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Cordierite |
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Cohen J P, Ross F K, Gibbs G V |
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American Mineralogist 62 (1977) 67-78 |
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An X-Ray and neutron diffraction study of hydrous low cordierite |
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_database_code_amcsd 0000556 |
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17.079 9.730 9.356 90 90 90 Cccm |
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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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Si11 .25 .25 .2507 .559 .00052 .00109 .00148 0.00013 0 0 |
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Al11 .25 .25 .2507 .441 .00052 .00109 .00148 0.00013 0 0 |
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Si16 0 .5 .25 .559 .00043 .00202 .00174 0 0 0 |
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Al16 0 .5 .25 .441 .00043 .00202 .00174 0 0 0 |
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Si21 .1926 .0780 0 .559 .00033 .00104 .00201 0.00003 0 0 |
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Al21 .1926 .0780 0 .441 .00033 .00104 .00201 0.00003 0 0 |
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Si26 .0508 .3081 0 .559 .00039 .00124 .00154 0.00002 0 0 |
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Al26 .0508 .3081 0 .441 .00039 .00124 .00154 0.00002 0 0 |
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Si23 -.1352 .2372 0 .559 .00038 .00119 .00168 0.00009 0 0 |
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Al23 -.1352 .2372 0 .441 .00038 .00119 .00168 0.00009 0 0 |
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Mg .1626 .5 .25 .955 .00038 .00165 .00212 0 0 0 |
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Fe .1626 .5 .25 .040 .00038 .00165 .00212 0 0 0 |
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Mn .1626 .5 .25 .005 .00038 .00165 .00212 0 0 0.00005 |
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Na 0 0 0 .050 5.0 |
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K 0 0 0 .020 5.0 |
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Ca 0 0 0 .020 5.0 |
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H1 -.0029 -.0412 .2397 .140 5.0 |
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H2 .0174 .0833 .3050 .140 5.0 |
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O11 .2473 .1028 .1422 .00073 .00160 .00253 0.00010 -.00032 -.00013 |
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O16 .0623 .4161 .1512 .00052 .00214 .00231 0.00009 -.00007 -.00075 |
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O13 -.1733 .3103 .1416 .00065 .00206 .00231 -.00017 0.00027 -.00061 |
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O21 .1222 .1844 0 .00070 .00242 .00437 0.00061 0 0 |
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O26 -.0432 .2478 0 .00041 .00336 .00410 -.00026 0 0 |
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O23 -.1646 .0796 0 .00093 .00133 .00421 -.00032 0 0 |
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OW .027 0 .25 .280 9.8 |
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