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Sursassite |
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Gottschalk M, Fockenberg T, Grevel K-D, Wunder B, Wirth R, Schreyer W, Maresch W V |
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European Journal of Mineralogy 12 (2000) 935-945 |
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Crystal structure of the high-pressure phase Mg4(MgAl)Al4[Si6O21/(OH)7]: |
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an analogue of sursassite |
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Sample: A53 |
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8.5424 5.7117 9.6484 90 108.298 90 P2_1/m |
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atom x y z occ Uiso |
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MgM1 .1804 1/4 .3154 .005 |
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MgM2 .2765 1/4 .6718 .006 |
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AlM3 1/2 0 1/2 .58 .018 |
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MgM3 1/2 0 1/2 .42 .018 |
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AlM4 1/2 0 0 .005 |
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AlM5 0 0 0 .004 |
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SiT1 .3060 3/4 .1948 .0112 |
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SiT2 .2068 3/4 .8067 .0112 |
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SiT3 .1492 3/4 .4930 .0112 |
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O1 .251 .508 .498 .0054 |
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O2 .1898 .522 .1707 .0054 |
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O3 .3160 .514 .8243 .0054 |
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O4 .407 3/4 .0765 .0054 |
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O5 .457 3/4 .3586 .0054 |
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O6 .089 1/4 .9279 .0054 |
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O7 .442 1/4 .3632 .0054 |
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O8 .080 3/4 .8997 .0054 |
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O9 .076 3/4 .6357 .0054 |
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O10 -.026 3/4 .3549 .0054 |
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O11 .402 1/4 .0663 .0054 |
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H1 .145 1/4 .034 .01 |
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H2 .361 1/4 .263 .42 .01 |
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H3 -.107 3/4 .257 .01 |
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H4 .480 1/4 .166 .01 |
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Sursassite |
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Hatert F, Fransolet A M, Wouters J, Bernhardt H J |
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European Journal of Mineralogy 20 (2008) 993-998 |
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The crystal structure of sursassite from the Lienne Valley, |
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Stavelot Massif, Belgium |
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Locality: Lienne syncline, Stravelot Massif, Belgium |
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8.697 5.787 9.769 90 108.91 90 P2_1/m |
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atom x y z occ Uiso |
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MnMn1 .1675 .25 .3137 .79 .0147 |
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CaMn1 .1675 .25 .3137 .21 .0147 |
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Mn2 .2675 .25 .6750 .0187 |
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AlAl1 .5 0 .5 .89 .0116 |
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MnAl1 .5 0 .5 .11 .0116 |
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Al2 .5 0 0 .0098 |
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Al3 0 .5 0 .0084 |
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Si1 .3074 .75 .1925 .0088 |
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Si2 .2067 .75 .8076 .0091 |
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Si3 .1557 .75 .4937 .0114 |
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O1 .2646 .5134 .5019 .0145 |
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O2 .1912 .5237 .1643 .0106 |
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O3 .3139 .5168 .8333 .0128 |
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O4 .4149 .75 .0821 .0092 |
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O5 .4491 .75 .3538 .0117 |
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O6 .0843 .25 .9292 .5 .0113 |
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OH6 .0843 .25 .9292 .5 .0113 |
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O7 .4385 .25 .3672 .5 .0125 |
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OH7 .4385 .25 .3672 .5 .0125 |
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O8 .0712 .75 .8939 .0102 |
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O9 .0919 .75 .6372 .0104 |
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OH10 -.0085 .75 .3568 .0170 |
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OH11 .4108 .25 .0742 .0121 |
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| Download AMC data (View Text File)
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Sursassite |
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Mellini M, Merlino S, Pasero M |
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Physics and Chemistry of Minerals 10 (1984) 99-105 |
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X-ray and HRTEM study of sursassite: crystal structure, |
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stacking disorder, and sursassite-pumpellyite intergrowth |
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8.70 5.79 9.78 90 108.9 90 P2_1/m |
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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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Mn1 .1686 .25 .3143 .024 .010 .011 0 .002 0 |
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Mn2 .2684 .25 .6754 .034 .004 .006 0 .004 0 |
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Al1 .5 0 .5 .93 .013 .004 .005 .000 .002 .001 |
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Mn1 .5 0 .5 .07 .013 .004 .005 .000 .002 .001 |
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Al2 .5 0 0 .003 .002 .004 -.001 .002 .001 |
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Al3 0 .5 0 .9 .006 .004 .006 -.001 .001 -.001 |
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Mn3 0 .5 0 .1 .006 .004 .006 -.001 .001 -.001 |
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Si1 .3070 .75 .1919 .002 .003 .004 0 .001 0 |
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Si2 .2066 .75 .8078 .003 .002 .003 0 .001 0 |
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Si3 .1576 .75 .4941 .010 .004 .004 0 .004 0 |
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O1 .2664 .5146 .5024 .006 |
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O2 .1927 .5251 .1640 .005 |
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O3 .3138 .5164 .8340 .004 |
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O4 .4154 .75 .0822 .005 |
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O5 .4498 .75 .3555 .006 |
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O6 .0842 .25 .9315 .006 |
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O7 .4392 .25 .3683 .011 |
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O8 .0712 .75 .8949 .002 |
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O9 .0902 .75 .6359 .006 |
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O10 -.0055 .75 .3571 .008 |
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O11 .4133 .25 .0735 .005 |
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H1 .0765 .25 -.1370 .5 |
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H1' .0785 .25 .6434 .5 |
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H2 .3345 .25 .0863 .5 |
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H2' .1854 .25 -.0470 .5 |
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H3 .4423 .25 .2992 .5 |
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H3' .3401 .25 .1842 .5 |
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| Download AMC data (View Text File)
Download CIF data (View Text File)
Download diffraction data (View Text File)
View JMOL 3-D Structure
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