AM_Osumilite_14 Formula: K.811 Na.052 Al2.901 Fe.113 Mg1.986 Si12 O30 Name: Osumilite Unit cell: 10.0946 10.0946 14.3311 90.0 90.0 120.0 , V=1264.70 Space group: P6/MCC (192)

Balassone G , Mormone A , Rossi M , Bernardi A , Fisch M , Armbruster T , Malsy K , Berger A , European Journal of Mineralogy , 20 (2008) p.713-720, Crystal chemical and structural characterization of an Mg-rich osumilite from, Vesuvius volcano (Italy), Locality: Vesuvius volcano, Italy