Phengite Smyth J R, Jacobsen S D, Swope R J, Angel R J, Arlt T, Domanik K, Holloway J R European Journal of Mineralogy 12 (2000) 955-963 Crystal structures and compressibilities of synthetic 2M_1 and 3T phengite micas Sample: synthetic 3T _database_code_amcsd 0006845 5.2110 5.2110 29.689 90 90 120 P3_112 atom x y z occ Uiso U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3) K .1239 .2477 1/6 .0347 .0280 .038 .0413 .0191 -.0018 0 AlM2 -.1975 -.09875 0 .403 .0124 .0122 .0122 .0128 .0061 0 -.0006 MgM2 -.1975 -.09875 0 .25 .0124 .0122 .0122 .0128 .0061 0 -.0006 FeM2 -.1975 -.09875 0 .013 .0124 .0122 .0122 .0128 .0061 0 -.0006 AlM3 .4550 .2275 0 .403 .0175 .015 .0131 .025 .0075 0 .001 MgM3 .4550 .2275 0 .25 .0175 .015 .0131 .025 .0075 0 .001 FeM3 .4550 .2275 0 .013 .0175 .015 .0131 .025 .0075 0 .001 SiT1 .7900 .5815 .0903 .952 .0159 .0182 .0219 .0069 .0106 -.0012 .0005 AlT1 .7900 .5815 .0903 .048 .0159 .0182 .0219 .0069 .0106 -.0012 .0005 SiT2 .4714 .9221 .0900 .952 .0115 .0014 .0014 .029 -.0011 -.0011 -.0009 AlT2 .4714 .9221 .0900 .048 .0115 .0014 .0014 .029 -.0011 -.0011 -.0009 O1 .7564 .5698 .0361 .016 .008 .008 .022 -.004 .001 .001 O2 .4973 .9267 .0367 .019 .018 .011 .018 -.001 -.000 .005 O3 .6411 .7568 .1129 .021 .016 .028 .026 .016 -.002 -.003 O4 .1273 .7350 .1092 .017 .015 .015 .021 -.011 .001 .001 O5 .616 .252 .1124 .025 .042 .030 .021 .032 -.002 -.001 Oh6 .133 .198 .0363 .6 .024 .032 .029 .023 .022 -.002 -.003 F6 .133 .198 .0363 .4 .024 .032 .029 .023 .022 -.002 -.003 H .076 .280 .039 .6 .03