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Laurentianite |
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Haring M M M, McDonald A M, Cooper M A, Poirier G A |
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The Canadian Mineralogist 50 (2012) 1265-1280 |
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Laurentianite, [NbO(H2O)]3(Si2O7)2[Na(H2O)2]3, a new mineral from Mont |
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Saint-Hilaire, Quebec: description, crystal-structure determination and paragenesis |
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Locality: Mont Saint-Hilaire, Quebec, Canada |
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_database_code_amcsd 0019711 |
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9.937 9.937 7.004 90 90 120 P3 |
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atom x y z occ Uiso U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3) |
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Na .3304 .1644 .2429 .92 .0236 .0262 .0311 .0122 .0133 -.0002 -.0055 |
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Nb1 .3326 .1293 .7482 .55 .0097 .0108 .0156 .0011 .0055 -.0001 .0019 |
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Nb2 .3322 .2015 .7389 .45 .0137 .0116 .0162 .0120 .0060 -.0002 -.0001 |
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Si1 2/3 1/3 .0157 .0086 .0114 .0114 .0029 .0057 0 0 |
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Si2 2/3 1/3 .4783 .0089 .0123 .0123 .0021 .0062 0 0 |
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Si3 0 0 .0161 .0100 .0126 .0126 .0048 .0063 0 0 |
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Si4 0 0 .4780 .0104 .0136 .0136 .0039 .0068 0 0 |
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O1 2/3 1/3 .2378 .018 .027 .027 .000 .014 0 0 |
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O2 .1777 .1019 .9436 .0198 .009 .032 .009 .003 .005 .004 |
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O3 .4852 .2546 .9532 .0218 .018 .038 .009 .014 -.006 -.009 |
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O4 0 0 .2382 .021 .031 .031 .000 .015 0 0 |
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O5 .1741 .0746 .5526 .0190 .010 .028 .013 .005 -.003 .002 |
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O6 .4893 .2318 .5436 .0235 .023 .024 .020 .009 .006 .001 |
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O7 .3328 .3796 .7136 .0192 .023 .021 .018 .014 .000 .004 |
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Wat8 .3321 .9514 .7812 .027 .028 .024 .025 .010 .000 -.004 |
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Wat9 .3320 .3998 .3088 .036 .046 .032 .030 .020 .004 .017 |
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Wat10 .0748 .4065 .1923 .046 .070 .052 .023 .036 .004 .001 |
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View JMOL 3-D Structure (permalink) |
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