Rb9Al9Si27O72*17H2O
Yang P, Armbruster T
Journal of Solid State Chemistry 123 (1996) 140-149
Na, K, Rb and Cs exchange in heulandite single-crystals: X-ray structure
refinements at 100 K
Sample: T = 100 K
Locality: Nasik, India
_database_code_amcsd 0013886
17.6860 18.0070 7.403 90 116.15 90 C2/m
atom      x      y      z occ Biso
Rb1   .0060  .8971   .415 .15  8.9
Rb2  -.0693      0   .825 .28  5.4
Rb2'   .083      0   .245 .11 3.95
Rb3   .7509     .5 -.0657 .89 1.76
Rb3'   .287      0   .024 .04 3.95
Rb4  -.0003     .5  .5637 .33  5.2
Rb4'  .0299     .5   .158 .16  4.8
Al1  .17932 .17018  .1005 .23  .83
Si1  .17932 .17018  .1005 .77  .83
Al2  .28493 .08907  .4960 .42 1.01
Si2  .28493 .08907  .4960 .58 1.01
Al3  .29412 .30910  .2871  .2  .86
Si3  .29412 .30910  .2871  .8  .86
Al4  .06550 .29958  .4141 .15  .93
Si4  .06550 .29958  .4141 .85  .93
Al5       0  .2185      0 .15 1.02
Si5       0  .2185      0 .85 1.02
O1    .3019      0  .5427      2.4
O2    .2300  .1205  .6130     1.77
O3    .1838  .1567  .8892     1.92
O4    .2305  .1019  .2488     1.94
O5        0  .3291     .5      2.1
O6    .0811  .1646  .0615     1.64
O7    .3787  .2688  .4542     2.16
O8    .0089  .2723  .1837     2.05
O9    .2165  .2506  .1966     1.95
O10   .1215  .3708  .4143     2.04
Wat1   .091      0   .010  .2 7.90
Wat2  .4071 -.0908   .048     10.2
Wat3  -.065      0   .250 .81  9.7
Wat4      0   .543      0 .27  5.1
Wat5  -.066   .042   .693 .19 5.02
Wat6  .8606      0   .313 .38   .7
Wat7  -.018      0   .947  .3   .9