AM_Cahnite
Formula: As B Ca2 O8
Name: Cahnite
Unit cell: 7.11 7.11 6.2 90.0 90.0 90.0 , V=313.42
Space group: I1-41 (1)

Prewitt C T , Buerger M J , American Mineralogist , 46 (1961) p.1077-1085, The crystal structure of cahnite, Ca2BAsO4(OH)4