Armalcolite
Wechsler B A
American Mineralogist 62 (1977) 913-920
Cation distribution and high-temperature crystal chemistry of armalcolite
sample Arm-E, T = 24 deg C, after annealing
_database_code_amcsd 0000591
9.745 10.0625 3.7422 90 90 90 Bbmm
atom      x      y z  occ B(1,1) B(2,2) B(3,3)  B(1,2) B(1,3) B(2,3)
Mg1  .80614    .25 0 .456 .00170 .00160 .01160       0      0      0
Ti1  .80614    .25 0 .088 .00170 .00160 .01160       0      0      0
Fe2  .13370 .43322 0 .022 .00137 .00140 .00770 -.00004      0      0
Mg2  .13370 .43322 0 .022 .00137 .00140 .00770 -.00004      0      0
Ti2  .13370 .43322 0 .956 .00137 .00140 .00770 -.00004      0      0
O1    .2141    .25 0       .0026  .0015  .0120       0      0      0
O2    .0455  .8866 0       .0017  .0012  .0202 -.00007      0      0
O3    .3141  .9397 0       .0017  .0024  .0045  .00006      0      0