Black Wonder Sec.28 Group.
Past ProducerSurfaceUSGS MRDS
Location
| State | California |
| County | Santa Clara |
| Coordinates | 37.38162, -121.43132 |
Commodities
| Tertiary | Manganese, Silica |
Mine Details
| Status | Past Producer |
| Type | Surface |
| First Production | 1941 |
| Discovery Year | 1940 |
| Data Source | USGS MRDS |
| Source ID | 10287050 |