| Locality | Latitude | Longitude | Distance | Bearing |
|---|
| Weber Quarry, Anamosa, Jones County, Iowa, USA | 42° 6' 30" N | 91° 16' 59" W | 16.5km (10.2 miles) | |
| Anamosa, Jones County, Iowa, USA | 42° 6' 30" N | 91° 17' 6" W | 16.6km (10.3 miles) | |
| James Brown Mine (W. D. Sheehan Mine), Jones County, Iowa, USA | 42° 5' 6" N | 91° 15' 27" W | 18.0km (11.2 miles) | |
| Anamosa Mine, Jones County, Iowa, USA | 42° 5' 2" N | 91° 15' 41" W | 18.2km (11.3 miles) | |
| Occurrence (MRDS 10082020), Jones County, Iowa, USA | 42° 8' 11" N | 90° 58' 33" W | 20.8km (12.9 miles) | |
| George Huber Farm, Delaware County, Iowa, USA | 42° 23' 21" N | 91° 21' 2" W | 21.5km (13.4 miles) | |
| Dyersville Diggings, Delaware County, Iowa, USA | 42° 25' 54" N | 91° 8' 41" W | 21.8km (13.5 miles) | |
| Dyersville Diggings, Dubuque County, Iowa, USA | 42° 26' 3" N | 91° 7' 18" W | 22.4km (13.9 miles) | |
| Delhi area, Delaware County, Iowa, USA | 42° 25' 46" N | 91° 19' 50" W | 24.3km (15.1 miles) | |
| Canton area, Jackson County, Iowa, USA | 42° 9' 48" N | 90° 53' 44" W | 25.4km (15.8 miles) | |
| Gillespie Farm Diggings, Jackson County, Iowa, USA | 42° 12' 6" N | 90° 52' 12" W | 26.4km (16.4 miles) | |
| Mineral Creek Diggings, Jackson County, Iowa, USA | 42° 8' 16" N | 90° 53' 4" W | 27.3km (17.0 miles) | |
| Central City, Linn County, Iowa, USA | 42° 12' 13" N | 91° 31' 26" W | 28.0km (17.4 miles) | |
| Baldwin Mines, Jackson County, Iowa, USA | 42° 3' 46" N | 90° 53' 31" W | 31.2km (19.4 miles) | |
| Unnamed Lead Prospect, Dubuque County, Iowa, USA | 42° 18' 14" N | 90° 48' 37" W | 31.8km (19.8 miles) | |
| Lytle Creek Diggings, Jackson County, Iowa, USA | 42° 16' 12" N | 90° 47' 12" W | 33.1km (20.6 miles) | |
| Main Baldwin Diggings, Jackson County, Iowa, USA | 42° 4' 44" N | 90° 50' 27" W | 33.6km (20.9 miles) | |
| Manchester area, Delaware County, Iowa, USA | 42° 29' 15" N | 91° 27' 28" W | 35.5km (22.1 miles) | |
| Roadcut (MRDS 10100308), Dubuque County, Iowa, USA | 42° 29' 37" N | 90° 52' 20" W | 38.4km (23.9 miles) | |
| Graf, Dubuque County, Iowa, USA | 42° 29' 35" N | 90° 52' 16" W | 38.4km (23.9 miles) | |
| Table Mound Township, Dubuque County, Iowa, USA | 42° 25' 20" N | 90° 45' 55" W | 40.2km (25.0 miles) | |
| Roadcut (MRDS 10082056), Dubuque County, Iowa, USA | 42° 30' 30" N | 90° 51' 35" W | 40.3km (25.0 miles) | |
| Zwingle Mines and Occurrences, Jackson County, Iowa, USA | 42° 17' 45" N | 90° 41' 22" W | 41.4km (25.7 miles) | |
| Zwingle Mines, Zwingle, Dubuque County, Iowa, USA | 42° 17' 45" N | 90° 41' 22" W | 41.4km (25.7 miles) | |
| Zwingle, Dubuque County, Iowa, USA | 42° 17' 49" N | 90° 41' 14" W | 41.6km (25.9 miles) | |
| Twin Spings quarry, Twin Springs, Dubuque County, Iowa, USA | 42° 31' 13" N | 90° 50' 59" W | 41.8km (26.0 miles) | |
| Twin Springs, Dubuque County, Iowa, USA | 42° 30' 55" N | 90° 50' 25" W | 41.9km (26.1 miles) | |
| Massillon, Cedar County, Iowa, USA | 41° 54' 53" N | 90° 55' 21" W | 42.1km (26.1 miles) | |
| Robins quarry, Robins, Linn County, Iowa, USA | 42° 4' 45" N | 91° 39' 33" W | 42.8km (26.6 miles) | |
| Robins, Linn County, Iowa, USA | 42° 4' 15" N | 91° 40' 0" W | 43.7km (27.2 miles) | |
