Holtite Groat L A, Grew E S, Evans R J, Pieczka A, Ercit T S Mineralogical Magazine 73 (2009) 1033-1050 The crystal chemistry of holtite Sample: H2 Locality: Greenbushes tinfield, Bridgetown-Greenbushes Shire, Australia _database_code_amcsd 0019926 4.6981 11.926 20.413 90 90 90 Pnma atom x y z occ Uiso Al1 .40077 .75 .25027 .56 .01530 Ta1 .40077 .75 .25027 .23 .01530 Al2 .55782 .61049 .47333 .995 .0053 Al3 .05953 .49028 .43151 .99 .0049 Al4 .0602 .35952 .29005 .930 .0073 Si1 .0862 .75 .40839 .884 .0050 Sb1 .1103 .75 .3865 .056 .0103 As1 .1103 .75 .3865 .060 .0103 Si2 .5871 .52053 .32979 .883 .0054 Sb2 .6086 .5589 .31747 .077 .0093 As2 .6086 .5589 .31747 .039 .0093 B .2274 .25 .4155 .0066 O1 .3774 .75 .45674 .0063 O2 .1613 .75 .33048 .884 .0106 O3 .8943 .63880 .42516 .0062 O4 .4035 .43452 .28251 .0073 O5 .3944 .54984 .39427 .0063 O6 .8807 .45119 .35208 .0070 O7 .6586 .6333 .28880 .883 .0108 O8 .1726 .25 .34990 .0087 O9 .2537 .35049 .44776 .0068 O10 .7576 .25 .27364 .0102 O11 .7500 .46710 .48826 .0052