference information

Bibliographic references

  • Deposit

    BOWEN, O. E., JR., GRAY, C. H., JR., 1957 , MINES AND MINERAL DEPOSITS OF MARIPOSA COUNTY, CALIFORNIA: CALIF. JOUR. MINES AND GEOLOGY, V. 53 , NOS. 1 AND 2 , PP. 112 - 113 , 270 .

  • Deposit

    WALLACE, R. E., MCLENEGAN, J. D., MATSON, E. J., 1957 , THE MINERAL INDUSTRY OF CALIFORNIA IN MINERALS YEARBOOK 1954 , VOLUME THREE, AREA REPORTS: U.S. BUREAU OF MINES, P. 220 .

  • Deposit

    MAURER, R. B., WALLACE, R. E., 1956 , THE MINERAL INDUSTRY OF CALIFORNIA IN MINERALS YEARBOOK 1953 , VOLUME 3 , AREA REPORTS: U.S. BUREAU OF MINES, P. 212 .

  • Deposit

    AUBURY, L. E., 1904 , REGISTER OF MINES AND MINERALS, MARIPOSA COUNTY CALIFORNIA: CALIFORNIA STATE MINING BUREAU, P. 11 .

  • Production

    BOWEN & GRAY 1957 , MAURER & WALLACE, 1956 .

General comments

Subject category Comment text
Deposit TWO QUARTZ VEINS, NEARLY PARALLEL.
Deposit PATENTED 20 ACRE CLAIM. SPONGE GOLD SENT TO MINT. SULFIDE CONCENTRATE SENT TO SELBY CA. SMELTER. MINE AND MILL HAND OPERATED BY THREE MEN PROCESSING SIX TONS ORE/DAY. PRESENT ACTIVITY UNKNOWN.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUN-1973 Gere, W. U.S. Geological Survey
Updater 01-JAN-1979 Bowman, J. And Albers, 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

Authoritative California resources

These are landing pages for further research — the state agencies don't currently expose per-mine deep links.