Fluorophlogopite Hazen R M, Finger L W American Mineralogist 63 (1978) 293-296 The crystal structures and compressibilities of layer minerals at high pressure. II. Phlogopite and chlorite P = 35 kbar, sample is from Franklin, New Jersey, USA _database_code_amcsd 0000628 5.260 9.100 9.791 90 100.68 90 C2/m atom x y z occ Biso Si .573 .1663 .212 .738 1.0 Al .573 .1663 .212 .262 1.0 Mg1 0 .5 .5 .2 Mg2 0 .8316 .5 .3 K 0 0 0 .76 1.2 Na 0 0 0 .16 1.2 Ba 0 0 0 .05 1.2 O1 .821 .225 .156 1.3 O2 .498 0 .156 1.3 O3 .649 .166 .393 .6 F .124 0 .393 .65 .8 OH .124 0 .393 .35 .8