Vinogradovite
Kalsbeek N, Ronsbo J G
Zeitschrift fur Kristallographie 200 (1992) 237-245
Refinement of the vinogradovite structure, positioning of Be and excess Na
Locality: Ilimaussaq, Southern Greenland
Note: T = 295 K
_database_code_amcsd 0011019
24.50 8.662 5.211 90 100.13 90 C2/c
atom      x      y      z  occ Biso B(1,1) B(2,2) B(3,3)  B(1,2)  B(1,3)  B(2,3)
Ti   .34958 .40339 .21224  .93      .00025 .00172 .00447  .00002  .00015  .00024
Nb   .34958 .40339 .21224  .07      .00025 .00172 .00447  .00002  .00015  .00024
Si1  .76689 .40836  .7250           .00024 .00156 .00323  .00004  .00014  .00000
Si2  .43556 .89957  .7228  .75      .00028 .00193 .00579 -.00006  .00022 -.00016
Al2  .43556 .89957  .7228  .15      .00028 .00193 .00579 -.00006  .00022 -.00016
Be2  .43556 .89957  .7228   .1      .00028 .00193 .00579 -.00006  .00022 -.00016
Na1  .64873  .1887  .7952           .00088 .00453 .00893  .00031 -.00026  .00090
O1       .5  .8441    .75           .00037 .00393 .01748       0  .00046       0
O2   .42093  .9631  .0002           .00057 .00396 .01235 -.00018  .00086 -.00241
O3   .79183  .5111  .9850           .00030 .00283 .00475  .00001  .00022 -.00112
O4   .61535  .5679  .4532           .00030 .00273 .00475  .00016  .00008 -.00039
O5   .79248  .2396  .7808           .00037 .00199 .00646  .00029  .00022  .00033
O6   .70004  .4181  .6660           .00023 .00223 .00475  .00002 -.00006 -.00039
O7   .39563  .7507  .6247           .00043 .00306 .00826 -.00031  .00036 -.00005
Wat1      0   .141    .25 .348  2.5
Wat2  .0076   .910   .646 .549      .00154 .04498 .04560 -.00311  .00181 -.00731
Na2   .4655  .4005   .973  .27  3.5