| Locality | Latitude | Longitude | Distance | Bearing |
|---|
| King of Prussia, Upper Merion Township, Montgomery County, Pennsylvania, USA | 40° 5' 47" N | 75° 22' 56" W | 1.4km (0.9 miles) | |
| Henderson Station, Upper Merion Township, Montgomery County, Pennsylvania, USA | 40° 5' 10" N | 75° 21' 27" W | 3.3km (2.0 miles) | |
| Limestone quarry, Upper Merion Township, Montgomery County, Pennsylvania, USA | 40° 5' 40" N | 75° 21' 18" W | 3.5km (2.2 miles) | |
| Bridgeport, Bridgeport Borough, Montgomery County, Pennsylvania, USA | 40° 6' 17" N | 75° 20' 44" W | 4.6km (2.9 miles) | |
| Audubon, Lower Providence Township, Montgomery County, Pennsylvania, USA | 40° 7' 40" N | 75° 25' 54" W | 5.3km (3.3 miles) | |
| Ecton Mine, Perkiomen Mines, Audubon, Lower Providence Township, Montgomery County, Pennsylvania, USA | 40° 7' 33" N | 75° 26' 33" W | 5.7km (3.5 miles) | |
| Whim shaft, Perkiomen Mines, Audubon, Lower Providence Township, Montgomery County, Pennsylvania, USA | 40° 7' 50" N | 75° 26' 20" W | 5.9km (3.7 miles) | |
| Perkiomen Copper Mine, Perkiomen Mines, Audubon, Lower Providence Township, Montgomery County, Pennsylvania, USA | 40° 7' 58" N | 75° 26' 16" W | 6.0km (3.7 miles) | |
| Bullock Quarry (Geo. Bullock Quarry; George Bullock Quarry), West Conshohocken, Montgomery County, Pennsylvania, USA | 40° 4' 33" N | 75° 19' 22" W | 6.4km (4.0 miles) | |
| Gill Quarry, East Norriton Township, Montgomery County, Pennsylvania, USA | 40° 10' 10" N | 75° 21' 3" W | 9.7km (6.0 miles) | |
| Collegeville Amethyst Locality, Collegeville, Upper Providence Township, Montgomery County, Pennsylvania, USA | 40° 9' 45" N | 75° 27' 54" W | 10.0km (6.2 miles) | |
| Pennypacker Mine, Charlestown Township, Chester County, Pennsylvania, USA | 40° 5' 14" N | 75° 31' 0" W | 10.3km (6.4 miles) | |
| Wheatley Mines, Schuylkill Township, Chester County, Pennsylvania, USA | 40° 6' 20" N | 75° 31' 0" W | 10.4km (6.5 miles) | |
| Morris Mine, Schuylkill Township, Chester County, Pennsylvania, USA | 40° 7' 21" N | 75° 30' 42" W | 10.5km (6.5 miles) | |
| Chester County Mine, Schuylkill Township, Chester County, Pennsylvania, USA | 40° 6' 21" N | 75° 31' 5" W | 10.5km (6.6 miles) | |
| Brookdale Mine, Schuylkill Township, Chester County, Pennsylvania, USA | 40° 6' 3" N | 75° 31' 14" W | 10.7km (6.6 miles) | |
| Southwest Chester County Mine (New Chester County Mine), Schuylkill Township, Chester County, Pennsylvania, USA | 40° 6' 15" N | 75° 31' 18" W | 10.8km (6.7 miles) | |
| Phoenix Mine, Charlestown Township, Chester County, Pennsylvania, USA | 40° 5' 50" N | 75° 31' 24" W | 10.9km (6.8 miles) | |
| Montgomery Mine, Schuylkill Township, Chester County, Pennsylvania, USA | 40° 6' 17" N | 75° 31' 32" W | 11.2km (6.9 miles) | |
| Gladwyne, Lower Merion Township, Montgomery County, Pennsylvania, USA | 40° 2' 26" N | 75° 16' 45" W | 11.3km (7.0 miles) | |
| Lafayette Station, Philadelphia County, Pennsylvania, USA | 40° 3' 30" N | 75° 15' 59" W | 11.5km (7.2 miles) | |
| Miquon (Miquon Station; Lafayette; Lafayette Station), Whitemarsh Township, Montgomery County, Pennsylvania, USA | 40° 3' 36" N | 75° 15' 55" W | 11.6km (7.2 miles) | |
| Rose's Quarry, Gladwyne, Lower Merion Township, Montgomery County, Pennsylvania, USA | 40° 2' 57" N | 75° 16' 10" W | 11.6km (7.2 miles) | |
| Malvern, Malvern Borough, Chester County, Pennsylvania, USA | 40° 2' 10" N | 75° 30' 50" W | 11.6km (7.2 miles) | |
| Lafayette (opposite Lafayette), Lower Merion Township, Montgomery County, Pennsylvania, USA | 40° 3' 9" N | 75° 15' 57" W | 11.8km (7.3 miles) | |
| Valley Store, East Whiteland Township, Chester County, Pennsylvania, USA | 40° 3' 7" N | 75° 31' 35" W | 11.8km (7.4 miles) | |
| Gladwyne Quarries, Gladwyne, Lower Merion Township, Montgomery County, Pennsylvania, USA | 40° 3' 6" N | 75° 15' 55" W | 11.9km (7.4 miles) | |
| Charleston Mine, Charlestown Township, Chester County, Pennsylvania, USA | 40° 6' 29" N | 75° 32' 0" W | 11.9km (7.4 miles) | |
| Phoenixville tunnel (Conrail tunnel; Black Rock tunnel), Phoenixville, Schuylkill Township, Chester County, Pennsylvania, USA | 40° 8' 44" N | 75° 30' 56" W | 11.9km (7.4 miles) | |
| Prince's Soapstone Quarry, Lafayette Station, Philadelphia County, Pennsylvania, USA | 40° 3' 15" N | 75° 15' 47" W | 11.9km (7.4 miles) | |
Ecton Mine, Perkiomen Mines, Audubon, Lower Providence Township, Montgomery County, Pennsylvania, USA