Haiweeite Plasil J, Fejfarova K, Cejka J, Dusek M, Skoda R, Sejkora J American Mineralogist 98 (2013) 718-723 Revision of the crystal structure and chemical formula of haiweeite, Ca(UO2)2(Si5O12)(OH)2*6H2O Locality: Teofilo Otoni, Minas Gerais, Brazil _database_code_amcsd 0019934 18.3000 14.2331 17.9192 90 90 90 Pbcn atom x y z occ Uiso U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3) U1 .24799 .12566 .034427 .01044 .0202 .00590 .00521 .00036 -.00001 -.0003 U2 .25411 .37558 .13863 .00964 .0174 .00550 .0060 .00020 .00013 -.0006 Ca .01502 .8775 .13941 .0328 .0235 .0358 .0391 -.0045 .0043 -.0085 Si1 .24794 .3757 -.03695 .0120 .0249 .0058 .0053 .0023 -.0043 -.001 Si2 .25733 .1249 .20948 .0155 .034 .0060 .0061 -.0011 -.0019 .000 Si3 .1518 .1765 .3346 .0188 .023 .0167 .016 -.0042 -.0017 .0033 Si4 .2257 .3761 .33566 .0162 .0308 .0096 .0083 -.001 .0002 -.0013 Si5 .6434 .0704 .1641 .0168 .024 .0146 .0116 .0015 .0011 .0015 O1 .3209 .3724 -.0906 .026 O2 .1575 .3700 .1472 .024 O3 .1874 .1228 .2640 .025 O4 .2445 .2879 .0201 .015 O5 .2532 .0383 .1541 .013 OH6 .0648 .1658 .3307 .033 O7 .3521 .3793 .1275 .0206 O8 .3295 .1240 .2613 .0233 O9 .2745 .3783 .2613 .025 OH10 .5547 .0806 .1601 .034 O11 .2494 -.0369 .0179 .016 O12 .2604 .2135 .1534 .020 O13 .1708 .2849 .3323 .029 O14 .2717 .3746 .4112 .026 O15 .1772 .3762 -.0930 .025 Wat16 .0480 1.0429 .1545 .062 O17 .1672 .4632 .3355 .029 Wat18 -.0796 .9273 .2290 .50 .066 Wat19 -.0940 .7925 .1114 .053 Wat20 .0474 .812 .0137 .50 .090 Wat20' .0374 .874 .0080 .50 .090 Wat21 .0531 .7134 .1513 .50 .051 Wat21' .0463 .7258 .1929 .50 .051 O22 .1504 .1248 .0458 .0226 O23 .3452 .1270 .0257 .0226 Wat24 .075 1.022 -.0745 .50 .086 Wat24' .054 1.016 -.0446 .50 .086 Wat25 .470 .002 .056 .50 .147 Wat25' .486 -.110 .160 .50 .147 Wat26 .458 -.206 .051 .50 .064 Wat26' .451 -.181 .018 .50 .064