AM_Hornblende_6 Formula: Si6.568 Al2.142 Mg3.7 Fe.59 Ti.04 Cr.04 Ca1.88 Na.586 K.336 H2 O24 Name: Hornblende Unit cell: 9.86 17.984 5.29 90.0 105.26 90.0 , V=904.96 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: F4