Tunisite Effenberger H, Kluger F, Pertlik F, Zemann J Tschermaks Mineralogische und Petrographische Mitteilungen 28 (1981) 65-77 Tunisit: kristallstruktur und revision der chemischen formel _database_code_amcsd 0015681 11.1983 11.1983 6.5637 90 90 90 *P4/nmm .25 -.25 0 atom x y z Biso B(1,1) B(2,2) B(3,3) B(1,2) B(1,3) B(2,3) Na .25 .25 .93704 2.55 .00328 .00328 .02514 0 0 0 Ca 0 0 0 2.56 .00579 .00579 .01065 .00464 -.00604 -.00604 Al .40479 -.40479 .5 .52 .00097 .00097 .00342 .00000 -.00002 -.00002 C .25 .51396 .15653 .67 .00126 .00135 .00398 0 0 .00022 O_c3 .46093 .64970 .75908 .90 .00266 .00116 .00449 -.00014 -.00084 -.00009 O_c4 .25 .46534 .98187 1.26 .00292 .00340 .00339 0 0 -.00142 O_h1 .25 .90696 .59918 .74 .00123 .00221 .00274 0 0 -.00041 O_h2 .43878 .43878 .60715 .77 .00118 .00118 .00645 -.00014 .00009 .00009 H1 .25 .934 .720 .77 H2 .391 .391 .577 2.21 Cl .25 .25 .46863 2.46 .00201 .00201 .03084 0 0 0