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Melanotekite |
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Dorsam G, Liebscher A, Wunder B, Franz G |
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American Mineralogist 93 (2008) 573-583 |
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Crystal structures of synthetic melanotekite (Pb2Fe2Si2O9), kentrolite |
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(Pb2Mn2Si2O9), and the aluminum analogue (Pb2Al2Si2O9) |
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Locality: synthetic |
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_database_code_amcsd 0004535 |
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6.9788 11.0164 10.0881 90 90 90 Pbcn |
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atom x y z occ Uiso U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3) |
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Pb1 .4482 .3016 .5494 .7 .0104 .0079 .0114 .0120 -.0018 -.0011 -.0012 |
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Pb2 .5121 .3088 .5499 .3 .0300 .0652 .0140 .0108 .0020 -.0003 .0140 |
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Fe1 .5 0 0 .0070 .0091 .0052 .0069 -.0005 -.0012 .0010 |
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Fe2 .5 .1521 .25 .0073 .0080 .0081 .0059 0 .0006 0 |
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Si .2151 -.0864 .2503 .0062 .0033 .0072 .0081 .0032 -.0017 -.0012 |
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O1 .3414 .0109 .3347 .0073 .0104 .0043 .0073 .0040 -.0009 -.0014 |
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O2 .3039 -.1083 .1019 .0128 .0158 .0131 .0096 -.0018 .0053 -.0032 |
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O3 .1915 -.2201 .3227 .0121 .0085 .0159 .0118 -.0012 .0009 -.0038 |
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O4 0 -.0244 .25 .0199 .0050 .0146 .0400 0 -.0050 0 |
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O5 .6146 .1481 .4259 .0114 .0111 .0148 .0083 .0027 .0005 -.0049 |
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