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 = 5.0 GPa _database_code_amcsd 0003537 5.271 9.130 9.78 90 100.3 90 C2/m atom x y z occ Uiso K 0 0 0 .91 .0179 Ba 0 0 0 .03 .0179 Na 0 0 0 .02 .0179 SiT .5715 .1673 .2151 .68 .0108 AlT .5715 .1673 .2151 .32 .0108 MgM1 0 1/2 1/2 .72 .0085 FeM1 0 1/2 1/2 .28 .0085 MgM2 0 .8366 1/2 .73 .0100 FeM2 0 .8366 1/2 .27 .0100 O1 .834 .2134 .158 .021 O2 .490 0 .156 .022 O3 .629 .1675 .388 .013 O4 .128 0 .387 .05 .014 F4 .128 0 .387 .09 .014 OH4 .128 0 .387 .86 .014