Formula: Si3 Al3 O14.25 Na3.58 Ca.04 K.15 C.5 H6
Name: Cancrinite
Unit cell: 12.688 12.688 5.189 90.0 90.0 120.0 , V=723.44
Space group: P63 (173)

Rozenberg K A , Rastsvetaeva R K , Chukanov N V , Crystallography Reports , 54 (2009) p.793-799, Crystal structures of oxalate-bearing cancrinite with an unusual, arrangement of CO3 groups and sulfate-rich davyne, Locality: Kovdor massif, Kola Peninsula, Russia, Note: Bruker SMART CCD diffractometer