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Anorthite |
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Wenk H R, Joswig W, Tagai T, Korekawa M, Smith B K |
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American Mineralogist 65 (1980) 81-95 |
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The average structure of An 62-66 labradorite |
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Note: studied with X-rays |
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Locality: Surtsey, Iceland |
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_database_code_amcsd 0019662 |
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8.1736 12.8736 7.1022 93.462 116.054 90.475 C-1 |
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atom x y z occ B(1,1) B(2,2) B(3,3) B(1,2) B(1,3) B(2,3) |
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Ca1 .2665 .9862 .1649 .325 .0047 .0095 .0156 -.0023 0.0048 -.0074 |
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Na1 .2665 .9862 .1649 .160 .0047 .0095 .0156 -.0023 0.0048 -.0074 |
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Ca2 .2723 .0306 .0952 .325 .0034 .00276 .0087 0.00127 0.0011 -.00157 |
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Na2 .2723 .0306 .0952 .160 .0034 .00276 .0087 0.00127 0.0011 -.00157 |
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Si1 .00632 .16304 .21518 .595 .0033 .0012 .0042 -.00043 0.00153 0.00022 |
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Al1 .00632 .16304 .21518 .405 .0033 .0012 .0042 -.00043 0.00153 0.00022 |
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Si2 .00264 .81626 .23099 .595 .00342 .00126 .00389 0.00090 0.00145 0.00020 |
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Al2 .00264 .81626 .23099 .405 .00342 .00126 .00389 0.00090 0.00145 0.00020 |
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Si3 .68589 .10882 .31775 .595 .0030 .00091 .0062 0.00024 0.00144 0.00013 |
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Al3 .68589 .10882 .31775 .405 .0030 .00091 .0062 0.00024 0.00144 0.00013 |
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Si4 .68100 .87870 .35715 .595 .0025 .0007 .0049 0.00017 0.00128 0.00043 |
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Al4 .68100 .87870 .35715 .405 .0025 .0007 .0049 0.00017 0.00128 0.00043 |
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Oa1 .0042 .1290 .9811 .0114 .00287 .0080 0.00101 0.0058 0.00086 |
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Oa2 .5798 .9914 .2789 .0043 .00146 .0099 0.00017 0.0026 0.00079 |
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Obo .8131 .1037 .1886 .0082 .00192 .0147 -.00041 0.0067 -.00031 |
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Obm .8156 .8532 .2435 .0082 .00269 .0212 0.00081 0.0079 -.00070 |
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Oco .0139 .2895 .2818 .0072 .00242 .0122 -.00056 0.0045 0.00048 |
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Ocm .0125 .6869 .2133 .0074 .00244 .0097 0.00181 0.0021 -.00020 |
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Odo .1979 .1073 .3822 .0070 .00226 .0086 0.00060 0.0015 0.00050 |
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Odm .1900 .8661 .4292 .0075 .00263 .0118 0.00085 -.0001 -.00062 |
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