Trimounsite-(Y)
Kolitsch U
European Journal of Mineralogy 13 (2001) 761-768
The crystal structure of trimounsite-(Y), (Y,REE)2Ti2SiO9:
an unusual TiO6-based titanate chain
_database_code_amcsd 0006894
12.293 11.124 4.8610 90 95.69 90 P2_1/c
atom       x      y       z  occ   Uiso U(1,1) U(2,2) U(3,3)  U(1,2) U(1,3) U(2,3)
Y1    .57800 .86180 -.01444 .764 .01328  .0134  .0131 .01321  .00001 .00079 .00025
Er1   .57800 .86180 -.01444 .236 .01328  .0134  .0131 .01321  .00001 .00079 .00025
Y2   -.06934 .85876  .05361 .770 .01330  .0134  .0131 .01335 -.00008 .00094 .00042
Er2  -.06934 .85876  .05361 .230 .01330  .0134  .0131 .01335 -.00008 .00094 .00042
Ti1   .36059 .66364 -.16513      .01331  .0133  .0147  .0118   .0005  .0009 -.0001
Ti2   .15006 .66317  .19889      .01313  .0134  .0140  .0121  -.0002  .0013  .0004
Si    .75231 .90568  -.4286       .0139  .0136  .0140  .0140   .0000  .0011 -.0002
O1     .6441  .6640  -.0623       .0160  .0139  .0172  .0166   .0017  .0001  .0003
O2    -.1350  .6593   .0050       .0174  .0166  .0173  .0185  -.0014  .0027 -.0004
O3     .7536  .9015  -.0938       .0162  .0154  .0201  .0128  -.0008  .0001  .0016
O4    .25439  .5509   .0211       .0150  .0168  .0129  .0161  -.0011  .0055 -.0024
O5     .4379  .5484  -.3026       .0164  .0165  .0159  .0172  -.0007  .0027 -.0019
O6     .4472  .7116   .1675       .0143  .0153  .0152  .0123   .0025  .0008 -.0008
O7    .25539  .7923   .0171       .0144  .0148  .0161  .0119  -.0005 -.0007 -.0003
O8     .0665  .5523   .3276       .0166  .0178  .0146  .0176   .0014  .0025  .0020
O9     .0645  .7106  -.1338       .0147  .0151  .0164  .0126  -.0020  .0010  .0006