AM_Hornblende_3 Formula: (Si6.92 Al1.08) Mg3.442 Fe1.718 Ca1.7 Na.46 O24 H2 Name: Hornblende Unit cell: 9.829 18.06 5.304 90.0 104.7 90.0 , V=910.70 Space group: C12/M1 (12)

Makino K , Tomita K , American Mineralogist , 74 (1989) p.1097-1105, Cation distribution in the octahedral sites of hornblendes, sample K-H from Kawanabe, Japan