Old Mass Mine
Past ProducerCopperUndergroundUSGS MRDS
Location
| State | Michigan |
| County | Ontonagon |
| Coordinates | 46.75583, -89.11285 |
Commodities
| Primary | Copper |
Mine Details
| Status | Past Producer |
| Type | Underground |
| Deposit Type | Secondary Enrichment |
| First Production | 1849 |
| Last Production | 1884 |
| Discovery Year | 1849 |
| Data Source | USGS MRDS |
| Source ID | 10080398 |