AM_Melilite_7 Formula: (Ca.83 Sr.45 Na.72) Mg.2 Fe.29 Mn.03 Zn.01 Al.46 Ti.02 Si1.99 O7 Name: Melilite Unit cell: 7.764 7.764 5.095 90.0 90.0 90.0 , V=307.13 Space group: P-421M (113)

Bindi L , Bonazzi P , Fitton J G , European Journal of Mineralogy , 13 (2001) p.121-125, Crystal chemistry of strontian soda melilite from nephelinite, lave of Mt. Etinde, Cameroon, Sample: ET2, Locality: nephelinite lava of Mt. Etinde, Cameroon