Metaschoepite Klingensmith A L, Deely K M, Kinman W S, Kelly V, Burns P C American Mineralogist 92 (2007) 662-669 Neptunium incorporation in sodium-substituted metaschoepite Locality: synthetic Sample: Na-Ms-AB2 14.6592 14.0358 16.7148 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) Na21 .510 .684 .276 .235 .040 U1 .23414 .74380 .374763 .01425 .0197 .01137 .01163 -.00003 -.00099 -.00143 U2 .28636 .76851 .60317 .01568 .0250 .01074 .01126 .00214 -.00102 -.00153 U3 .25637 .51220 .239215 .01576 .0276 .01094 .00872 .00096 -.00104 .00007 U4 .25652 .51717 .51109 .01603 .0249 .01192 .01126 -.00124 .00134 .00111 O1 .1683 .7458 .6126 .032 .031 .015 .049 -.001 -.011 -.002 O2 .1452 .4616 .2319 .0290 .035 .031 .021 .003 -.004 -.004 O3 .1225 .7450 .4163 .0202 .017 .021 .022 .000 .005 .005 O4 .4057 .7845 .5964 .0194 .020 .015 .023 -.004 .000 .003 O5 .3699 .5601 .2511 .0228 .031 .013 .025 -.003 -.004 .000 O6 .1407 .5489 .5293 .0266 .027 .027 .026 .000 .003 -.006 O7 .3449 .7463 .3310 .0261 .020 .031 .027 .001 .002 -.012 O8 .3721 .4840 .4895 .0293 .022 .041 .026 .005 -.002 .003 O9 .2524 .9225 .6175 .029 .063 .010 .013 .005 .003 -.001 OH10 .2053 .3617 .4685 .0187 .037 .007 .012 .003 .007 .002 OH11 .2966 .6736 .4881 .040 .091 .016 .012 -.008 -.026 .003 OH12 .2123 .5634 .3726 .0179 .035 .012 .007 .008 .002 .002 OH13 .3123 .6005 .6387 .0168 .030 .009 .011 -.004 -.001 .001 OH14 .1869 .6830 .2435 .0169 .022 .016 .012 -.007 -.001 -.001 OH15 .1880 .8848 .3135 .0180 Wat16A 0 .751 .25 .380 .040 Wat16B 0 .6543 .25 .48 .040 Wat17 .5004 .4164 .1427 .681 .040 Wat18 -.0234 .6449 .5705 .801 .040 Wat19 .0294 .5496 .3701 .777 .040 Wat20 .4959 .6404 .4199 .597 .040 Wat22 .5 .8089 .25 .51 .040