AM_Pargasite_43 Formula: Si6.072 Al2.838 Mg3.8 Fe.47 Cr.02 Ca1.8 Na.935 K.007 H2 O24 Name: Pargasite Unit cell: 9.855 17.927 5.283 90.0 105.44 90.0 , V=899.67 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: F14