AM_Pargasite_12 Formula: O24 Si7.2 Al1.2 Mg4.92 Ca1.68 Na.43 Name: Pargasite Unit cell: 9.8184 18.021 5.278 90.0 104.829 90.0 , V=902.77 Space group: C12/M1 (12)

Sharma A , Jenkins D M , American Mineralogist , 84 (1999) p.1304-1318, Hydrothermal synthesis of amphiboles along the tremolite-pargasite join, and in the ternary system tremolite-pargasite-cummingtonite, Sample: PARG 21-2