The Jumper is a gold mine located in Mariposa county, California at an elevation of 2,999 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
Elevation: 2,999 Feet (914 Meters)
Commodity: Gold
Lat, Long: 37.55833, -120.14611
Map: View on Google Maps
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.
Jumper MRDS details
Site Name
Primary: Jumper
Secondary: Jumper & Bear
Commodity
Primary: Gold
Secondary: Silver
Secondary: Copper
Location
State: California
County: Mariposa
Land Status
Not available
Holdings
Not available
Workings
Type: Surface/Underground
Ownership
Owner Name: C. H. Burt
Years: 1917 - 1940
Production
Year: 1922
Time Period: Through 1922
Material type: AG
Description: Ap_Grade: ^1.7 Oz Ag/Ton
Year: 1922
Time Period: Through 1922
Material type: AU
Description: Ap_Grade: ^14.4 Oz Au/Ton
Deposit
Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Discovery Year: 1855
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
Not available
Alterations
Not available
Rocks
Not available
Analytical Data
Not available
Materials
Ore: Gold
Gangue: Quartz
Comments
Comment (Deposit): Discovery Year: 1850'S
Comment (Commodity): GOLD IS FREE
Comment (Location): UTM ACC. N 1/2
Comment (Deposit): ORIGINALLY CONSISTED OF 2 CLAIMS, THE JUMPER AND COLD SPRINGS, OR BEAR. IN SEPTEMBER, 1954, WORKINGS WERE MOSTLY WATERED AND PARTLY FILLED WITH DEBRIS. THERE WAS A SMALL GIBSON MILL AND A STEAM ENGINE ON THE PROPERTY. MINE IS REFERRED TO IN REPORT OF STATE MINERALOGIST XXIV, P. 91-2, AND PAGE 133. P. 91 INDICATES LOCATION AS SEC. 30, 4S, 16E, AND P. 133 GIVES LOCATION AS SEC. 25, 4S, 16E. HOWEVER, THE DESCRIPTION OF THE LOCATION SHOWN IN THE 1957 REFERENCE WOULD INDICATE THAT IT IS IN SEC. 30, 4S, 17E. COPPER PRODUCTION 0-100,000 LBS. - D.O.M. BULL. 144, PT. 3, 1948, P. 268 GOLD NOT VISIBLE TO THE NAKED EYE.
Comment (Deposit): VEIN-TWO NEARLY FLAT, LAMINATED QUARTZ VEINS ONE ABOVE THE OTHER. A FEW INCHES TO MORE THAN 4 FEET THICK.
Comment (Workings): SEPT 1954 THERE WERE 3 INCLINED SHAFTS LESS THAN 100 FT APART, 2 VERTICAL SHAFTS OPEN TO AT LEAST 100 FT, 3 OTHER CAVED SHAFTS & NUMEROUS PARTLY CAVED STOPES & OPEN CUTS.
References
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 , P. 114 - 5 .
Reference (Deposit): LAIZURE, C. MCK., 1928 , SAN FRANCISCO FIELD DIVISION IN TWENTY-FOURTH REPORT OF THE STATE MINERALOGIST: CALIFORNIA STATE MINING BUREAU. P. 91 .
Reference (Deposit): ERIC, J. C., 1948 , TABULATION OF COPPER DEPOSITS OF CALIFORNIA IN COPPER IN CALIFORNIA: CALIFORNIA DIVISION OF MINES BULLETIN 144 P. 268 .
Reference (Production): BOWEN & GRAY 1957
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.
