AM_Magnesiohornblende Formula: Na.28 K.13 Fe1.63 Mg3.14 Al1.33 Ti.15 Ca1.81 Mn.02 Si6.92 H1.953 O23.953 F.047 Name: Magnesiohornblende Unit cell: 9.856 18.078 5.311 90.0 104.85 90.0 , V=914.69 Space group: C12/M1 (12)

Oberti R , Ungaretti L , Cannillo E , Hawthorne F C , Memmi I , European Journal of Mineralogy , 7 (1995) p.1049-1063, Temperature-dependent Al order-disorder in the, tetrahedral double chain of C2/m amphiboles, Sample: S(3)