Zinnwaldite
Guggenheim S, Bailey S W
American Mineralogist 62 (1977) 1158-1167
The refinement of zinnwaldite-1M in subgroup symmetry
Note: the sample is from the Sadisdorf Mine dump, East Germany
_database_code_amcsd 0000604
5.296 9.140 10.096 90 100.83 90 C2
atom     x      y     z  occ B(1,1) B(2,2) B(3,3) B(1,2) B(1,3) B(2,3)
K        0  .5028     0 .900  .0181  .0048  .0054      0  .0013      0
Na       0  .5028     0 .050  .0181  .0048  .0054      0  .0013      0
Al1      0 -.0069    .5       .0067  .0009 .00236      0  .0013      0
Fe2      0  .3217    .5 .160  .0050  .0014  .0017      0  .0006      0
Ti2      0  .3217    .5 .010  .0050  .0014  .0017      0  .0006      0
Fe2      0  .3217    .5 .770  .0050  .0014  .0017      0  .0006      0
Mn2      0  .3217    .5 .050  .0050  .0014  .0017      0  .0006      0
Li6     .5  .1631    .5 .670  .0050  .0012  .0023      0      0      0
Mg6     .5  .1631    .5 .010  .0050  .0012  .0023      0      0      0
Si1  .0745  .1688 .2276 .773  .0053  .0010  .0016  .0003  .0003 -.0002
Al1  .0745  .1688 .2276 .227  .0053  .0010  .0016  .0003  .0003 -.0002
Si2  .5844  .3323 .2275 .773  .0044  .0009  .0022  .0002  .0006 -.0000
Al2  .5844  .3323 .2275 .227  .0044  .0009  .0022  .0002  .0006 -.0000
O1   .0289 -.0002 .1720       .0202  .0021  .0030  .0000  .0002 -.0002
O2   .3248  .2350 .1725       .0125  .0053  .0029 -.0031  .0019 -.0005
O22  .8177  .2641 .1597       .0117  .0046  .0031  .0028  .0010  .0007
O3   .1155  .1748 .3939       .0067  .0019  .0019  .0011  .0008 -.0001
O33  .6639  .3271 .3928       .0058  .0022  .0022  .0002  .0003  .0000
F    .1089  .4715 .3989       .0108  .0025  .0032 -.0007  .0009  .0005