Osumilite
Winter W, Armbruster T, Lengauer C
European Journal of Mineralogy 7 (1995) 277-286
Crystal structure refinement of synthetic osumilite-type
phases: BaMg2Al6Si9O30, SrMg2Al6Si9O30 and Mg2Al4Si11O30
Sample: CBa, BaMg2Al6Si9O30
_database_code_amcsd 0006585
10.129 10.129 14.340 90 90 120 P6/mcc
atom      x      y      z occ  Biso U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3)
BaC       0      0    1/4     1.847  .0238  .0238  .0225 .01191  .0000  .0000
MgA     1/3    2/3    1/4       .53  .0062  .0062  .0078  .0031  .0000  .0000
SiT1 .10461 .35270 .10916 .75  .629  .0081  .0101  .0060  .0048  .0001 -.0010
AlT1 .10461 .35270 .10916 .25  .629  .0081  .0101  .0060  .0048  .0001 -.0010
AlT2    1/2    1/2    1/4       .53  .0086  .0086  .0054  .0063  .0000  .0000
O1    .1205  .4016      0      1.41   .026   .019  .0077   .010  .0000  .0000
O2    .2134  .2807  .1367      1.86  .0273   .036  .0200  .0255 -.0001 -.0033
O3    .1386  .4951 .17939       .90  .0120  .0137  .0099  .0075 -.0015 -.0033