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Aristarainite |
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Ghose S, Wan C |
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American Mineralogist 62 (1977) 979-989 |
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Aristarainite: Na2Mg[B6O8(OH)4]2.4H2O: a sheet structure with chains of |
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hexaborate polyanions |
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_database_code_amcsd 0000598 |
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18.886 7.521 7.815 90 97.72 90 P2_1/a |
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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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Mg 0 0 0 .00070 .00554 .00410 .00045 .00017 .00009 |
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Na .15952 .3596 .2899 .00157 .02380 .01059 -.00167 -.00001 -.00302 |
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B1 .43470 .3460 .3264 .00066 .00528 .00350 .00006 -.00010 -.00027 |
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B2 .38760 .1974 .0335 .00065 .00470 .00421 .00000 .00028 -.00027 |
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B3 .30083 .4000 .1834 .00062 .00544 .00377 .00022 .00013 -.00041 |
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B4 .47496 .0483 .2533 .00117 .00659 .00523 .00067 .00092 .00065 |
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B5 .25658 .1548 .9888 .00078 .00429 .00448 -.00009 .00009 .00064 |
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B6 .33928 .4416 .4961 .00102 .00684 .00515 .00039 .00037 -.00020 |
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O1 .47237 .1790 .3709 .00114 .00685 .00475 .00091 -.00037 -.00005 |
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Oh2 .48064 .4734 .2541 .00094 .00852 .00385 -.00110 -.00001 -.00028 |
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O3 .37300 .3084 .1864 .00060 .00486 .00354 .00015 -.00001 -.00030 |
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O4 .40957 .4121 .4814 .00083 .00773 .00376 .00002 .00014 -.00092 |
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O5 .43580 .0515 .0943 .00105 .00556 .00475 .00069 .00014 -.00031 |
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Oh6 .42279 .3154 .9188 .00075 .00528 .00423 -.00025 .00042 -.00060 |
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O7 .32265 .1240 .9421 .00066 .00723 .00552 -.00053 .00031 -.00208 |
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O8 .24590 .2806 .1069 .00061 .00639 .00680 -.00031 .00033 -.00177 |
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O9 .19713 .0630 .9168 .00057 .00617 .00783 -.00021 .00009 -.00208 |
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O10 .28768 .4373 .3579 .00080 .01054 .00453 .00080 .00019 -.00114 |
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Oh11 .48078 .0953 .7071 .00340 .01275 .00404 .00480 .00038 .00107 |
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O12 .31871 .4800 .6537 .00137 .02170 .00438 .00226 .00034 -.00154 |
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OW13 .08086 .2036 .0388 .00087 .00671 .00790 .00008 .00041 .00061 |
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OW14 .16514 .3779 .5931 .00392 .03457 .02377 .00174 .00380 .00026 |
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H1 .489 .491 .667 .8 |
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H2 .438 .238 .842 1.2 |
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H3 .476 .118 .599 1.4 |
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H4 .348 .444 .741 1.4 |
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H5 .073 .309 .983 1.0 |
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H6 .119 .161 -.007 2.4 |
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H7 .166 .502 .562 3.2 |
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H8a .184 .367 .715 .5 5.0 |
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H8b .117 .289 .585 .5 3.6 |
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