AM_Kalsilite Formula: K Al Si O4 Name: Kalsilite Unit cell: 5.157 5.157 8.706 90.0 90.0 120.0 , V=200.51 Space group: P31C (159)

Cellai D , Bonazzi P , Carpenter M A , American Mineralogist , 82 (1997) p.276-279, Natural kalsilite, KAlSiO4, with P31c symmetry: Crystal structure and twinning