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Paranatisite |
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Sokolova E V, Yamnova N A, Egorov-Tismenko Y K, Khomyakov A P |
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Soviet Physics Doklady 30 (1985) 822-825 |
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Crystal structure of a new mineral Na8Ti3.5O2(OH)2[SiO4]4 - |
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a polymorphous modification of natisite |
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Locality: Khibiny mountain range, Kolsky Peninsula, Russia |
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_database_code_amcsd 0020476 |
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9.827 9.167 4.799 90 90 90 Pmma |
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atom x y z occ Biso B(1,1) B(2,2) B(3,3) B(1,2) B(1,3) B(2,3) |
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Na1 .25 0 .404 1.9 .00724 .00654 .00868 0 0 0 |
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Na2 0 .5 0 1.2 .00569 .00327 .00651 0 .00212 0 |
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Na3 .25 .252 .996 2.2 .00776 .00505 .01302 0 0 .00056 |
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Ti1 0 0 0 .75 1.8 .01967 .00000 .00217 0 -.01643 0 |
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Ti2 .25 .5 .535 .2 .00103 .00267 .00868 0 0 0 |
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Si 0 .251 .5 .8 .00233 .00208 .01736 0 0 0 |
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O1 .614 .355 .355 1.1 .00000 .00684 .01736 -.00194 .00053 -.00341 |
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O2 .435 .148 .255 .9 .00258 .00119 .01519 -.00138 -.00318 0 |
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OH3 .307 0 .873 .5 2.3 .01682 .00029 .02171 0 -.01060 0 |
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O4 .25 .5 .178 .8 .00621 .00327 .00108 0 0 0 |
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View JMOL 3-D Structure (permalink) |
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