| Locality | Latitude | Longitude | Distance | Bearing |
|---|
| Aspen hill, Montgomery County, Maryland, USA | 39° 4' 44" N | 77° 4' 24" W | 0.1km (0.0 miles) | |
| Halpine Crushed-schist Quarry, Montgomery County, Maryland, USA | 39° 4' 6" N | 77° 6' 28" W | 3.2km (2.0 miles) | |
| Wheaton, Montgomery County, Maryland, USA | 39° 2' 22" N | 77° 3' 19" W | 4.7km (2.9 miles) | |
| Riggs Quarry, Garrett Park, Montgomery County, Maryland, USA | 39° 1' 59" N | 77° 4' 59" W | 5.2km (3.2 miles) | |
| Garrett Park, Montgomery County, Maryland, USA | 39° 2' 4" N | 77° 5' 42" W | 5.4km (3.3 miles) | |
| Kensington Mica Mine (Gilmore Mine; B. H. Warner Mine), Wheaton, Montgomery County, Maryland, USA | 39° 3' 24" N | 77° 0' 47" W | 5.8km (3.6 miles) | |
| Rockville, Montgomery County, Maryland, USA | 39° 4' 53" N | 77° 8' 46" W | 6.3km (3.9 miles) | |
| Lamberton Branch locality, Silver Spring, Montgomery County, Maryland, USA | 39° 2' 49" N | 77° 0' 37" W | 6.5km (4.0 miles) | |
| Rock Creek, Montgomery County, Maryland, USA | 39° 1' 17" N | 77° 5' 55" W | 6.8km (4.2 miles) | |
| Huddlestone Mine, Rockville, Montgomery County, Maryland, USA | 39° 2' 14" N | 77° 8' 29" W | 7.5km (4.7 miles) | |
| Bogley Mine, Rockville, Montgomery County, Maryland, USA | 39° 3' 54" N | 77° 10' 17" W | 8.6km (5.4 miles) | |
| White Oak, Montgomery County, Maryland, USA | 39° 2' 57" N | 76° 58' 49" W | 8.7km (5.4 miles) | |
| Paint Branch, Silver Spring, Montgomery County, Maryland, USA | 39° 3' 6" N | 76° 58' 43" W | 8.7km (5.4 miles) | |
| Ednor, Montgomery County, Maryland, USA | 39° 8' 10" N | 76° 59' 41" W | 9.2km (5.7 miles) | |
| Ayrlawn park, Bethesda, Montgomery County, Maryland, USA | 39° 0' 13" N | 77° 7' 8" W | 9.3km (5.8 miles) | |
| Silver Spring, Montgomery County, Maryland, USA | 38° 59' 44" N | 77° 1' 44" W | 10.1km (6.3 miles) | |
| B Giancola Quarry, Montgomery County, Maryland, USA | 39° 0' 46" N | 77° 9' 11" W | 10.2km (6.3 miles) | |
| Bethesda Mine (Miller Mine), Bethesda, Montgomery County, Maryland, USA | 38° 59' 48" N | 77° 7' 38" W | 10.3km (6.4 miles) | |
| Ednor Steatite Locality, Ednor, Montgomery County, Maryland, USA | 39° 8' 16" N | 76° 58' 41" W | 10.4km (6.5 miles) | |
| Stonyhurst Quarries, Montgomery County, Maryland, USA | 39° 0' 38" N | 77° 9' 29" W | 10.6km (6.6 miles) | |
| Bethesda, Montgomery County, Maryland, USA | 38° 59' 6" N | 77° 5' 42" W | 10.7km (6.6 miles) | |
| Brookeville Mine (MRDS - 10100512), Montgomery County, Maryland, USA | 39° 10' 45" N | 77° 5' 20" W | 11.2km (6.9 miles) | |
| Ellicott Gold Mine (Sandy Spring Mine; Brookeville Mine), Montgomery County, Maryland, USA | 39° 10' 43" N | 77° 2' 54" W | 11.2km (7.0 miles) | |
| Unnamed schist quarry, Potomac, Montgomery County, Maryland, USA | 39° 0' 15" N | 77° 10' 0" W | 11.6km (7.2 miles) | |
| Earth Products Company Quarries, Montgomery County, Maryland, USA | 39° 7' 51" N | 76° 57' 20" W | 11.6km (7.2 miles) | |
| Stoneyhurst Quarry Number 3, Montgomery County, Maryland, USA | 38° 59' 32" N | 77° 9' 37" W | 12.3km (7.6 miles) | |
| Bingham branch, Rock Creek Park, NW Washington, District of Columbia (Washington D.C.), USA | 38° 58' 13" N | 77° 3' 2" W | 12.3km (7.6 miles) | |
| Cabin John Creek, Montgomery County, Maryland, USA | 38° 59' 20" N | 77° 9' 33" W | 12.5km (7.8 miles) | |
| Toms Run Quarry, Montgomery County, Maryland, USA | 38° 59' 43" N | 77° 10' 9" W | 12.5km (7.8 miles) | |
| Stoneyhurst Quarry Number 1, Montgomery County, Maryland, USA | 38° 59' 25" N | 77° 9' 42" W | 12.6km (7.8 miles) | |
Ednor Steatite Locality, Ednor, Montgomery County, Maryland, USA