Topaz Alberico A, Ferrando S, Ivaldi G, Ferraris G European Journal of Mineralogy 15 (2003) 875-881 X-ray single-crystal structure refinement of an OH-rich topaz from Sulu UHP terrane (Eastern China) - Structural foundation of the correlation between cell parameters and fluorine content Locality: Sulu UHP terrane, Eastern China _database_code_amcsd 0007017 4.6696 8.8486 8.3915 90 90 90 Pbnm atom x y z occ Uiso U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3) Al .90543 .13126 .08148 .00543 .00555 .00531 .00544 .00012 -.00009 -.00012 Si .40000 .94092 1/4 .00471 .00465 .00482 .00467 .00017 0 0 O1 .79373 .53096 1/4 .00619 .00546 .00702 .00610 .00087 0 0 O2 .45186 .75634 1/4 .00619 .00705 .00482 .00668 .00063 0 0 O3 .78824 .01025 .90720 .00607 .00588 .00641 .00590 .00101 -.00124 .00010 F .90221 .75257 .05998 .70 .00823 .00779 .00843 .00846 -.00190 .00054 .00087 O .90221 .75257 .05998 .30 .00823 .00779 .00843 .00846 -.00190 .00054 .00087 H .96 .76 .15 .30