AM_Ringwoodite_10 Formula: Si Mg1.738 Fe.216 O4 Name: Ringwoodite Unit cell: 8.0904 8.0904 8.0904 90.0 90.0 90.0 , V=529.55 Space group: FD3M (227)

Smyth J R , Holl C M , Frost D J , Jacobsen S D , Langenhorst F , McCammon C A , American Mineralogist , 88 (2003) p.1402-1407, Structural systematics of hydrous ringwoodite and water in Earth s interior, Sample: SZ0002