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American Mineralogist Crystal Structure Database

1 matching records for this search.

Roedderite
Download hom/roedderite.pdf 
Alietti E, Brigatti M F, Capedri S, Poppi L
Mineralogical Magazine 58 (1994) 655-662
The roedderite-chayesite series from Spanish lamproites:
crystal chemical characterization
Locality: Cancarix, Albacete province, Spain
_database_code_amcsd 0014514
10.126 10.126 14.326 90 90 120 P6/mcc
atom        x      y      z occ Biso  B(1,1)  B(2,2)  B(3,3)  B(1,2)   B(1,3)   B(2,3)
KC          0      0    .25 .80 1.61 .005006 .005006 .002144 .002503        0        0
NaC         0      0    .25 .20 1.61 .005006 .005006 .002144 .002503        0        0
NaB       1/3    2/3 -.0190 .11  1.5
MgA       1/3    2/3    .25 .85 0.76 .002308 .002308 .001035 .001170        0        0
Fe3+A     1/3    2/3    .25 .15 0.76 .002308 .002308 .001035 .001170        0        0
MgT2       .5     .5    .25 .85 0.85 .001918 .005104 .000877 .002536        0        0
Fe3+T2     .5     .5    .25 .15 0.85 .001918 .005104 .000877 .002536        0        0
SiT1   .23814 .35284 .39067     0.77 .002568 .002828 .000877 .001495  .000099  .000139
O1      .1299  .3943      0     1.61 .006957 .005624 .001157 .003121        0        0
O2      .2197  .2778 .13331     1.46 .004681 .005657 .001973 .003576 -.000020  .000040
O3      .1551  .4967 .17248     1.07 .003381 .003478 .001328 .001723 -.000199 -.000458


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