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Rankamaite |
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Atencio D, Contreira R R, Mills S J, Coutinho J M V, |
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Honorato S B, Ayala A P, Ellena J, De Andrade M B |
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American Mineralogist 96 (2011) 1455-1460 |
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Rankamaite from the Urubu pegmatite, Itinga, Minas Gerais, |
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Brazil: Crystal chemistry and Rietveld refinement |
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Note: Identification of OH not reported |
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Locality: Urubu pegmatite, Itinga, Minas Gerais, Brazil |
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_database_code_amcsd 0018556 |
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17.224 17.687 3.9361 90 90 90 C222 |
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atom x y z occ Biso |
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K1 .8322 0 .5 .63 4.5 |
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Na2 .4990 0 .5 .43 4.5 |
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Na3 .25 .25 .5 .68 4.5 |
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Ta1 0 0 0 .71 2 |
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Nb1 0 0 0 .29 2 |
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Ta2 0 .67188 0 .72 2 |
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Nb2 0 .67188 0 .28 2 |
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Ta3 .18037 .39406 0 .85 2 |
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Al3 .18037 .39406 0 .15 2 |
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Ta4 .11190 .82225 0 .89 2 |
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Nb4 .11190 .82225 0 .11 2 |
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O1 .3235 .1061 .5 1 |
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O2 .6165 .6777 .5 1 |
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O3 .1376 .2915 0 1 |
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O4 .0711 .5780 0 1 |
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O5 .2790 .3377 0 1 |
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O6 .1103 .9442 0 1 |
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O7 0 .3334 .5 1 |
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O8 0 .2011 0 1 |
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O9 .7108 0 0 1 |
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O10 0 0 .5 1 |
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| Download AMC data (View Text File)
Download CIF data (View Text File)
Download diffraction data (View Text File)
View JMOL 3-D Structure (permalink)
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