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Roedderite |
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Alietti E, Brigatti M F, Capedri S, Poppi L |
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Mineralogical Magazine 58 (1994) 655-662 |
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The roedderite-chayesite series from Spanish lamproites: |
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crystal chemical characterization |
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Locality: Cancarix, Albacete province, Spain |
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_database_code_amcsd 0014513 |
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10.135 10.135 14.320 90 90 120 P6/mcc |
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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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KC 0 0 .25 .80 1.64 .005030 .005030 .002194 .002531 0 0 |
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NaC 0 0 .25 .20 1.64 .005030 .005030 .002194 .002531 0 0 |
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NaB 1/3 2/3 -.0188 .10 1.0 |
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MgA 1/3 2/3 .25 .86 .84 .002596 .002596 .001134 .001298 0 0 |
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Fe3+A 1/3 2/3 .25 .14 .84 .002596 .002596 .001134 .001298 0 0 |
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MgT2 .5 .5 .25 .86 .83 .001915 .005062 .000805 .002531 0 0 |
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Fe3+T2 .5 .5 .25 .14 .83 .001915 .005062 .000805 .002531 0 0 |
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SiT1 .23807 .35288 .39065 .80 .002726 .002986 .000878 .001590 .000099 .000139 |
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O1 .1299 .3943 0 1.66 .007302 .005874 .001097 .003245 0 0 |
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O2 .2197 .2777 .13325 1.50 .005062 .005744 .001902 .003602 .000080 .000099 |
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O3 .1552 .4967 .17230 1.10 .003375 .003667 .001341 .001720 -.000159 -.000358 |
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View JMOL 3-D Structure (permalink) |
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