AM_Hornblende_9 Formula: Si6.312 Al2.318 Mg3.88 Fe.53 Ti.04 Cr.04 Ca1.84 Na.7 K.04 H2 O24 Name: Hornblende Unit cell: 9.861 17.959 5.289 90.0 105.32 90.0 , V=903.36 Space group: C12/M1 (12)

Oberti R , Hawthorne F C , Ungaretti L , Cannillo E , The Canadian Mineralogist , 33 (1995) p.867-878, [6]Al disorder in amphiboles from mantle peridotites, Sample: F8