Portersfield Prospect
UnknownCopper, Gold, Nickel, SilverUndergroundUSGS MRDS
Location
| State | Maine |
| County | Knox |
| Coordinates | 44.15685, -69.08798 |
Commodities
| Tertiary | Copper, Gold, Nickel, Silver |
Mine Details
| Status | Unknown |
| Type | Underground |
| Data Source | USGS MRDS |
| Source ID | 10169799 |