Baryte (Meisselspat)
orthorhombic dipyramidal
this crystal shows 12 faces

pinacoid {010}		d = 0.8	2 faces
pinacoid {001}		d = 1.500	2 faces
orthorhombic prism {130}		d = 1.06	4 faces
orthorhombic prism {140}		d = 0.95	4 faces

unit cell :  a = 8.87  b = 5.45  c = 7.14