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Tancoite |
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Hawthorne F C |
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Tschermaks Mineralogische und Petrographische Mitteilungen 31 (1983) 121-135 |
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The crystal structure of tancoite |
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6.948 14.089 14.065 90 90 90 Pbcb |
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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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H2 .587 .704 .132 1.0 |
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Na1 .5 0 0 2.2 .0086 .0046 .0015 -.0009 -.0013 .0005 |
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Na2 .5 .5143 .25 2.2 .0110 .0044 .0013 0 -.0017 0 |
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Na3 .0247 .25 0 1.3 .0145 .0014 .0001 0 0 -.0002 |
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Na4 0 .2479 .25 2.1 .0178 .0011 .0025 0 -.0019 0 |
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Li .2614 .8716 .1258 2.9 .0119 .0009 .0073 -.0012 .0054 -.0010 |
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Al1 0 0 0 .33 .0047 .0004 -.0003 .0002 -.0008 .0001 |
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Al2 0 .5022 .25 .56 .0003 .0006 .0014 0 .0010 0 |
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P1 .2755 .3675 .1271 .65 .0027 .0010 .0008 .0007 .0005 .0001 |
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P2 .2633 .6416 .1200 .49 .0028 .0008 .0004 -.0006 -.0001 .0001 |
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O1 .1852 .0945 .2863 .7 .0037 .0008 .0009 -.0016 -.0003 -.0004 |
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O2 .1776 .4033 .2202 .6 .0037 .0008 .0006 .0015 .0003 .0000 |
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O3 .1829 .5914 .0340 1.2 .0102 .0010 .0010 -.0006 -.0009 .0003 |
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O4 .1643 .5968 .5420 .7 .0050 .0012 .0004 -.0001 .0005 .0000 |
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O5 .2641 .2587 .1293 1.28 .0104 .0008 .0015 .0002 -.0001 -.0002 |
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O6 .1968 .7455 .1200 1.18 .0107 .0007 .0012 -.0005 .0005 -.0001 |
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O7 .4809 .4050 .1270 1.42 .0040 .0029 .0015 -.0002 .0007 .0010 |
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O8 .4828 .6330 .1211 1.22 .0023 .0025 .0015 .0006 .0003 .0008 |
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O9 .1140 .0031 .1217 .68 .0036 .0013 .0004 .0002 .0015 .0000 |
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H1 .184 .065 .147 1.0 |
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