Staurolite Oberti R, Hawthorne F C, Zanetti A, Ottolini L The Canadian Mineralogist 34 (1996) 1051-1057 Crystal-structure refinement of a highly ordered staurolite _database_code_amcsd 0005514 7.877 16.609 5.665 90 90.68 90 C2/m atom x y z occ Biso SiT1 .13379 .16615 .24544 .30 FeT2 .38950 0 .23730 .34 .64 ZnT2 .38950 0 .23730 .6 .64 MgT2 .38950 0 .23730 .06 .64 Al1a .5 .17458 0 .91 .21 Mg1a .5 .17458 0 .09 .21 Al1b .5 .17502 .5 .91 .30 Mg1b .5 .17502 .5 .09 .30 Al2 .26292 .41040 .25527 .97 .38 Mg2 .26292 .41040 .25527 .02 .38 Ti2 .26292 .41040 .25527 .01 .38 Al3a 0 0 0 .44 .42 Mg3a 0 0 0 .06 .42 Al3b 0 0 .5 .44 1.69 Mg3b 0 0 .5 .06 1.69 FeM4 .5 0 0 .01 .87 O1a .23322 0 .95742 .57 O1b .23857 0 .52372 .52 O2a .25648 .16152 .01521 .41 O2b .25231 .16101 .48307 .47 O3 .00126 .08935 .23690 .47 O4 .02272 .24946 .24778 .49 O5 .52685 .09893 .24905 .43