Picropharmacolite crystals, a selection of specimens of this crystallized mineral species. Picropharmacolite is a mineral with many collector’s items presented here with a description, one or more photos and sometimes a video. These picropharmacolites are for sale.
It is an arsenate with the chemical formula Ca4Mg(AsO3OH)2(AsO4)2-11H2O, and the triclinic crystal system.