AM_Osumilite Formula: K.32 Na.35 Ca.12 Mg1.48 Fe1.57 Al4.95 Si9 O30 H Name: Osumilite Unit cell: 10.17 10.17 14.34 90.0 90.0 120.0 , V=1284.46 Space group: P6/MCC (192)

Miyashiro A , American Mineralogist , 41 (1956) p.104-116, Osumilite, a new silicate mineral, and its crystal structure