AM_Cavansite
Formula: Ca V Si4 O15 H8
Name: Cavansite
Unit cell: 9.792 13.644 9.629 90.0 90.0 90.0 , V=1286.45
Space group: PCMN (62)

Evans H T , American Mineralogist , 58 (1973) p.412-424, The crystal structures of cavansite and pentagonite