Gerstmannite Formula: Mn.786 Mg1.214 Zn Si (O6 H2) Name: Gerstmannite Unit cell: 8.185 18.65 6.256 90.0 90.0 90.0 , V=954.98 Space group: BBCM (64)
Moore P B , Araki T , American Mineralogist , 62 (1977) p.51-59, Gerstmannite, a new zinc silicate mineral and a novel cubic close-packed oxide, structure