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Cummingtonite |
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Ghose S, Yang H |
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American Mineralogist 74 (1989) 1091-1096 |
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Mn-Mg distribution in a C2/m manganoan cummingtonite: Crystal-chemical |
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considerations |
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_database_code_amcsd 0001266 |
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9.6045 18.1244 5.3251 90 102.642 90 C2/m |
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atom x y z occ Uiso B(1,1) B(2,2) B(3,3) B(1,2) B(1,3) B(2,3) |
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Mn1 0 .0868 .5 .150 .00074 .00087 .00095 0 .00035 0 |
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Mg1 0 .0868 .5 .850 .00074 .00087 .00095 0 .00035 0 |
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Mn2 0 .1769 0 .106 .00067 .00053 .00075 0 .00024 0 |
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Mg2 0 .1769 0 .894 .00067 .00053 .00075 0 .00024 0 |
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Mn3 0 0 0 .062 .00053 .00061 .00042 0 .00022 0 |
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Mg3 0 0 0 .938 .00053 .00061 .00042 0 .00022 0 |
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Ca4 0 .2635 .5 .120 .00134 .00137 .00149 0 .00071 0 |
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Mn4 0 .2635 .5 .836 .00134 .00137 .00149 0 .00071 0 |
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Mg4 0 .2635 .5 .044 .00134 .00137 .00149 0 .00071 0 |
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Si1 .2951 .1699 .7839 .00074 .00065 .00091 -.00007 .00021 -.00004 |
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Si2 .2868 .0842 .2776 .00081 .00085 .00089 -.00008 .00024 .00004 |
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O1 .1143 .0860 .2122 .00051 .00086 .00125 -.00002 .00011 .00000 |
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O2 .1214 .1721 .7179 .00086 .00102 .00121 -.00004 .00022 .00018 |
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O3 .1135 0 .7122 .00084 .00078 .00113 0 .00026 0 |
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O4 .3745 .2470 .7759 .00141 .00120 .00109 -.00043 .00026 .00010 |
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O5 .3492 .1298 .0655 .00098 .00160 .00122 -.00017 .00032 .00046 |
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O6 .3494 .1215 .5575 .00095 .00193 .00136 .00021 .00026 -.00047 |
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O7 .3444 0 .2803 .00109 .00060 .00233 0 .00033 0 |
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H .195 0 .787 .0019 |
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