Tschernichite
Alberti A, Cruciani G, Galli E, Merlino S, Millini R, Quartieri S, Vezzalini G, Zanardi S
Journal of Physical Chemistry B106 (2002) 10277-10284
Crystal structure of tetragonal and monoclinic polytypes of tschernichite,
the natural counterpart of synthetic zeolite beta
Locality: Mt. Adamson, Northern Victoria Land, Antarctica
Sample: large crystal, monoclinic
17.983 17.966 14.625 90 114.31 90 C2/c
atom      x     y     z  occ Uiso
Na1   .1438 .3576 .0005  .09 .039
K1    .1438 .3576 .0005 .023 .039
Mg1   .1438 .3576 .0005 .023 .039
Ca1   .1438 .3576 .0005  .44 .039
Ca2    .305  .521 -.004 .073  .03
Ca3    .474  .696  .004 .079  .03
Si1   .1708 .8334 .8880  .68 .014
Al1   .1708 .8334 .8880  .32 .014
Si2   .2070 .5437 .1145  .79 .017
Al2   .2070 .5437 .1145  .21 .017
Si3   .1924 .4185 .2512  .73 .016
Al3   .1924 .4185 .2512  .27 .016
Si4   .3940 .0186 .6136  .68 .018
Al4   .3940 .0186 .6136  .32 .018
Si5   .5201 .1450 .6140  .73 .018
Al5   .5201 .1450 .6140  .27 .018
Si6      .5 .2743   .75  .78 .014
Al6      .5 .2743   .75  .22 .014
Si7   .2971 .2926 .3892  .75 .014
Al7   .2971 .2926 .3892  .25 .014
Si8   .4193 .1693 .3862  .74 .016
Al8   .4193 .1693 .3862  .26 .016
Si9      .5 .1116   .25  .69 .016
Al9      .5 .1116   .25  .31 .016
O1    .2077 .9163 .8753      .032
O2    .5784 .3306 .8014      .034
O3    .2246 .7652 .8738      .033
O4    .6681 .3329 .9996      .027
O5    .2337 .4827 .2040      .032
O6    .1451 .6024 .1324      .039
O7    .1650 .5016 .0076      .026
O8    .1672 .4554 .3359      .039
O9    .2655 .3563 .3029      .041
O10   .1153 .3825 .1592      .037
O11   .4629 .0805 .6252      .047
O12   .0637 .5621 .3419      .045
O13   .5106 .2245 .6639      .041
O14   .4987 .1623 .4944      .018
O15   .3748 .2513 .3779      .032
O16   .4506 .1689 .2959      .030
Wat1   .156  .224 -.114  .58  .12
Wat2   .118  .254 -.111  .45  .09
Wat3   .286  .347  .117  .41  .07
Wat4   .242  .378 -.108  .62  .11
Wat5   .396  .427  .126  .17  .18
Wat6   .478  .641 -.165  .26  .09
Wat7   .013  .140  .025  .56  .14
Wat8   .011  .021 -.019  .40  .04
Wat9   .145  .011  .007  .61  .14
Wat10  .091  .011  .194  .58  .14