Peprossiite-(Ce)
Callegari A, Caucia F, Mazzi F, Oberti R, Ottolini L, Ungaretti L
American Mineralogist 85 (2000) 586-593
The crystal structure of peprossiite-(Ce), and anhydrous REE and Al mica-like
borate with square-pyramidal coordination for Al
Sample: Pep2
_database_code_amcsd 0002425
4.596 4.596 9.309 90 90 120 P-62m
atom     x      y     z  occ U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3)
LaM2     0      0     0 .785  .0084  .0084  .0086  .0042      0      0
ThM2     0      0     0 .215  .0084  .0084  .0086  .0042      0      0
AlM1 .3889      0    .5  2/3  .0056  .0044  .0096  .0022      0      0
BT     1/3    2/3 .2196       .0052  .0052  .0082  .0026      0      0
O1     1/3    2/3 .3744       .0090  .0090  .0078  .0045      0      0
O2   .4180      0 .1592       .0101  .0034  .0149  .0017 -.0020      0
O3       0      0    .5  2/3  .0030  .0030  .0141  .0015      0      0