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Arisite-(Ce) |
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Piilonen P C, McDonald A M, Grice J D, Cooper M A, Kolitsch U, |
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Rowe R, Gault R A, Poirier G |
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Mineralogical Magazine 74 (2010) 257-268 |
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Arisite-(La), a new REE-fluorcarbonate mineral from the Aris phonolite (Namibia), |
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with descriptions of the crystal structures of arisite-(La) and arisite-(Ce) |
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Locality: Aris, Namibia |
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Note: x-coordinate of O1 adjusted to special position |
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_database_code_amcsd 0014600 |
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5.1109 5.1109 8.6713 90 90 120 P-6m2 |
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atom x y z occ Uiso |
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Na 0 0 0 .013 |
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Ce 2/3 1/3 .72542 .47 .012 |
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La 2/3 1/3 .72542 .40 .012 |
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Pr 2/3 1/3 .72542 .02 .012 |
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Nd 2/3 1/3 .72542 .05 .012 |
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Sm 2/3 1/3 .72542 .01 .012 |
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Ca 2/3 1/3 .72542 .05 .012 |
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C1 1/3 2/3 .805 .013 |
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O1 .6252 .8126 .8013 .017 |
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F 2/3 1/3 0 .031 |
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C2 0 0 .5 .70 .033 |
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O2 .8475 .1525 .5 .70 .026 |
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F2 .8475 .1525 .5 .20 .026 |
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