AM_Sodicgedrite Formula: Si5.96 Al3.4 Mg3.05 Fe2.53 Ca.04 Na.54 O24 Name: Sodicgedrite Unit cell: 18.601 17.839 5.284 90.0 90.0 90.0 , V=1753.35 Space group: PNMA (62)

Papike J J , Ross M , American Mineralogist , 55 (1970) p.1945-1972, Gedrites: Crystal structures and intracrystalline cation distributions, sample 002