| Locality | Latitude | Longitude | Distance | Bearing |
|---|
| Portage Mine (Grand Portage Mine), Houghton, Houghton County, Michigan, USA | 47° 6' 56" N | 88° 34' 1" W | 0.1km (0.1 miles) | |
| Sheldon-Columbian Mine, Houghton, Houghton County, Michigan, USA | 47° 6' 59" N | 88° 33' 50" W | 0.2km (0.1 miles) | |
| Columbian Mine (Albion Mine), Sheldon-Columbian Mine, Houghton, Houghton County, Michigan, USA | 47° 6' 59" N | 88° 33' 50" W | 0.2km (0.1 miles) | |
| Sheldon Mine, Sheldon-Columbian Mine, Houghton, Houghton County, Michigan, USA | 47° 6' 59" N | 88° 33' 50" W | 0.2km (0.1 miles) | |
| Isle Royal No. 1 shaft, Isle Royal Mines, Houghton, Houghton County, Michigan, USA | 47° 6' 47" N | 88° 33' 56" W | 0.4km (0.3 miles) | |
| Hurontown, Portage Township, Houghton County, Michigan, USA | 47° 6' 39" N | 88° 34' 24" W | 0.8km (0.5 miles) | |
| Unnamed Copper Prospect (MRDS - 10291201), Houghton, Houghton County, Michigan, USA | 47° 6' 39" N | 88° 33' 24" W | 1.0km (0.6 miles) | |
| Quincy Smelter, Ripley, Franklin Township, Houghton County, Michigan, USA | 47° 7' 31" N | 88° 33' 50" W | 1.0km (0.6 miles) | |
| Isle Royal No. 2 shaft, Isle Royal Mines, Portage Township, Houghton County, Michigan, USA | 47° 6' 27" N | 88° 34' 14" W | 1.1km (0.7 miles) | |
| Mabbs Mine, Houghton, Houghton County, Michigan, USA | 47° 6' 38" N | 88° 33' 8" W | 1.3km (0.8 miles) | |
| Ripley, Franklin Township, Houghton County, Michigan, USA | 47° 7' 36" N | 88° 33' 12" W | 1.5km (0.9 miles) | |
| Michigan Tech University Experimental Mine (East Adit), Quincy Mine, Quincy Township, Houghton County, Michigan, USA | 47° 7' 50" N | 88° 34' 26" W | 1.6km (1.0 miles) | |
| Huron Creek occurrences, Houghton, Houghton County, Michigan, USA | 47° 6' 38" N | 88° 35' 13" W | 1.7km (1.1 miles) | |
| Ripley Exploration Prospect, Ripley, Franklin Township, Houghton County, Michigan, USA | 47° 7' 44" N | 88° 33' 6" W | 1.8km (1.1 miles) | |
| Huron Mine (Houghton Mine), Houghton, Houghton County, Michigan, USA | 47° 6' 17" N | 88° 35' 12" W | 2.0km (1.2 miles) | |
| Unnamed pits, Hancock, Houghton County, Michigan, USA | 47° 7' 40" N | 88° 35' 15" W | 2.0km (1.2 miles) | |
| Hancock Mine, Hancock, Houghton County, Michigan, USA | 47° 7' 44" N | 88° 35' 25" W | 2.2km (1.4 miles) | |
| Quincy Mine, Quincy Township, Houghton County, Michigan, USA | 47° 8' 11" N | 88° 34' 30" W | 2.3km (1.4 miles) | |
| Old Quincy Mine No. 2, Quincy Mine, Quincy Township, Houghton County, Michigan, USA | 47° 8' 12" N | 88° 34' 30" W | 2.3km (1.4 miles) | |
| Unnamed Copper Prospect (MRDS - 10146519), Houghton, Houghton County, Michigan, USA | 47° 6' 50" N | 88° 35' 49" W | 2.3km (1.4 miles) | |
| Isle Royal Mines, Portage Township, Houghton County, Michigan, USA | 47° 5' 50" N | 88° 34' 48" W | 2.4km (1.5 miles) | |
| Isle Royal No. 4 shaft, Isle Royal Mines, Portage Township, Houghton County, Michigan, USA | 47° 5' 50" N | 88° 34' 50" W | 2.4km (1.5 miles) | |
| Pewabic, Franklin Township, Houghton County, Michigan, USA | 47° 8' 17" N | 88° 34' 0" W | 2.4km (1.5 miles) | |
| Old Quincy Mine No. 1, Quincy Mine, Quincy Township, Houghton County, Michigan, USA | 47° 8' 16" N | 88° 34' 27" W | 2.4km (1.5 miles) | |
| Naumkeag Mine, Houghton, Houghton County, Michigan, USA | 47° 6' 42" N | 88° 35' 53" W | 2.4km (1.5 miles) | |
| Pewabic Mine, Pewabic, Franklin Township, Houghton County, Michigan, USA | 47° 8' 27" N | 88° 34' 14" W | 2.7km (1.7 miles) | |
| Dodgeville, Portage Township, Houghton County, Michigan, USA | 47° 5' 38" N | 88° 34' 52" W | 2.7km (1.7 miles) | |
| Franklin Mine, Franklin Township, Houghton County, Michigan, USA | 47° 8' 31" N | 88° 34' 23" W | 2.9km (1.8 miles) | |
| Isle Royal No. 5 shaft, Isle Royal Mines, Portage Township, Houghton County, Michigan, USA | 47° 5' 39" N | 88° 35' 11" W | 2.9km (1.8 miles) | |
| Franklin Mine, Franklin Mine, Franklin Township, Houghton County, Michigan, USA | 47° 8' 36" N | 88° 34' 4" W | 3.0km (1.9 miles) | |
Old Quincy Mine No. 1, Quincy Mine, Quincy Township, Houghton County, Michigan, USA