Cervandonite-(Ce)
Demartin F, Gramaccioli C M, Graeser S
The Canadian Mineralogist 46 (2008) 423-430
The crystal structure of cervandonite-(Ce), an interesting example of
As3+ - Si diadochy
Locality: Alpine fissures at Pizzo Cervandone, Scherbadung, Central Alps
Note: Chemistry from original description of the mineral.
_database_code_amcsd 0006185
6.508 6.508 18.520 90 90 120 R3m
atom x y z occ Uiso U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3)
Ce 0 0 0 .44 .0203 .0225 .0225 .0159 .0113 0 0
Nd 0 0 0 .22 .0203 .0225 .0225 .0159 .0113 0 0
La 0 0 0 .21 .0203 .0225 .0225 .0159 .0113 0 0
Th 0 0 0 .06 .0203 .0225 .0225 .0159 .0113 0 0
Y 0 0 0 .03 .0203 .0225 .0225 .0159 .0113 0 0
U 0 0 0 .02 .0203 .0225 .0225 .0159 .0113 0 0
Ca 0 0 0 .02 .0203 .0225 .0225 .0159 .0113 0 0
Fe3+ .1682 .3365 -.1661 .417 .0309 .0286 .0585 .0157 .0292 .0020 .0040
Fe2+ .1682 .3365 -.1661 .140 .0309 .0286 .0585 .0157 .0292 .0020 .0040
Ti .1682 .3365 -.1661 .313 .0309 .0286 .0585 .0157 .0292 .0020 .0040
Al .1682 .3365 -.1661 .127 .0309 .0286 .0585 .0157 .0292 .0020 .0040
Sn .1682 .3365 -.1661 .003 .0309 .0286 .0585 .0157 .0292 .0020 .0040
As1 1/3 2/3 .3470 .58 .0183 .0232 .0232 .0084 .0116 0 0
As2 1/3 2/3 -.0156 .58 .0311 .0400 .0400 .0133 .0200 0 0
Si1 1/3 2/3 .3698 .42 .0291
Si2 1/3 2/3 .1928 .42 .0188
Si3 1/3 2/3 .1424 .42 .0188
Si4 1/3 2/3 -.0355 .42 .0291
O1 0 0 -.1404 .0710
O2 0 0 .1400 .0720
O3 .2024 .4048 .1673 .0291
O4 .0608 .5304 .3926 .0349
O5 .1926 .3853 -.0638 .0237
O6 1/3 2/3 .2824 .0380
O7 1/3 2/3 .0532 .0230
Download AMC data (View Text File )Download CIF data (View Text File )Download diffraction data (View Text File )View JMOL 3-D Structure (permalink )
Multiple datasets can be concatenated into a single downloadable file by selecting the datasets and then clicking
Multiple datasets can be downloaded as individual files inside a ZIP archive by selecting the datasets and then clicking
Total number of retrieved datasets: 