-
ROCKBRIDGEITE
http://marylandminerals.com/wp-content/uploads/2016/08/pgduf.jpg
Greenbelt (Prince Georges County), Harvard Mineralogical Museum Collection, Jake Slagle photographer
-
"LAUBMANNITE" discredited, actually PHOSPHATE COMBINATION
http://marylandminerals.com/wp-content/uploads/2016/08/pgduflaub1copy.jpg
Greenbelt (Prince Georges County), Jake Slagle Collection, Jake Slagle photographer
-
GYPSUM (var.) SELENITE
http://marylandminerals.com/wp-content/uploads/2016/08/pgftwgypsum-copy1.jpg
Fort Washington (Prince Georges County), Jake Slagle Collection, Jake Slagle photographer
-
GYPSUM on SIDERITE
http://marylandminerals.com/wp-content/uploads/2016/08/pggypsum1.jpg
Muirkirk Iron Ore Banks (Prince Georges County), Jake Slagle Collection, Jake Slagle photographer
-
VIVIANITE
http://marylandminerals.com/wp-content/uploads/2016/08/wheelerrdviv.jpg
Wheeler Roadcut (Prince Georges County), Jake Slagle Collection, Jake Slagle photographer
-
VIVIANITE
http://marylandminerals.com/wp-content/uploads/2016/08/pgwheelerroadcutviv1.jpg
Wheeler Roadcut (Prince Georges County), Harvard Mineralogical Museum Collection, Jake Slagle photographer