AM_Humite Formula: (Mg6.601 Fe.399) Si3 O13 (F H) Name: Humite Unit cell: 4.7408 10.258 20.8526 90.0 90.0 90.0 , V=1014.09 Space group: PBNM (62)

Ribbe P H , Gibbs G V , American Mineralogist , 56 (1971) p.1155-1173, Crystal structures of the humite minerals: III. Mg/Fe ordering in humite and its, relation to other ferromagnesian silicates