AM_Masutomilite_1 Formula: (K.861 Na.072 Rb.067) Li1.27 Mn.5 Fe.12 Al1.64 Si3.34 O10.54 (F1.46 H.54) Name: Masutomilite Unit cell: 5.262 9.102 10.094 90.0 100.83 90.0 , V=474.84 Space group: C121 (5)

Mizota T , Kato T , Harada K , Mineralogical Journal , 13 (1986) p.13-21, The crystal structure of masutomilite, Mn analogue of zinnwaldite, Locality: Tanakamiyama, Ohtsu, Japan