| Deposit ID | 10102882 |
|---|---|
| MRDS ID | M009582 |
| Record type | Site |
| Current site name | Jumper |
| Alternate or previous names | Jumper & Bear |
| Geographic coordinates: | -120.1471, 37.55826 (WGS84) |
|---|---|
| Elevation | 914 |
| Relative position | ON TOP OF BEAR VALLEY MTN |
Political divisions (FIPS codes)
Mariposa(county)
California(state)
United States(country)
North America(continent)
Land(continent)
USGS map quadrangles
Hornitos(quadrangle 1:24,000 scale)
Oakdale(quadrangle 1:100,000 scale)
San Jose(quadrangle 1:250,000 scale)
Hydrologic units (watersheds)
Fresno River(hydrologic unit)
San Joaquin(hydrologic accounting unit)
San Joaquin(hydrologic subregion)
California(hydrologic region)
| Country | State | County |
|---|---|---|
| United States | California | Mariposa |
| Meridian | Township | Range | Section | Fraction | State |
|---|---|---|---|---|---|
| Mount Diablo | 004S | 017E | 30 | California |
| Commodity | Importance |
|---|---|
| Gold | Primary |
| Silver | Secondary |
| Copper | Secondary |
| Materials | Type of material |
|---|---|
| Gold | Ore |
| Quartz | Gangue |
| (1) | -120.1471, 37.55826 |
|---|
| Thickness | 1.22M |
|---|---|
| Depth to top | 0M |
| Development status | Past Producer |
|---|---|
| Commodity type | Metallic |
| Deposit size | Small |
| Significant | No |
| Discovery year | 1855 |
| Production years | 1850 - 1917 - 1937 , 1919 - 1922 , 1925 - 1928 , 1948 . |
| Type | Operator |
|---|---|
| Owner | C. H. Burt |
| First year | 1917 |
| Last year | 1940 |
| Year | 1922 | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Period | Through 1922 | ||||||||||||||
| Material | AG | ||||||||||||||
| Accuracy | Accurate | ||||||||||||||
| Description | Ap_Grade: ^1.7 Oz Ag/Ton | ||||||||||||||
| |||||||||||||||
| Year | 1922 | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Period | Through 1922 | ||||||||||||||
| Material | AU | ||||||||||||||
| Accuracy | Accurate | ||||||||||||||
| Description | Ap_Grade: ^14.4 Oz Au/Ton | ||||||||||||||
| |||||||||||||||
| Type of workings | Surface/Underground |
|---|---|
| Overall depth | 54.86M |
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| USGS | Mineral Resources Data System | MRDS | M009582 |
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 .
LAIZURE, C. MCK., 1928 , SAN FRANCISCO FIELD DIVISION IN TWENTY-FOURTH REPORT OF THE STATE MINERALOGIST: CALIFORNIA STATE MINING BUREAU. P. 91 .
ERIC, J. C., 1948 , TABULATION OF COPPER DEPOSITS OF CALIFORNIA IN COPPER IN CALIFORNIA: CALIFORNIA DIVISION OF MINES BULLETIN 144 P. 268 .
BOWEN & GRAY 1957
| Subject category | Comment text |
|---|---|
| Deposit | VEIN-TWO NEARLY FLAT, LAMINATED QUARTZ VEINS ONE ABOVE THE OTHER. A FEW INCHES TO MORE THAN 4 FEET THICK. |
| 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. |
| Deposit | Discovery Year: 1850'S |
| 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 |
Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.
These are landing pages for further research — the state agencies don't currently expose per-mine deep links.