AM_Guerinite
Formula:
Ca6.25 As5 O30 H20
Name:
Guerinite
Unit cell:
17.63 6.734 23.47 90.0 90.6 90.0 , V=2786.22
Space group:
P121/N1 (14)
Catti M , Ferraris G , Acta Crystallographica, Section B , 30 (1974) p.1789-1794, Crystal structure of Ca5(HAsO4)2(AsO4)2*9H2O (guerinite), Locality: synthetic