AM_Hornblende_2 Formula: Al2.42 Si6.44 Fe1.852 Mg2.218 Ti.07 Ca1.83 Na.706 O24 H1.34 Name: Hornblende Unit cell: 9.786 18.024 5.306 90.0 105.09 90.0 , V=903.62 Space group: C12/M1 (12)

Phillips M W , Draheim J E , Popp R K , Clowe C A , Pinkerton A A , American Mineralogist , 74 (1989) p.764-773, Effects of oxidation-dehydrogenation in tschermakitic hornblende, sample H-3, after annealing at 700 C