AM_Tremolite_17 Formula: Na.15 K.04 Fe1.4 Mg3.65 Al.83 Ca1.67 Mn.03 Si7.38 H1.973 O23.973 F.027 Name: Tremolite Unit cell: 9.81 18.091 5.294 90.0 104.58 90.0 , V=909.28 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(1)