| Deposit ID | 10187583 |
|---|---|
| MRDS ID | M004877 |
| MAS/MILS ID | 0060050004 |
| Record type | Site |
| Current site name | Du Frene Prospect |
| Alternate or previous names | Pacific Mine, Empire Mine |
| Related records | 10097002 |
| Point of reference | Plant |
|---|---|
| Geographic coordinates: | -120.86962, 38.3416 (WGS84) |
| Elevation | 305 |
| Location accuracy | 500(meters) |
Political divisions (FIPS codes)
Amador(county)
California(state)
United States(country)
North America(continent)
Land(continent)
USGS map quadrangles
Jackson(quadrangle 1:24,000 scale)
San Andreas(quadrangle 1:100,000 scale)
Sacramento(quadrangle 1:250,000 scale)
Hydrologic units (watersheds)
Upper Mokelumne(hydrologic unit)
San Joaquin(hydrologic accounting unit)
San Joaquin(hydrologic subregion)
California(hydrologic region)
| Country | State | County |
|---|---|---|
| United States | California | Amador |
| Meridian | Township | Range | Section | Fraction | State |
|---|---|---|---|---|---|
| Mount Diablo | 006 N | 010 E | 27 | C SW | California |
| Commodity | Importance |
|---|---|
| Manganese Critical | Tertiary |
| Plant (1) | -120.86962, 38.3416 |
|---|
| Operation type | Surface-Underground |
|---|---|
| Development status | Prospect |
| Commodity type | Metallic |
| Significant | No |
| Discovery year | 1942 |
| Type of mineral rights | Unknown |
|---|
| Type | Owner |
|---|---|
| Owner | Fred Du Frene |
| Home office | California |
| Year | 1975 |
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| U.S. Bureau of Mines | Minerals Availability System | MAS | 0060050004 | |
| USGS | Mineral Resources Data System | MRDS | M004877 | MAS references MRDS |
CAL JOUR MINES AND GEOL V 50 NO 1 JAN 1954 P 268 PL 1
DOM BULL 152 P 28
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 22-MAY-1986 | Western Field Operations Center (WFOC) | U.S. Bureau of Mines |
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.