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Chivruaiite |
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Men'shikov Y P, Krivovichev S V, Pakhomovsky Y A, Yakovenchuk V N, |
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Ivanyuk G Yu, Mikhailova J A, Armbruster T, Selivanova E A |
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American Mineralogist 91 (2006) 922-928 |
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Chivruaiite, Ca4(Ti,Nb)5[(Si6O17)2|(OH,O)5]*13-14H2O, a new mineral |
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from hydrothermal veins of Khibiny and Lovozero alkaline massifs |
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Locality: Chivruai River valley, Kola peninsula, Russia |
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_database_code_amcsd 0004161 |
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7.1918 23.166 6.9472 90 90 90 Cmmm |
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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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Ca1 0 .13883 .2145 .35 .0320 .0165 .0247 .055 0 0 .014 |
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Sr1 0 .13883 .2145 .025 .0320 .0165 .0247 .055 0 0 .014 |
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Mn2 .25 .25 .5 .10 .024 .023 .037 .012 .008 0 0 |
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Ca2 .25 .25 .5 .075 .024 .023 .037 .012 .008 0 0 |
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K -.856 .5 .5 .05 .120 |
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Ba -.856 .5 .5 .025 .120 |
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Ti1 .25 .25 0 .78 .0172 .0224 .0156 .0137 .0067 0 0 |
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Nb1 .25 .25 0 .22 .0172 .0224 .0156 .0137 .0067 0 0 |
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Ti2 -.5 .5 .0319 .25 .020 .0171 .0106 .033 0 0 0 |
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Si1 0 .33852 .27054 .0143 .0173 .0161 .0096 0 0 -.0002 |
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Si2 .0962 .43567 0 .50 .0155 .0152 .0101 .0211 -.0007 0 0 |
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O1 0 .5 0 .0235 .024 .011 .035 0 0 0 |
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O2 0 .3454 .5 .0351 .068 .028 .010 0 0 0 |
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O3 0 .21976 0 .696 .0192 .014 .016 .028 0 0 0 |
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OH3 0 .21976 0 .304 .0192 .014 .016 .028 0 0 0 |
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O4 .1851 .30653 .2009 .0341 .0191 .0407 .043 .0071 -.004 -.027 |
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O5 0 .40438 .1893 .0350 .067 .0182 .020 0 0 .003 |
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Wat6 0 .1986 .5 .072 .090 .071 .056 0 0 0 |
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O7 .3179 .4387 .0420 .25 .024 .013 .020 .040 -.001 .000 .000 |
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Wat8 -.5 .5 .414 .30 .064 |
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O9 -.5 .5 .267 .174 .042 |
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OH9 -.5 .5 .267 .076 .042 |
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Wat10 0 .5 .5 .34 .13 |
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Wat11 -.5 .5783 .5 .29 .080 |
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Wat12 .413 .411 0 .12 .080 |
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Wat13 -.340 .5686 .425 .19 .080 |
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Wat14 0 .099 .166 .11 .080 |
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View JMOL 3-D Structure (permalink) |
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