Loparite-(Ce)
Mitchell R H, Burns P C, Chakhmouradian A R
The Canadian Mineralogist 38 (2000) 145-152
The crystal structures of loparite-(Ce)
Sample: Loparite K
Locality: Khibina complex, Russia
_database_code_amcsd 0005639
5.5108 5.5084 7.7964 90 90 90 Pbnm
atom x y z occ Uiso U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3)
Na -.0034 .5003 .25 .54 .0179
La -.0034 .5003 .25 .09 .0179
Ce -.0034 .5003 .25 .17 .0179
Pr -.0034 .5003 .25 .01 .0179
Nd -.0034 .5003 .25 .03 .0179
Ca -.0034 .5003 .25 .09 .0179
Sr -.0034 .5003 .25 .04 .0179
Ti 0 0 0 .76 .0117 .0097 .0142 .0112 .0019 0 -.0013
Nb 0 0 0 .23 .0117 .0097 .0142 .0112 .0019 0 -.0013
Ta 0 0 0 .01 .0117 .0097 .0142 .0112 .0019 0 -.0013
O1 .0508 -.0016 .25 .0344 .0242 .0622 .0166 -.0033 0 0
O2 .2428 .2510 -.0181 .0597 .0610 .0530 .0652 -.0435 -.0049 .0149
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Loparite-(Ce)
Mitchell R H, Burns P C, Chakhmouradian A R
The Canadian Mineralogist 38 (2000) 145-152
The crystal structures of loparite-(Ce)
Sample: Loparite L
Locality: Lovozero complex, Russia
_database_code_amcsd 0005640
5.5022 5.5084 7.7767 90 90 90 I4/mcm
atom x y z occ Uiso U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3)
Na 0 .5 .25 .46 .0197 .0196 .0196 .0200 0 0 0
La 0 .5 .25 .09 .0197 .0196 .0196 .0200 0 0 0
Ce 0 .5 .25 .18 .0197 .0196 .0196 .0200 0 0 0
Pr 0 .5 .25 .02 .0197 .0196 .0196 .0200 0 0 0
Nd 0 .5 .25 .05 .0197 .0196 .0196 .0200 0 0 0
Ca 0 .5 .25 .13 .0197 .0196 .0196 .0200 0 0 0
Sr 0 .5 .25 .05 .0197 .0196 .0196 .0200 0 0 0
Ti 0 0 0 .87 .0122 .0127 .0127 .0113 0 0 0
Nb 0 0 0 .13 .0122 .0127 .0127 .0113 0 0 0
O1 0 0 .25 .0641 .0856 .0856 .0210 0 0 0
O2 .2828 .7828 0 .0438 .0261 .0261 .0792 .0053 0 0
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Loparite-(Ce)
Mitchell R H, Burns P C, Chakhmouradian A R
The Canadian Mineralogist 38 (2000) 145-152
The crystal structures of loparite-(Ce)
Sample: Loparite BM
Locality: Bearpaw Mountains, Montana, USA
_database_code_amcsd 0005641
5.5076 5.5076 7.7767 90 90 90 I4/mcm
atom x y z occ Uiso U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3)
Na 0 .5 .25 .31 .0136 .0146 .0146 .0114 0 0 0
La 0 .5 .25 .10 .0136 .0146 .0146 .0114 0 0 0
Ce 0 .5 .25 .15 .0136 .0146 .0146 .0114 0 0 0
Nd 0 .5 .25 .03 .0136 .0146 .0146 .0114 0 0 0
Ca 0 .5 .25 .07 .0136 .0146 .0146 .0114 0 0 0
Sr 0 .5 .25 .30 .0136 .0146 .0146 .0114 0 0 0
Th 0 .5 .25 .01 .0136 .0146 .0146 .0114 0 0 0
Ti 0 0 0 .94 .0073 .0075 .0075 .0067 0 0 0
Nb 0 0 0 .05 .0073 .0075 .0075 .0067 0 0 0
O1 0 0 .25 .0404 .0554 .0554 .0106 0 0 0
O2 .2684 .7684 0 .0273 .0169 .0169 .0480 .0019 0 0
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Loparite-(Ce)
Gaertner H
Neues Jahrbuch fur Mineralogie, Geologie und Palaeontologie. Beilage 61 (1930) 1-30
Die Kristallstrukturen von Loparit und Pyrochlor
_cod_database_code 1011000
_database_code_amcsd 0017915
3.854 3.854 3.854 90 90 90 Pm3m
atom x y z occ
Na1 0 0 0 .5
Ce1 0 0 0 .3
Ca1 0 0 0 .2
Ti1 .5 .5 .5 .8
Nb1 .5 .5 .5 .2
O1 .5 .5 0
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