AM_Greenalite Formula: Fe1.71 Mg.645 Al1.305 Si1.34 O9 H4 Name: Greenalite Unit cell: 5.39 9.336 14.166 90.0 90.0 90.0 , V=712.85 Space group: C12/M1 (12)

Shirozu H , Bailey S W , American Mineralogist , 50 (1965) p.868-885, Chlorite polytypism: III. Crystal structure of an orthohexagonal iron chlorite