AM_Olenite_12 Formula: Na.77 Al8.88 Si3.78 B5.22 O31 Name: Olenite Unit cell: 15.5996 15.5996 7.0224 90.0 90.0 120.0 , V=1479.94 Space group: R3M (160)

Marler B , Borowski M , Wodara U , Schreyer W , European Journal of Mineralogy , 14 (2002) p.763-771, Synthetic tourmaline (olenite) with excess boron replacing silicon in the, tetrahedral site: II. Structure analysis, Sample: 1