Melilite
Bindi L, Bonazzi P
Physics and Chemistry of Minerals 32 (2005) 89-96
Incommensurate-normal phase transition in natural melilite:
an in situ high-temperature X-ray single-crystal study
Sample: San Venanzo, Italy; T = 463 K
Note: xO1 and yO1 corrected by authors
_database_code_amcsd 0008958
7.845 7.845 5.011 90 90 90 P-42_1m
atom     x     y     z  occ  Uiso
CaX  .3321 .1679 .5058 .935 .0380
NaX  .3321 .1679 .5058  .05 .0380
SrX  .3321 .1679 .5058  .01 .0380
KX   .3321 .1679 .5058  .01 .0380
MgT1     0     0     0  .96 .0290
AlT1     0     0     0  .07 .0290
SiT2 .1397 .3603 .9350  .99 .0276
AlT2 .1397 .3603 .9350  .01 .0276
O1      .5     0 .1787      .0381
O2   .1405 .3595 .2550      .0422
O3   .0811 .1873 .7863      .0404