AM_Vinogradovite Formula: (Ti.93 Nb.07) Si1.75 Al.15 Be.1 Na1.27 O7.219 H3 Name: Vinogradovite Unit cell: 24.49 8.657 5.203 90.0 100.15 90.0 , V=1085.82 Space group: C12/C1 (15)

Kalsbeek N , Ronsbo J G , Zeitschrift fur Kristallographie , 200 (1992) p.237-245, Refinement of the vinogradovite structure, positioning of Be and excess Na, Locality: Ilimaussaq, Southern Greenland, Note: T = 110 K