| Deposit ID | 10038060 |
|---|---|
| MRDS ID | M045331 |
| Record type | Site |
| Current site name | Douglas Flat |
| Related records | 10284514 |
| Geographic coordinates: | -120.45711, 38.12185 (WGS84) |
|---|---|
| Elevation | 655 |
| Relative position | 5 MI NORTHEAST OF ANGELS CAMP, 5 MI SOUTH OF MURPHYS |
Political divisions (FIPS codes)
Calaveras(county)
California(state)
United States(country)
North America(continent)
Land(continent)
USGS map quadrangles
Columbia(quadrangle 1:24,000 scale)
San Andreas(quadrangle 1:100,000 scale)
Sacramento(quadrangle 1:250,000 scale)
Hydrologic units (watersheds)
Upper Stanislaus(hydrologic unit)
San Joaquin(hydrologic accounting unit)
San Joaquin(hydrologic subregion)
California(hydrologic region)
| Country | State | County |
|---|---|---|
| United States | California | Calaveras |
| Meridian | Township | Range | Section | Fraction | State |
|---|---|---|---|---|---|
| Mount Diablo | 003N | 014E | 08 | NEAR SOUTH BORDER | California |
| Commodity | Importance |
|---|---|
| Gold | Primary |
| Platinum Critical | Secondary |
| Materials | Type of material |
|---|---|
| Gold | Ore |
| Hematite | Ore |
| Magnetite | Ore |
| Result | CONCENTRATE YIELDED $807.78/TON AU (0.032 OZ/TON, 1.1 PPM), $10.50/TON PT (0.00029 OZ/TON, 10 PPB), CONCENTRATED FROM 60 TONS TO 100 LB |
|---|
| Model code | 119 |
|---|---|
| USGS model code | 39a |
| Deposit model name | Placer Au-PGE |
| Mark3 model number | 54 |
| Host or associated | Host | ||
|---|---|---|---|
| Rock type | Unconsolidated Deposit > Gravel | ||
| Rock unit name | Ione Formation | ||
| Rock description | Ione Formation | ||
| |||
| (1) | -120.45711, 38.12185 |
|---|
| General form | STREAM SEDIMENT DEPOSITS |
|---|
| Development status | Producer |
|---|---|
| Commodity type | Metallic |
| Deposit size | Small |
| Significant | No |
| Discovery year | 1848 |
| District name | Vallecito District |
|---|
| Type | Operator |
|---|---|
| Owner | Vallecito Western Mining Co. |
| First year | 1923 |
| Type | Owner |
|---|---|
| Owner | T. B. Bishop Co. |
| First year | 1962 |
| Type of workings | Surface/Underground |
|---|---|
| Length | 1615.44M |
| Overall depth | 58.52M |
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| USGS | Mineral Resources Data System | MRDS | M045331 |
CLARK, W.B., 1970, GOLD DISTRICTS OF CALIFORNIA: CALIFORNIA DIVISION OF MINES AND GEOLOGY BULLETIN 193, P. 126.
CLARK, W.B., AND LYDON, P.A., 1962, MINES AND MINERAL RESOURCES OF CALAVERAS COUNTY, CALIFORNIA: CALIFORNIA DIVISION OF MINES AND GEOLOGY COUNTY REPORT 2, P. 208.
| Subject category | Comment text |
|---|---|
| Deposit | GRAVELS ARE RICHEST NEAR BEDROCK |
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 01-DEC-1974 | Blair, Will N. | U.S. Geological Survey | |
| Updater | 01-FEB-1989 | Peterson, Jocelyn A. | 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.