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 = 800 C _database_code_amcsd 0000915 10.032 18.131 5.284 90 106.7 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 .279351 .916091 .985628 .003265 .000854 .011115 0.000099 0.001800 -.000125 Si2 .286891 .829825 .486654 .003490 .001003 .010967 0.000384 0.001741 0.000212 Mg1 0 .910486 .5 .004453 .001198 .013517 0 0.001825 0 Mg2 0 .819634 0 .004885 .001328 .015056 0 0.001936 0 Mg3 0 0 0 .005089 .001087 .014447 0 0.004238 0 Na 0 .723454 .5 .011438 .001648 .022841 0 -.003115 0 Ca 0 .723454 .5 .011438 .001648 .022841 0 -.003115 0 K .469233 .991334 .548098 .023289 .007652 .056224 -.006404 -.011892 0.002821 O1 .113129 .915249 .895183 .003351 .001240 .015539 0.000164 0.001421 -.000301 O2 .119610 .832196 .391848 .003880 .001597 .013276 0.000229 0.001081 -.000472 F3 .103100 0 .391519 .007067 .001670 .020922 0 0.002355 0 O4 .361824 .753412 .562946 .007952 .001247 .022929 0.001471 0.003830 0.000630 O5 .346025 .872263 .260349 .005107 .002088 .016915 0.000280 0.002489 0.002309 O6 .342653 .881909 .760649 .005756 .001980 .016465 0.000045 0.003859 -.002287 O7 .340170 0 .044083 .005911 .000785 .029764 0 0.001859 0