Norrishite
Tyrna P L, Guggenheim S
American Mineralogist 76 (1991) 266-271
The crystal structure of norrishite, KLiMn2Si4O12: An oxygen-rich mica
_database_code_amcsd 0001348
5.289 8.914 10.062 90 98.22 90 C2/m
atom     x     y     z B(1,1) B(2,2) B(3,3) B(1,2) B(1,3) B(2,3)
K        0    .5     0  0.017 0.0050 0.0077      0 0.0020      0
Li1      0     0    .5  0.009  0.004  0.004      0  0.002      0
Mn2      0 .3472    .5  .0039 0.0011 0.0038      0 0.0011      0
Si   .0629 .1707 .2270  .0044 0.0012 0.0040 0.0000 0.0008 0.0000
O1    .045     0  .167  0.010 0.0019  0.005      0  0.001      0
O2    .297 .2486 .1615  0.007 0.0040 0.0041 -.0025 0.0006 0.0001
O3    .108 .1787 .3853  0.005 0.0014 0.0044 0.0002 0.0015 -.0002
O4    .109    .5  .396  0.009 0.0015  0.005      0  0.002      0