AM_Uvite_9 Formula: Ca.43 Na.4 Mg2.49 Al6.45 Cr.06 Si6 B3 H3 O31 Name: Uvite Unit cell: 15.917 15.917 7.189 90.0 90.0 120.0 , V=1577.33 Space group: R3M (160)

Taylor M C , Cooper M A , Hawthorne F C , The Canadian Mineralogist , 33 (1995) p.1215-1221, Local charge-compensation in hydroxyl-deficient uvite