| Locality | Latitude | Longitude | Distance | Bearing |
|---|
| Scientists Cliffs beach alluvials, Calvert County, Maryland, USA | 38° 31' 0" N | 76° 31' 0" W | 21.4km (13.3 miles) | |
| Mackall Building Stone Quarry, Calvert County, Maryland, USA | 38° 23' 42" N | 76° 30' 3" W | 21.8km (13.6 miles) | |
| Popes Creek, Charles County, Maryland, USA | 38° 23' 54" N | 76° 59' 25" W | 22.0km (13.7 miles) | |
| Fry Quarry (Vetter Brothers; Inc.), Charles County, Maryland, USA | 38° 37' 45" N | 76° 53' 17" W | 24.2km (15.1 miles) | |
| Old Clay Deposit N. of Solomons Island, Calvert County, Maryland, USA | 38° 19' 23" N | 76° 27' 30" W | 28.2km (17.5 miles) | |
| Calvert Cliffs, Calvert County, Maryland, USA | 38° 24' 18" N | 76° 24' 36" W | 29.4km (18.3 miles) | |
| Old Greensand-Diatomaceous Earth Pit, Calvert County, Maryland, USA | 38° 42' 33" N | 76° 41' 43" W | 29.9km (18.6 miles) | |
| Cove Point Placer, Calvert County, Maryland, USA | 38° 22' 59" N | 76° 24' 0" W | 30.7km (19.1 miles) | |
| Mount Airy Farm Mine, Westmoreland County, Virginia, USA | 38° 10' 0" N | 76° 46' 57" W | 30.9km (19.2 miles) | |
| Kaylorite Corporation Greensand Pit, Calvert County, Maryland, USA | 38° 43' 17" N | 76° 41' 35" W | 31.3km (19.4 miles) | |
| Wilson Molding Sand Pit, Anne Arundel County, Maryland, USA | 38° 43' 42" N | 76° 37' 10" W | 33.6km (20.8 miles) | |
| Lyons Creek Diatomaceous Earth Deposit, Calvert County, Maryland, USA | 38° 44' 57" N | 76° 41' 4" W | 34.5km (21.4 miles) | |
| Clay Prospect, Oak Grove, Westmoreland County, Virginia, USA | 38° 12' 17" N | 77° 2' 43" W | 37.3km (23.2 miles) | |
| Fort Washington, Prince Georges County, Maryland, USA | 38° 42' 39" N | 77° 2' 3" W | 39.1km (24.3 miles) | |
| St. Mary's City, St. Mary's County, Maryland, USA | 38° 11' 14" N | 76° 26' 3" W | 39.2km (24.4 miles) | |
| Chancellor's Point, St. Mary's County, Maryland, USA | 38° 10' 6" N | 76° 26' 34" W | 40.3km (25.0 miles) | |
| Dower House Road Plant, Prince Georges County, Maryland, USA | 38° 48' 37" N | 76° 50' 44" W | 41.8km (26.0 miles) | |
| Fort Foote, Prince Georges County, Maryland, USA | 38° 46' 9" N | 77° 0' 50" W | 43.2km (26.9 miles) | |
| St. Mary's County meteorite, St. Mary's County, Maryland, USA | 38° 10' 0" N | 76° 22' 59" W | 44.0km (27.3 miles) | |
| Clay Prospect, King George, King George County, Virginia, USA | 38° 16' 34" N | 77° 13' 58" W | 46.5km (28.9 miles) | |
| Oxon Creek, Prince Georges County, Maryland, USA | 38° 48' 31" N | 77° 0' 48" W | 46.9km (29.2 miles) | |
| Unnamed Clay deposits [1], Alexandria, Virginia, USA | 38° 47' 31" N | 77° 3' 11" W | 47.2km (29.3 miles) | |
| Clay Prospect (3), Kinsale, Westmoreland County, Virginia, USA | 38° 2' 27" N | 76° 33' 12" W | 47.7km (29.6 miles) | |
| Clay Prospect (2), Kinsale, Westmoreland County, Virginia, USA | 38° 2' 5" N | 76° 34' 29" W | 47.7km (29.6 miles) | |
| Wheeler Road, Oxon Hill, Prince Georges County, Maryland, USA | 38° 49' 49" N | 76° 58' 54" W | 47.8km (29.7 miles) | |
| Clay Prospect (1), Kinsale, Westmoreland County, Virginia, USA | 38° 1' 57" N | 76° 34' 26" W | 48.0km (29.8 miles) | |
| Clay Deposit (MRDS - 10067944), Fairfax County, Virginia, USA | 38° 41' 33" N | 77° 13' 9" W | 49.8km (30.9 miles) | |
| Quantico Slate Deposits, Fairfax County, Virginia, USA | 38° 41' 29" N | 77° 14' 45" W | 51.7km (32.1 miles) | |
| Occoquan Quarry (Occoquan Quarry Nos. 1 & 2), Fairfax County, Virginia, USA | 38° 40' 55" N | 77° 15' 14" W | 51.7km (32.1 miles) | |
| Agnewville Prospect, Gold-Pyrite Belt, Prince William County, Virginia, USA | 38° 38' 37" N | 77° 17' 21" W | 52.4km (32.6 miles) | |
