Hopper Prospect
OccurrenceUSGS MRDS
Location
| State | California |
| County | Mendocino |
| Coordinates | 39.32407, -123.08469 |
Commodities
| Tertiary | Manganese |
Mine Details
| Status | Occurrence |
| Discovery Year | 1917 |
| Data Source | USGS MRDS |
| Source ID | 10115543 |
| State | California |
| County | Mendocino |
| Coordinates | 39.32407, -123.08469 |
| Tertiary | Manganese |
| Status | Occurrence |
| Discovery Year | 1917 |
| Data Source | USGS MRDS |
| Source ID | 10115543 |