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: CSr, SrMg2Al6Si9O30
_database_code_amcsd 0006586
10.1273 10.1273 14.2274 90 90 120 P6/mcc
atom     x     y     z  occ Biso
SrC      0     0   1/4  .91  3.5
MgA    1/3   2/3   1/4       .34
SiT1 .1043 .3498 .1097 .765  .68
AlT1 .1043 .3498 .1097 .235  .68
AlT2   1/2   1/2   1/4       .48
O1   .1195 .3965     0      1.73
O2   .2120 .2795 .1365      2.71
O3   .1377 .4926 .1772      1.16