Horseshoe I

The Horseshoe I is a gold mine located in Mariposa county, California at an elevation of 2,500 feet.

About the MRDS Data:

All mine locations were obtained from the USGS Mineral Resources Data System. The locations and other information in this database have not been verified for accuracy. It should be assumed that all mines are on private property.

Mine Info

Satelite View

MRDS mine locations are often very general, and in some cases are incorrect. Some mine remains have been covered or removed by modern industrial activity or by development of things like housing. The satellite view offers a quick glimpse as to whether the MRDS location corresponds to visible mine remains.

Site Name

Primary: Horseshoe I
Secondary: Bower Cave

Commodity

Primary: Gold
Secondary: Zinc
Secondary: Silver
Secondary: Copper
Secondary: Lead

Location

State: California
County: Mariposa
District: East Belt

Land Status

Land ownership: National Forest
Note: the land ownership field only identifies whether the area the mine is in is generally on public lands like Forest Service or BLM land, or if it is in an area that is generally private property. It does not definitively identify property status, nor does it indicate claim status or whether an area is open to prospecting. Always respect private property.

Holdings

Not available

Workings

Type: Underground

Ownership

Owner Name: Joseph Dupret, Jr. And Irene Dupret

Production

Year: 1953
Material type: ORE
Description: Ap_Grade: ^1.4 Oz Au/Ton 0.3 Oz Ag/Ton

Deposit

Record Type: Site
Operation Category: Producer
Operation Type: Unknown
Discovery Year: 1867
Years of Production:
Organization:
Significant: N
Deposit Size: S

Physiography

General Physiographic Area: Pacific Mountain System
Physiographic Province: Cascade-Sierra Mountains
Physiographic Section: Sierra Nevada

Mineral Deposit Model

Not available

Orebody

Not available

Structure

Type: L
Description: Metasedimentary Cleavage Strikes Nw, Dips Sw.

Alterations

Not available

Rocks

Not available

Analytical Data

Not available

Materials

Ore: Gold
Ore: Chalcopyrite
Ore: Galena
Ore: Sphalerite
Ore: Pyrite

Comments

Comment (Location): 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 .

Comment (Production): ACTIVE INTERMITTENTLY FROM 1867 - 1913 . REOPENED IN 1951 , ACTIVE SINCE 1953 PRODUCING $13,000 FROM DEVELOPMENT WORK.

Comment (Deposit): TWO QUARTZ VEINS, NEARLY PARALLEL.

Comment (Workings): PRINCIPAL WORKINGS. CROSSCUT ADIT 200 FEET, 125 FEET DEEP, 1500 FEET OF DRIFTS, 50 FOOT WINZE ON S VEIN WITH 130 FEET OF DRIFTS.

Comment (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.

References

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

Reference (Production): BOWEN & GRAY 1957 , MAURER & WALLACE, 1956 .

Reference (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 .

Reference (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 .

Reference (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 .

California Gold

"Where to Find Gold in California" looks at the density of modern placer mining claims along with historical gold mining locations and mining district descriptions to determine areas of high gold discovery potential in California. Read more: Where to Find Gold in California.