Phlogopite Comodi P, Fumagalli P, Montagnoli M, Zanazzi P F American Mineralogist 89 (2004) 647-653 A single-crystal study on the pressure behavior of phlogopite and petrological implications P = 3.2 GPa _database_code_amcsd 0003536 5.291 9.160 9.90 90 100.3 90 C2/m atom x y z occ Uiso K 0 0 0 .91 .017 Ba 0 0 0 .03 .017 Na 0 0 0 .02 .017 SiT .5725 .1672 .2177 .68 .0071 AlT .5725 .1672 .2177 .32 .0071 MgM1 0 1/2 1/2 .72 .0062 FeM1 0 1/2 1/2 .28 .0062 MgM2 0 .8365 1/2 .73 .0066 FeM2 0 .8365 1/2 .27 .0066 O1 .834 .2208 .160 .017 O2 .494 0 .158 .016 O3 .630 .1670 .391 .008 O4 .126 0 .383 .05 .016 F4 .126 0 .383 .09 .016 OH4 .126 0 .383 .86 .016