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Columbite-(Mg) |
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Pagola S, Carbonio R E, Alonso J A, Fernandez-Diaz M T |
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Journal of Solid State Chemistry 134 (1997) 76-84 |
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Crystal structure refinement of Mg Nb2 O6 columbite from neutron powder |
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diffraction data and study of the ternary system MgO-Nb2O5-NbO, with evidence |
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of formation of new reduced pseudobrookite Mg5-xNb4+xO15-d (1.14 |
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Locality: synthetic |
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Note: reported and calculated Biso(O2)'s do not match |
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_database_code_amcsd 0013945 |
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14.1875 5.7001 5.0331 90 90 90 Pbcn |
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atom x y z Biso B(1,1) B(2,2) B(3,3) B(1,2) B(1,3) B(2,3) |
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Mg 0 .1688 .25 .40 .00038 .0049 .0033 0 -.0001 0 |
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Nb .15993 .3181 .7538 .24 .00028 .0014 .0028 .0001 .0005 .0011 |
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O1 .0955 .3944 .4321 .37 .00067 .0025 .0033 -.0001 -.0004 .0011 |
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O2 .0796 .1163 .9077 .25 .00048 .0063 .0032 -.0006 .0001 .0001 |
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O3 .2560 .1222 .5833 .33 .00051 .0013 .0029 .0006 .0006 -.0002 |
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View JMOL 3-D Structure (permalink)
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