| Deposit ID | 10040642 |
|---|---|
| MRDS ID | M055494 |
| Record type | Site |
| Current site name | Mount Diablo Mine |
| Alternate or previous names | Ryne, Bagley Creek |
| Related records | 10138061 |
| Geographic coordinates: | -121.8791, 37.90157 (WGS84) |
|---|---|
| Elevation | 290 |
| Relative position | 30 MI NE OF SAN FRANCISCO; ON EASTERN SIDE OF THE NORTH PEAK OF MT. DIABLO |
Political divisions (FIPS codes)
Contra Costa(county)
California(state)
United States(country)
North America(continent)
Land(continent)
USGS map quadrangles
Clayton(quadrangle 1:24,000 scale)
Stockton(quadrangle 1:100,000 scale)
San Jose(quadrangle 1:250,000 scale)
Hydrologic units (watersheds)
San Joaquin Delta(hydrologic unit)
San Joaquin(hydrologic accounting unit)
San Joaquin(hydrologic subregion)
California(hydrologic region)
| Country | State | County |
|---|---|---|
| United States | California | Contra Costa |
| Meridian | Township | Range | Section | Fraction | State |
|---|---|---|---|---|---|
| Mount Diablo | 001N | 001E | 29 | California |
| Commodity | Importance |
|---|---|
| Mercury | Primary |
| Materials | Type of material |
|---|---|
| Cinnabar | Ore |
| Metacinnabar | Ore |
| Calcite | Gangue |
| Chalcedony | Gangue |
| Chromite | Gangue |
| Dolomite | Gangue |
| Marcasite | Gangue |
| Opal | Gangue |
| Pyrite | Gangue |
| Quartz | Gangue |
| Stibnite | Gangue |
| Host or associated | Associated | ||||
|---|---|---|---|---|---|
| Rock type | Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Rhyolite | ||||
| |||||
| Host or associated | Host |
|---|---|
| Rock type | Metamorphic Rock > Serpentinite |
| Rock unit name | Franciscan Complex |
| Rock description | Franciscan Complex |
| (1) | -121.8791, 37.90157 |
|---|
| General form | IRREGULAR, TABULAR |
|---|---|
| Dip | N50E |
| Thickness | 1.83M |
| Length | 39.62M |
| Width | 60.96M |
| Development status | Past Producer |
|---|---|
| Commodity type | Metallic |
| Deposit size | Medium |
| Significant | No |
| Discovery year | 1863 |
| Discoverer | Mr. Welch |
| Year of first production | 1875 |
| District name | Mount Diablo |
|---|
| Type | Operator |
|---|---|
| Owner | Nevada Scheelite Co. |
| First year | 1956 |
| Type | Owner |
|---|---|
| Owner | Guadelupe Mining Co. |
| Year | 1962 | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Period | To 1962 | ||||||||||||||
| Material | HG | ||||||||||||||
| Accuracy | Estimate | ||||||||||||||
| Description | Cp_Grade: ^6 Lb/Ton | ||||||||||||||
| |||||||||||||||
| Type of workings | Surface/Underground |
|---|---|
| Length | 1219.2M |
| Overall depth | 152.4M |
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| USGS | Mineral Resources Data System | MRDS | M055494 |
BAILEY, E. H., USGS, PERSONAL FILES.
HOLMES, G. W., JR., 1965, MERCURY IN CALIFORNIA: IN USBM IC 8252.
ROSS, C. P., 1940, QUICKSILVER DEPOSITS OF THE MOUNT DIABLO DISTRICT, CONTRA COSTA COUNTY, CALIFORNIA: USGS BULL. 922 - B.
DAVIS, F.F. AND GOLDMAN, H.B., 1958, MINES AND MINERAL RESOURCES OF CONTRA COSTA COUNTY, CALIFORNIA: CJMG V. 54, P. 530-535
1955 DIREXPL DMEA UNSUCCESSFUL IN DISCOVERING NEW OR
USBM DATA
| Subject category | Comment text |
|---|---|
| Deposit | INDIANS USED THE CINNABAR IN TRIBAL CEREMONIES. LATER WAS MINED AS A PLACER ; INFO.SRC : BAILEY E H |
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 01-JAN-1976 | Gassaway, J. S. | 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.