Holtite Kazantsev S S, Pushcharovsky D Y, Pasero M, Merlino S, Zubkova N V, Kabalov Y K ,Voloshin A V Crystallography Reports 50 (2005) 42-47 Crystal structure of holtite I Locality: Voroni Tundry deposit, Kola Peninsula, Russia _database_code_amcsd 0019739 4.695 11.906 20.38 90 90 90 Pnma atom x y z occ Uiso Al1 .4014 .75 .24989 .616 .012 Ta1 .4014 .75 .24989 .258 .012 Al2 .5576 .61046 .47309 .008 Al3 .0593 .4905 .43184 .982 .009 Al4 .0599 .3597 .29009 .937 .011 Si1 .0889 .75 .40642 .81 .015 As1 .0889 .75 .40642 .09 .015 Sb1' .1140 .75 .3853 .1 .005 Si2 .5888 .52312 .32877 .81 .0136 As2 .5888 .52312 .32877 .06 .0136 Sb2' .6092 .5636 .31676 .13 .010 B .231 .25 .4665 .012 O1 .3784 .75 .4564 .009 O2 .1569 .75 .3304 .9 .026 O3 .8928 .6389 .4551 .009 O4 .4029 .4341 .2822 .009 O5 .3957 .5509 .3944 .008 O6 .8831 .4509 .3512 .010 O7 .6593 .6331 .2886 .87 .018 O8 .1715 .25 .3493 .011 O9 .2536 .3506 .4476 .007 OH10 .7567 .25 .2739 .013 O11 .7511 .4669 .4887 .07