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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 0014510 |
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10.124 10.124 14.305 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 .89 2.10 .006439 .006439 .002859 .003220 0 0 |
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NaC 0 0 .25 .11 2.10 .006439 .006439 .002859 .003220 0 0 |
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NaB 1/3 2/3 -.0202 .11 1.7 |
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MgA 1/3 2/3 .25 .87 1.03 .003090 .003090 .001442 .001561 0 0 |
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Fe3+A 1/3 2/3 .25 .13 1.03 .003090 .003090 .001442 .001561 0 0 |
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MgT2 .5 .5 .25 .87 1.10 .002537 .005594 .001368 .002797 0 0 |
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Fe3+T2 .5 .5 .25 .13 1.10 .002537 .005594 .001368 .002797 0 0 |
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SiT1 .23814 .35274 .39066 0.99 .003057 .003317 .001332 .001724 .000080 .000120 |
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O1 .1299 .3945 0 1.91 .007643 .006277 .001674 .003317 0 0 |
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O2 .2193 .2776 .13327 1.73 .005431 .006374 .002382 .003935 -.000080 .000040 |
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O3 .1550 .4966 .17245 1.34 .004000 .004358 .001771 .002081 -.000159 -.000379 |
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View JMOL 3-D Structure (permalink) |
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