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Britholite-(Gd) |
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Hughes J M, Mariano A N, Drexler J W |
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Neues Jahrbuch fur Mineralogie, Monatshefte 1992 (1992) 311-319 |
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Crystal structures of synthetic Na-REE-Si oxyapatites, synthetic monoclinic britholite |
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Locality: synthetic |
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_database_code_amcsd 0014863 |
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9.410 9.413 6.8740 90 90 120.01 P2_1 |
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atom x y z occ Biso |
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Gd1a .33358 .66488 -.0003 .636 .41 |
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Na1a .33358 .66488 -.0003 .364 .41 |
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Gd1b .33300 .66820 .5005 .821 .88 |
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Na1b .33300 .66820 .5005 .179 .88 |
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Gd2a -.00843 .23358 .2516 .985 .450 |
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Na2a -.00843 .23358 .2516 .015 .450 |
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Gd2b .23361 .24200 .7515 .983 .444 |
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Na2b .23361 .24200 .7515 .017 .444 |
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Gd2c .24197 .00841 .2531 .980 .426 |
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Na2c .24197 .00841 .2531 .020 .426 |
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Si1 .0278 .6288 .25 .38 |
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Si2 .3718 .3990 .253 .45 |
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Si3 .6007 .9720 .259 .43 |
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O1a .8306 .5146 .249 1.04 |
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O1b .4854 .3164 .264 .93 |
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O1c .6840 .1689 .258 1.09 |
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O2a .4016 .8762 .262 .88 |
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O2b .4739 .5971 .249 .88 |
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O2c .1252 .5261 .258 .71 |
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O3a .6405 .8971 .058 .5 |
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O3b .6796 .9217 .433 .7 |
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O3c .2555 .3590 .057 .7 |
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O3d .2422 .3214 .433 .7 |
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O3e .0794 .7571 .078 .6 |
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O3f .1042 .7460 .455 .9 |
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O .0007 .0004 .231 .81 1.40 |
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F .0007 .0004 .231 .19 1.40 |
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