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Kvanefjeldite |
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Johnsen O, Leonardsen E S, Falth L, Annehed H |
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Neues Jahrbuch fur Mineralogie, Monatshefte 1983 (1983) 505-512 |
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Crystal structure of kvanefjeldite: The introduction of [Si3O7OH] |
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layers with eight-membered rings |
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Locality: Ilimaussaq alkaline intrusion, South Greenland |
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_database_code_amcsd 0014783 |
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10.213 15.878 9.058 90 90 90 Pcab |
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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 .68082 -.04507 .79810 1.72 .00388 .00186 .00506 .00013 -.00052 -.00042 |
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Na2 .84529 .30661 .49949 1.68 .00423 .00149 .00540 -.00003 .00000 .00024 |
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Ca 0 0 0 .5 .87 |
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Mn 0 0 0 .5 .87 |
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Si1 .58291 .18032 .30192 .89 .00216 .00095 .00250 .00004 .00010 -.00003 |
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Si2 .54817 .37446 .32987 .99 .00222 .00103 .00308 .00010 .00017 .00000 |
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Si3 .79795 .11392 .50797 .91 .00209 .00101 .00260 -.00004 -.00012 .00001 |
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O1 .51802 .27299 .32541 1.35 .00287 .00124 .00486 .00023 .00023 -.00020 |
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O2 .47871 .11050 .33835 1.30 .00313 .00131 .00392 -.00031 .00002 .00017 |
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O3 .71924 .03448 .56521 1.25 .00246 .00119 .00469 -.00007 .00016 .00024 |
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O4 .59159 .41076 .17584 1.45 .00343 .00163 .00390 .00003 .00055 .00020 |
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O5 .70948 .18010 .41214 1.30 .00298 .00128 .00415 .00002 -.00076 .00018 |
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O6 .63873 .17636 .13244 1.30 .00354 .00137 .00317 .00011 .00054 .00013 |
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O7 .66459 .38868 .45356 1.50 .00348 .00147 .00478 -.00010 -.00076 .00014 |
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O8 .41495 .41813 .39743 1.22 .00289 .00108 .00424 .00027 .00068 .00027 |
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H .697 .433 .445 4.90 |
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View JMOL 3-D Structure (permalink) |
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