Fluoro-richterite Cameron M, Sueno S, Papike J J, Prewitt C T American Mineralogist 68 (1983) 924-943 High temperature crystal chemistry of K and Na fluor-richterites Note: sample Na, T = 900 C _database_code_amcsd 0000916 10.043 18.149 5.286 90 106.69 90 I2/m atom x y z B(1,1) B(2,2) B(3,3) B(1,2) B(1,3) B(2,3) Si1 .279395 .916186 .985718 .003798 .001085 .013080 0.000107 0.003004 -.000159 Si2 .287005 .829880 .487442 .004195 .001203 .012679 0.000259 0.003161 0.000012 Mg1 0 .910418 .5 .005453 .001459 .015312 0 0.003529 0 Mg2 0 .819395 0 .005538 .001519 .017567 0 0.003290 0 Mg3 0 0 0 .005572 .001311 .017792 0 0.005865 0 Na 0 .723460 .5 .013004 .001921 .025278 0 -.001699 0 Ca 0 .723460 .5 .013004 .001921 .025278 0 -.001699 0 K .467104 .988723 .552547 .025343 .008954 .063307 -.002776 -.013009 -.000704 O1 .112887 .915169 .895422 .004713 .001447 .016057 -.000037 0.004119 -.000078 O2 .119569 .832030 .391908 .004427 .001863 .016393 0.000175 0.002257 -.000281 F3 .102901 0 .392338 .007932 .001803 .026652 0 0.003935 0 O4 .362509 .753329 .565022 .008848 .001465 .026455 0.001275 0.006289 0.000093 O5 .346180 .872464 .262337 .005742 .002315 .018274 0.000142 0.003459 0.002516 O6 .342153 .881366 .760241 .006715 .002239 .017956 0.000121 0.004468 -.002203 O7 .340252 0 .041793 .006706 .000982 .034537 0 0.002717 0