American Mineralogist Crystal Structure Database

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Vigezzite
Download hom/vigezzite.pdf
Giuseppetti G, Tadini P
 
Neues Jahrbuch fur Mineralogie, Monatshefte 1990 (1990) 301-308
The crystal structure of vigezzite, (Ca,Ce)(Nb,Ta,Ti)2O6,
intermediate term of the aeschynite series
Locality: Vigezzo Valley, Novara, Italy
_database_code_amcsd 0014844
11.065 7.527 5.343 90 90 90 Pnma
atom     x      y     z  occ Biso B(1,1) B(2,2) B(3,3) B(1,2) B(1,3) B(2,3)
CaA  .4565    .25 .0391  .75  .94  .0023  .0038  .0074      0 -.0001      0
CeA  .4565    .25 .0391  .25  .94  .0023  .0038  .0074      0 -.0001      0
NbB  .3587  .5061 .5382 .475  .95  .0016  .0052  .0076  .0002 -.0002  .0004
TaB  .3587  .5061 .5382 .315  .95  .0016  .0052  .0076  .0002 -.0002  .0004
TiB  .3587  .5061 .5382 .210  .95  .0016  .0052  .0076  .0002 -.0002  .0004
O1   .2875  .4390 .8722      1.09  .0019  .0058  .0092  .0001  .0009  .0001
O2   .5251  .4583 .7300      1.02  .0021  .0053  .0073  .0002  .0006  .0009
O3   .6223    .25 .3345      1.07  .0020  .0046  .0108      0  .0004      0
O4   .3545    .25 .4485      1.05  .0019  .0041  .0111      0 -.0003      0
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