Zippeite Burns P C, Deely K M, Hayden L A The Canadian Mineralogist 41 (2003) 687-706 The crystal chemistry of the zippeite group Sample: SZIPPNH4I _database_code_amcsd 0005849 8.6987 14.166 17.847 90 104.117 90 C2/m atom x y z Uiso U(1) .6663 .2319 .3347 .011 U(2) .3339 .2681 .1654 .011 S(1) 0 .2549 0 .020 S(2) 0 .2361 1/2 .007 NH4(1) .7250 1/2 .5051 .029 NH4(2) .3040 0 .0118 .026 NH4(3) .5490 0 .1598 .036 NH4(4) .4490 1/2 .3265 .022 O(1) -.1139 .1755 .4461 .012 O(2) -.1234 .3177 -.0481 .024 O(3) .4020 .2433 .2947 .018 O(4) -.0690 .1929 .0488 .021 O(5) -.0771 .2973 .5474 .015 O(6) .6000 .2395 .2053 .008 O(7) .6560 .1050 .3197 .021 O(8) .3530 .3950 .1786 .019 O(9) .3090 .1461 .1381 .021 O(10) .6830 .3549 .3581 .021 Wat(11) .9370 1/2 .4011 .033