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Ralstonite |
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Effenberger H, Kluger F |
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Neues Jahrbuch fur Mineralogie, Monatshefte 1984 (1984) 97-108 |
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Ralstonite: a contribution to the knowledge of composition and crystal structure |
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Locality: Ivigtut, Greenland |
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_database_code_amcsd 0014784 |
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9.91 9.91 9.91 90 90 90 *Fd3m |
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.125 .125 .125 |
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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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Al 0 0 0 .774 .49 .0013 .0013 .0013 -.0004 -.0004 -.0004 |
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Mg 0 0 0 .226 .49 .0013 .0013 .0013 -.0004 -.0004 -.0004 |
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Na .5 .5 .5 .205 2.42 .0062 .0062 .0062 -.0022 -.0022 -.0022 |
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F .3138 .125 .125 .763 1.06 .0025 .0029 .0029 0 0 .0007 |
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OH .3138 .125 .125 .237 1.06 .0025 .0029 .0029 0 0 .0007 |
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Ow .375 .375 .375 .836 4.09 .0105 .0105 .0105 0 0 0 |
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H .33 .33 .33 .418 1.00 |
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Tunisite |
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Effenberger H, Kluger F, Pertlik F, Zemann J |
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Tschermaks Mineralogische und Petrographische Mitteilungen 28 (1981) 65-77 |
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Tunisit: kristallstruktur und revision der chemischen formel |
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_database_code_amcsd 0015681 |
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11.1983 11.1983 6.5637 90 90 90 *P4/nmm |
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.25 -.25 0 |
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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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Na .25 .25 .93704 2.55 .00328 .00328 .02514 0 0 0 |
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Ca 0 0 0 2.56 .00579 .00579 .01065 .00464 -.00604 -.00604 |
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Al .40479 -.40479 .5 .52 .00097 .00097 .00342 .00000 -.00002 -.00002 |
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C .25 .51396 .15653 .67 .00126 .00135 .00398 0 0 .00022 |
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O_c3 .46093 .64970 .75908 .90 .00266 .00116 .00449 -.00014 -.00084 -.00009 |
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O_c4 .25 .46534 .98187 1.26 .00292 .00340 .00339 0 0 -.00142 |
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O_h1 .25 .90696 .59918 .74 .00123 .00221 .00274 0 0 -.00041 |
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O_h2 .43878 .43878 .60715 .77 .00118 .00118 .00645 -.00014 .00009 .00009 |
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H1 .25 .934 .720 .77 |
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H2 .391 .391 .577 2.21 |
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Cl .25 .25 .46863 2.46 .00201 .00201 .03084 0 0 0 |
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View JMOL 3-D Structure
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