AM_Labuntsovite-Mn_1 Formula: Ti8.22 Nb.5 Si16 K4.61 Na2.736 O64.836 H18 Name: Labuntsovite-Mn Unit cell: 14.18 15.48 13.7 90.0 90.0 117.0 , V=2679.47 Space group: B112/M (12)

Golovastikov N I , Soviet Physics Crystallography , 18 (1973) p.950-955, Crystal structure of the alkali titanosilicate labuntsovite, Sample: double cell