AM_Pargasite_3 Formula: O22 F2 (Si6 Al2) Mg4.762 Ga.238 Ca2 Na Name: Pargasite Unit cell: 9.86 17.9685 5.3027 90.0 105.198 90.0 , V=906.62 Space group: C12/M1 (12)

Raudsepp M , Turnock A C , Hawthorne F C , Sherriff B L , Hartman J S , American Mineralogist , 72 (1987) p.580-593, Characterization of synthetic pargasitic amphiboles