AM_Pargasite_7
Formula: (Si5.96 Al2.04) Mg3.83 Fe1.31 Ca1.86 Na2.28 O24 H2
Name: Pargasite
Unit cell: 9.834 18.01 5.297 90.0 105.04 90.0 , V=906.02
Space group: C12/M1 (12)

Makino K , Tomita K , American Mineralogist , 74 (1989) p.1097-1105, Cation distribution in the octahedral sites of hornblendes, sample P-P from Parau Island