| Deposit ID | 10164623 |
|---|---|
| MAS/MILS ID | 0060550041 |
| Record type | Site |
| Current site name | Lewis |
| Point of reference | Main Entrance |
|---|---|
| Geographic coordinates: | -122.32186, 38.61349 (WGS84) |
| Elevation | 183 |
| Location accuracy | 1000(meters) |
Political divisions (FIPS codes)
Napa(county)
California(state)
United States(country)
North America(continent)
Land(continent)
USGS map quadrangles
Chiles Valley(quadrangle 1:24,000 scale)
Healdsburg(quadrangle 1:100,000 scale)
Santa Rosa(quadrangle 1:250,000 scale)
Hydrologic units (watersheds)
Lower Sacramento(hydrologic accounting unit)
Sacramento(hydrologic subregion)
California(hydrologic region)
Federal lands
USBR(Federal land areas administered by USBR)
| Country | State | County |
|---|---|---|
| United States | California | Napa |
| Meridian | Township | Range | Section | Fraction | State |
|---|---|---|---|---|---|
| Mount Diablo | 009 N | 004 W | 20 | SE | California |
| Commodity | Importance |
|---|---|
| Manganese Critical | Primary |
| Main Entrance (1) | -122.32186, 38.61349 |
|---|
| Operation type | Surface-Underground |
|---|---|
| Development status | Occurrence |
| Commodity type | Metallic |
| Significant | No |
| Ownership category | Unknown |
|---|
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| U.S. Bureau of Mines | Minerals Availability System | MAS | 0060550041 |
CALIF BULL 125, 1943, P 145; BULL 152, 1950, P 158
CHERT CONTAINS LESS THAN 1% MANGANESE
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 04-NOV-1983 | 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.