AM_Pargasite_11 Formula: O24 Si6.88 Al1.72 Mg4.56 Ca1.84 Na.58 Name: Pargasite Unit cell: 9.8466 17.99 5.2793 90.0 105.099 90.0 , V=902.89 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 20-2