Nabokoite
Pertlik F, Zemann J
Mineralogy and Petrology 38 (1988) 291-298
The crystal structure of nabokoite, Cu7TeO4(SO4)5*KCl:
The first example of a Te(IV)O4 pyramid with exactly tetragonal symmetry
Locality: Mount Tolbachik, Kamchatka, USSR
_database_code_amcsd 0014618
9.833 9.833 20.5910 90 90 90 *P4/ncc
.25 -.25 0
atom     x     y     z U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3)
Cu1  .4857 .2738 .8952  .0137  .0084  .0150  .0007  .0031  -.003
Cu2    .25   .25 .6985  .0077  .0077  .0359      0      0      0
Cu3      0     0     0  .0148  .0128  .0094 -.0058  .0026 -.0009
Te1    .25  0.25 .9960  .0165  .0165  .0373      0      0      0
S1   .5681 .9937 .8525  .0115  .0101  .0133  .0012  .0016 -.0006
S2     .75   .25     0  .0132  .0132  .0005      0      0      0
O1   .4255 .9544 .8381  .0092  .0170  .0228 -.0042 -.0012 -.0087
O2   .6624 .9297 .8089  .0156  .0115  .0174  .0009  .0038 -.0023
O3   .5844 .1421 .8437  .0174  .0128  .0103  .0005  .0086 0.0028
O4   .6024 .9560 .9202  .0115  .0224  .0130  .0019 -.0018 -.0012
O5   .6545 .3294 .9601  .0183  .0170  .0134  .0010 -.0090 0.0076
O6   .3655 .3912 .9499  .0095  .0083  .0111 -.0029 -.0007 -.0005
K      .75   .25   .75  .0923  .0923  .0127 -.0802      0      0
Cl     .25   .25 .8225  .0233  .0233  .0084      0      0      0