Paranatisite
Sokolova E V, Hawthorne F C
The Canadian Mineralogist 40 (2002) 947-960
Reconsideration of the crystal structure of paranatisite and the crystal
chemistry of [M2T2_12] sheets
_database_code_amcsd 0005777
9.181 4.800 9.811 90 90 90 Pmc2_1
atom         x      y      z  Uiso U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3)
Ti(1)        0  .0342  .4594 .0057  .0001  .0090  .0079      0      0  .0010
Ti(2A)      .5  .5248  .1782  .012   .000   .012   .025      0      0  -.005
Ti(2B)      .5  .4777  .2422  .006   .004   .009   .005      0      0  .0010
Si(1)   .24961 -.0004  .2095 .0065  .0000  .0103  .0091  .0016 -.0009  .0000
Na(1)  -.24955  .4965  .4614 .0120  .0065  .0146  .0148  .0030 -.0012  .0008
Na(2)        0   .498  .2138 .0166  .0167  .0180  .0151      0      0  .0060
Na(3)       .5  .0926 -.0406 .0129  .0065  .0158  .0165      0      0  -.003
O(1)     .1461  .1443  .5934 .0119   .006   .014   .016  -.003  -.002   .003
O(2)     .6497  .7522  .2730 .0124   .007   .015   .016  -.002   .001   .002
O(3)         0 -.3202  .4622 .0128   .009   .014   .015      0      0  -.002
O(4)     .1469  .1452  .3229 .0105   .002   .017   .012   .004   .005  .0005
O(5)     .3511  .2394  .1396 .0093   .002   .009   .017  -.003   .002 -.0005
O(6)        .5 -.3533  .0112 .0145   .003   .016   .025      0      0 -.0002