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Britholite-(La) |
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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 0014862 |
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9.678 9.682 7.1631 90 90 120.04 P2_1 |
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atom x y z occ Biso |
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La1a .33267 .66656 .0057 .607 .22 |
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Na1a .33267 .66656 .0057 .393 .22 |
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La1b .33415 .66678 .5002 .744 1.04 |
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Na1b .33415 .66678 .5002 .256 1.04 |
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La2a -.01493 .23465 .2513 .974 .457 |
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Na2a -.01493 .23465 .2513 .026 .457 |
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La2b .23454 .24954 .7484 .977 .462 |
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Na2b .23454 .24954 .7484 .023 .462 |
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La2c .24944 .01482 .2506 .975 .459 |
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Na2c .24944 .01482 .2506 .025 .459 |
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Si1 .0289 .6287 .25 .35 |
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Si2 .3715 .4004 .248 .33 |
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Si3 .5997 .9708 .252 .37 |
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O1a .8366 .5165 .245 .85 |
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O1b .4821 .3200 .261 .77 |
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O1c .6783 .1623 .243 .88 |
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O2a .4068 .8779 .267 .70 |
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O2b .4704 .5933 .238 .72 |
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O2c .1230 .5304 .267 .73 |
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O3a .6364 .8985 .0618 .39 |
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O3b .6811 .9258 .422 1.0 |
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O3c .2615 .3625 .063 .50 |
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O3d .2443 .3189 .425 .9 |
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O3e .0747 .7546 .083 .9 |
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O3f .1017 .7373 .444 .54 |
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O -.0007 -.0009 .225 .55 1.9 |
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F -.0007 -.0009 .225 .45 1.9 |
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