AM_Protolithionite_1 Formula: (K.92 Na.03 Rb.04 Ca.01) Fe1.59 Mn.03 Li.37 Al1.71 Si2.97 O10.94 (F1.06 H.94) Name: Protolithionite Unit cell: 5.309 5.309 29.818 90.0 90.0 120.0 , V=727.84 Space group: P3112 (151)

Weiss Z , Rieder M , Smrcok L , Petricek V , Bailey S W , European Journal of Mineralogy , 5 (1993) p.493-502, Refinement of the crystal structures of two protolithionites , Sample : 3T, Note: x-coordinate of M3 changed in order to obey symmetry constraints