| Locality | Latitude | Longitude | Distance | Bearing |
|---|
| Brighton Dam Road Quarry (Howard-Montgomery Quarry), Howard County, Maryland, USA | 39° 11' 44" N | 76° 59' 8" W | 3.1km (1.9 miles) | |
| Clarksville, Howard County, Maryland, USA | 39° 12' 22" N | 76° 56' 44" W | 3.2km (2.0 miles) | |
| Parlet Prospect, Simpsonville, Howard County, Maryland, USA | 39° 10' 17" N | 76° 54' 5" W | 4.9km (3.0 miles) | |
| Ednor Steatite Locality, Ednor, Montgomery County, Maryland, USA | 39° 8' 16" N | 76° 58' 41" W | 4.9km (3.0 miles) | |
| Earth Products Company Quarries, Montgomery County, Maryland, USA | 39° 7' 51" N | 76° 57' 20" W | 5.3km (3.3 miles) | |
| Ednor, Montgomery County, Maryland, USA | 39° 8' 10" N | 76° 59' 41" W | 5.7km (3.6 miles) | |
| Ben Murphy Mica Mine, Scaggsville, Howard County, Maryland, USA | 39° 8' 8" N | 76° 55' 0" W | 6.0km (3.7 miles) | |
| George Iager Beryl-Mica Prospects, Scaggsville, Howard County, Maryland, USA | 39° 8' 19" N | 76° 54' 41" W | 6.0km (3.7 miles) | |
| Route 29, Scaggsville, Howard County, Maryland, USA | 39° 7' 56" N | 76° 55' 8" W | 6.2km (3.8 miles) | |
| Patuxent River Bridge, Route 29, Scaggsville, Howard County, Maryland, USA | 39° 7' 57" N | 76° 55' 6" W | 6.2km (3.8 miles) | |
| Scaggsville, Howard County, Maryland, USA | 39° 8' 39" N | 76° 53' 54" W | 6.4km (4.0 miles) | |
| Melvin Quarry No. 2, Howard County, Maryland, USA | 39° 13' 41" N | 76° 55' 6" W | 6.4km (4.0 miles) | |
| Melvin Quarry No. 1, Howard County, Maryland, USA | 39° 13' 47" N | 76° 55' 10" W | 6.5km (4.1 miles) | |
| Melvin Quarry, Howard County, Maryland, USA | 39° 13' 54" N | 76° 55' 8" W | 6.8km (4.2 miles) | |
| Gudelsky Farm Prospect, Howard County, Maryland, USA | 39° 10' 51" N | 76° 52' 37" W | 6.9km (4.3 miles) | |
| Earth Products Company Mines, Montgomery County, Maryland, USA | 39° 7' 24" N | 76° 54' 47" W | 7.2km (4.5 miles) | |
| Burtonsville, Montgomery County, Maryland, USA | 39° 6' 40" N | 76° 55' 56" W | 7.8km (4.9 miles) | |
| Ellicott Gold Mine (Sandy Spring Mine; Brookeville Mine), Montgomery County, Maryland, USA | 39° 10' 43" N | 77° 2' 54" W | 7.8km (4.9 miles) | |
| Glenelg, Howard County, Maryland, USA | 39° 15' 33" N | 76° 59' 22" W | 9.3km (5.8 miles) | |
| Guilford Granite and Stone Company Quarry, Guilford, Howard County, Maryland, USA | 39° 9' 53" N | 76° 50' 39" W | 9.9km (6.1 miles) | |
| Maryland Granite Company Quarry, Guilford, Howard County, Maryland, USA | 39° 10' 2" N | 76° 50' 30" W | 10.1km (6.2 miles) | |
| Penny Quarry, Guilford, Howard County, Maryland, USA | 39° 10' 4" N | 76° 50' 28" W | 10.1km (6.3 miles) | |
| Guilford and Waltersville Granite Company Quarry, Guilford, Howard County, Maryland, USA | 39° 9' 53" N | 76° 50' 19" W | 10.4km (6.4 miles) | |
| Little Patuxent rock bank, Howard County, Maryland, USA | 39° 13' 29" N | 76° 51' 5" W | 10.5km (6.5 miles) | |
| Guilford, Howard County, Maryland, USA | 39° 10' 12" N | 76° 49' 50" W | 11.0km (6.8 miles) | |
| Savage Gabbro Quarry, Savage, Howard County, Maryland, USA | 39° 8' 22" N | 76° 50' 21" W | 11.1km (6.9 miles) | |
| Unnamed gabbro Quarry #1, Savage, Howard County, Maryland, USA | 39° 8' 39" N | 76° 50' 6" W | 11.2km (7.0 miles) | |
| Brookeville Mine (MRDS - 10100512), Montgomery County, Maryland, USA | 39° 10' 45" N | 77° 5' 20" W | 11.3km (7.0 miles) | |
| Kirwan Ore Bank, Prince Georges County, Maryland, USA | 39° 5' 2" N | 76° 53' 17" W | 12.2km (7.6 miles) | |
| Savage, Howard County, Maryland, USA | 39° 8' 16" N | 76° 49' 27" W | 12.4km (7.7 miles) | |
Ednor Steatite Locality, Ednor, Montgomery County, Maryland, USA