Clinoptilolite-Ca Armbruster T American Mineralogist 78 (1993) 260-264 Dehydration mechanism of clinoptilolite and heulandite: Single-crystal X-ray study of Na-poor, Ca-, K-, Mg-rich clinoptilolite at 100 K Sample Natural Data obtained from the ICSD _database_code_amcsd 0001547 17.622 17.895 7.399 90 116.45 90 C2/m atom x y z occ Uiso U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3) Si1 .1793 .1696 .0977 .8 .0096 .0149 .0100 -.0004 .0047 .0011 Al1 .1793 .1696 .0977 .2 .0096 .0149 .0100 -.0004 .0047 .0011 Si2 .2861 .0893 .4979 .7 .0123 .0101 .0124 .0005 .0057 .0002 Al2 .2861 .0893 .4979 .3 .0123 .0101 .0124 .0005 .0057 .0002 Si3 .2937 .3094 .2856 .83 .0120 .0135 .0094 .0002 .0058 .0003 Al3 .2937 .3094 .2856 .17 .0120 .0135 .0094 .0002 .0058 .0003 Si4 .0648 .3001 .4124 .84 .0110 .0143 .0105 -.0005 .0051 .0002 Al4 .0648 .3001 .4124 .16 .0110 .0143 .0105 -.0005 .0051 .0002 Si5 0 .2171 0 .92 .0098 .0143 .0109 0 .0042 0 Al5 0 .2171 0 .08 .0098 .0143 .0109 0 .0042 0 O1 .3022 0 .5447 .0300 .0150 .0230 0 .0090 0 O2 .2301 .1210 .6097 .0320 .0270 .0320 -.0040 .0220 -.0080 O3 .1827 .1546 -.1150 .0390 .0280 .0220 -.0040 .0210 .0000 O4 .2354 .1046 .2532 .0240 .0260 .0190 .0090 .0050 .0010 O5 0 .3282 .5 .0330 .0290 .0310 0 .0240 0 O6 .0815 .1627 .0633 .0150 .0200 .0270 -.0010 .0080 .0010 O7 .3764 .2670 .4520 .0290 .0340 .0300 .0110 .0050 .0100 O8 .0084 .2704 .1834 .05 .0250 .0320 .0220 .0010 .0080 -.0110 O9 .2140 .2525 .1842 .10 .0190 .0210 .0300 -.0060 .0130 -.0080 O10 .1193 .3723 .4063 .0220 .0230 .0320 -.0070 .0120 -.0020 Na .1422 0 .6746 .48 .0330 .0140 .0360 0 .0100 0 Ca .4584 0 .8011 .392 .0210 .0260 .0400 0 .0060 0 Ba .248 .5 .055 .08 .0900 .0200 .0700 0 .0600 0 K .248 .5 .055 .14 .0900 .0200 .0700 0 .0600 0 Mg 0 0 .5 .36 .0280 .0150 .0640 0 .0080 0 OH11 .711 0 .973 .3 .0400 .1100 .0500 0 .0100 0 OH12 .096 0 .784 .1400 .0730 .9200 0 -.1400 0 OH13 .4198 .9189 .0348 .0770 .0530 .0750 .0060 .0150 -.0020 OH14 0 .5 .5 .0780 .0380 .1330 0 .0480 0 OH15 -.007 .1014 .573 .41 .0800 .0900 .1300 0 .0400 0 OH16 .044 0 .080 .53 .4300 .0300 .8000 0 .5700 0 OH17 .44 .466 .686 .3 .3200 .2400 .2800 -.1600 .0600 .1000 OH18 .101 0 .112 .19 OH19 .363 0 .192 .16