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Hilairite-(Sr) |
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Zubkova N V, Kolitsch U, Pekov I V, Turchkova A G, Vigasina M F, Pushcharovsky D Y, Tillmanns E |
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European Journal of Mineralogy 21 (2009) 495-506 |
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Crystal chemistry of Rb-, Sr-, Ba-, Ca- and Pb-exchanged forms of natural hilairite |
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Locality: Kirovskii mine, Khibiny alkaline complex, Kola Peninsula, Russia |
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Note: sample was synthesized by cation exchange at 150 C |
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_database_code_amcsd 0007282 |
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20.964 20.964 7.836 90 90 120 R3 |
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atom x y z occ Uiso |
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Sr1a .7976 .6512 .2809 .331 .042 |
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Sr1b .8229 .6342 .1516 .393 .063 |
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Sr1c .8672 .6894 .1497 .299 .0345 |
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Sr2 .3482 .6455 .2819 .330 .0410 |
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Zr1 0 0 .05775 .0155 |
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Zr2 .50235 .49769 .04918 .0175 |
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Si1 .6711 .6300 -.0898 .0482 |
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Si2 .5401 .3658 .1876 .0260 |
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Si3 .3295 .4565 .1786 .0413 |
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Si4 .3848 .5432 -.1484 .0188 |
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O1 .5987 .5565 -.091 .045 |
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O2 .5396 .5821 .215 .032 |
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O3 .6826 .6689 .102 .065 |
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O4 .6101 .3629 .209 .039 |
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O5 .3426 .5142 .3396 .060 |
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O6 .5496 .4497 .1925 .021 |
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O7 .4800 .3112 .331 .043 |
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O8 .2533 .3865 .193 .041 |
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O9 .3254 .4963 -.008 .044 |
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O10 .4035 .4451 .1740 .029 |
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O11 .4592 .5475 -.120 .056 |
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O12 .3921 .6256 -.155 .038 |
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Wat1 .832 .7748 .227 .64 .074 |
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Wat2 .6872 .5256 .241 .33 .027 |
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Wat3 .4220 .6655 .178 .73 .076 |
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Wat4 .915 .673 .161 .50 .066 |
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