Heulandite-Ca
Merkle A B, Slaughter M
American Mineralogist 53 (1968) 1120-1138
Determination and refinement of the structure of heulandite
_database_code_amcsd 0000180
17.73 17.82 7.43 90 116.33 90 Cm
atom      x     y     z occ Biso
Ca1   .1417     0 .8478 .34 2.95
Ca2   .4355     0 .1776 .38 3.91
Ca3   .2403    .5 .2989 .48 2.35
Si1   .1075 .1693 .4049 .75 1.32
Al1   .1075 .1693 .4049 .25 1.32
Al2   .9968 .9096 .0056 .75 1.83
Si2   .9968 .9096 .0056 .25 1.83
Si3   .0773 .1917 .7880     1.24
Si4   .3488 .3020 .9107 .60 1.23
Al4   .3488 .3020 .9107 .40 1.23
Si5   .2852 .2152 .5075     1.14
Si6   .4907 .1907 .2188      .89
Si7   .4652 .1708 .5978 .75  .68
Al7   .4652 .1708 .5978 .25  .68
Si8   .2204 .2990 .0899     1.35
Al9   .0714 .4104 .0043 .75  .76
Si9   .0714 .4104 .0043 .25  .76
O1    .9820     0 .9746     3.01
O2    .0626 .1202 .8931     1.80
O3    .0966 .1499 .6104     3.33
O4    .0456 .1087 .2566     1.97
O5    .2851 .3318 .0077     2.21
O6    .2069 .1621 .4386     1.83
O7    .1552 .2425 .9541     4.07
O8    .2951 .2685 .6890     2.34
O9    .0717 .2552 .3240     1.66
O10   .2775 .2646 .3196     2.60
O11   .3666 .1613 .5673     1.62
O12   .0175 .3984 .7552     2.45
O13   .0933    .5 .0873     3.03
O14   .4608 .1575 .3774      .36
O15   .4978 .2551 .6450     3.51
O16   .4085 .3758 .9159     4.30
O17   .0198 .3812 .1167     3.42
O18   .1699 .3746 .1234     1.31
O19   .4100 .2328 .0553     1.82
Wat1  .9957     0 .4686      .88
Wat2  .0388    .5 .4648     1.13
Wat3  .2005 .4079 .5270     4.89
Wat4  .2765    .5 .9634     5.98
Wat5  .3545 .4267 .4683     5.25
Wat6  .3665     0 .7543     3.17
Wat7  .1548     0 .1553 .30 4.20
Wat8  .1985     0 .5998 .32 4.00
Wat9  .2882 .1001 .0552 .30 4.10
Wat10 .3628     0 .4000 .18 4.10
Wat11 .2898     0 .3030 .15 4.10