AM_Leonhardite Formula: K.795 Na.62 Ca1.276 (Si7.928 Al4.072) O31 H4.534 Name: Leonhardite Unit cell: 14.556 13.206 7.513 90.0 110.75 90.0 , V=1350.52 Space group: P12/A1 (13)

Baur W H , Joswig W , Fursenko B A , Belitsky I A , European Journal of Mineralogy , 9 (1997) p.1173-1182, Symmetry reduction of the aluminosilicate framework of LAU topology, by ordering of exchangeable cations: the crystal structure of primary leonhardite, with a primitive Bravais lattice