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Uranopolycrase |
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Aurisicchio C, Orlandi P, Pasero M, Perchiazzi N |
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European Journal of Mineralogy 5 (1993) 1161-1165 |
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Uranopolycrase, the uranium-dominant analogue of polycrase-(Y), |
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a new mineral from Elba Island, Italy, and its crystal structure |
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Locality: Elba Island, Italy |
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14.51 5.558 5.173 90 90 90 Pbcn |
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atom x y z occ Biso U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3) |
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U 0 .2266 .25 .62 1.08 .013 .016 .012 0 0 0 |
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Y 0 .2266 .25 .29 1.08 .013 .016 .012 0 0 0 |
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Th 0 .2266 .25 .07 1.08 .013 .016 .012 0 0 0 |
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Mn 0 .2266 .25 .03 1.08 .013 .016 .012 0 0 0 |
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Ca 0 .2266 .25 .02 1.08 .013 .016 .012 0 0 0 |
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Nd 0 .2266 .25 .01 1.08 .013 .016 .012 0 0 0 |
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Ti .1690 .3222 .8152 .73 .63 .009 .005 .010 .001 .001 -.001 |
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Nb .1690 .3222 .8152 .18 .63 .009 .005 .010 .001 .001 -.001 |
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Ta .1690 .3222 .8152 .06 .63 .009 .005 .010 .001 .001 -.001 |
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O1 .092 .433 .526 .2 |
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O2 .084 .096 .916 .8 |
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O3 .257 .135 .647 .5 |
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