Isle Royale Amygdaloid
Past ProducerCopperUndergroundUSGS MRDS
Location
| State | Michigan |
| County | Houghton |
| Coordinates | 47.09778, -88.58033 |
Commodities
| Primary | Copper |
| Secondary | Silver |
Mine Details
| Status | Past Producer |
| Type | Underground |
| Deposit Type | Fissures, Secondary Enrichment |
| First Production | 1852 |
| Last Production | 1968 |
| Data Source | USGS MRDS |
| Source ID | 10082608 |