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Calciobetafite |
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Mazzi F, Munno R |
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American Mineralogist 68 (1983) 262-276 |
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Calciobetafite (new mineral of the pyrochlore group) and related minerals from |
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Campi Flegrei, Italy; crystal structures of polymignyte and zirkelite: |
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comparison with pyrochlore and zirconolite |
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_database_code_amcsd 0000891 |
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10.2978 10.2978 10.2978 90 90 90 *Fd3m |
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.125 .125 .125 |
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atom x y z occ B(1,1) B(2,2) B(3,3) B(1,2) B(1,3) B(2,3) |
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Ca 0 0 0 .685 .00181 .00181 .00181 -.00013 -.00013 -.00013 |
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Na 0 0 0 .076 .00181 .00181 .00181 -.00013 -.00013 -.00013 |
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Th 0 0 0 .039 .00181 .00181 .00181 -.00013 -.00013 -.00013 |
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U 0 0 0 .039 .00181 .00181 .00181 -.00013 -.00013 -.00013 |
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Ce 0 0 0 .161 .00181 .00181 .00181 -.00013 -.00013 -.00013 |
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Ti .5 .5 .5 .535 .00222 .00222 .00222 -.00058 -.00058 -.00058 |
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Nb .5 .5 .5 .446 .00222 .00222 .00222 -.00058 -.00058 -.00058 |
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Ta .5 .5 .5 .019 .00222 .00222 .00222 -.00058 -.00058 -.00058 |
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O1 -.1771 .125 .125 .00256 .00179 .00179 0 0 .00093 |
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O2 .125 .125 .125 .5 .00416 .00416 .00416 0 0 0 |
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F .125 .125 .125 .5 .00416 .00416 .00416 0 0 0 |
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