Clinoptilolite-Na Armbruster T, Gunter M E American Mineralogist 76 (1991) 1872-1883 Stepwise dehydration of heulandite-clinoptilolite from Succor Creek, Oregon, U.S.A.: A single-crystal X-ray study at 100 K sample name: natural _database_code_amcsd 0001429 17.640 17.940 7.405 90 116.53 90 C2/m atom x y z occ Biso Na1 .1543 0 .6688 4.45 Na1" .254 0 .843 3.95 Ca2 .4592 0 .804 .37 1.8 Ca2' .5 -.0295 .5 .44 5.8 Ca21 .466 0 .739 .10 4.2 K3 .743 0 .072 .07 1.6 K3' 0 0 0 .26 4.0 Mg4 0 0 .5 .04 3.95 Al1 .1796 .1703 .0941 .21 .80 Si1 .1796 .1703 .0941 .79 .80 Al2 .2884 .0899 .5006 .39 .83 Si2 .2884 .0899 .5006 .61 .83 Al3 .2926 .3096 .2848 .18 .81 Si3 .2926 .3096 .2848 .82 .81 Al4 .0642 .2990 .4097 .16 .86 Si4 .0642 .2990 .4097 .84 .86 Al5 0 .2139 0 .16 .89 Si5 0 .2139 0 .84 .89 O1 .3039 0 .5437 2.06 O2 .2307 .1198 .6116 1.93 O3 .1818 .1550 -.1170 2.01 O4 .2390 .1073 .2541 1.77 O5 0 .3268 .5 2.10 O6 .0823 .1599 .0666 1.44 O7 .3735 .2655 .4534 2.49 O8 .0072 .2672 .1833 1.95 O9 .2110 .2542 .1787 1.65 O10 .1155 .3723 .3963 1.84 OH11 .2237 .5 -.001 3.7 OH12 .0841 0 .875 .60 11.9 OH13 .0778 .4196 .9672 4.89 OH14 0 .5 .5 5.9 OH15 -.0262 .0899 .508 .40 8.1 OH16 .0941 0 .272 .69 6.0 OH16' .423 .458 .645 .19 7.27 OH17 .058 .042 .705 .15 4.3 OH18 .045 0 .085 .11 3.95