Jadeite
Prewitt C T, Burnham C W
American Mineralogist 51 (1966) 956-975
The crystal structure of jadeite, NaAlSi2O6
_database_code_amcsd 0000147
9.418 8.562 5.219 90 107.58 90 C2/c
atom     x     y     z B(1,1) B(2,2) B(3,3) B(1,2) B(1,3) B(2,3)
Na       0 .3009   1/4  .0035  .0026  .0074      0 -.0002      0
Al       0 .0940   3/4  .0013  .0015  .0035      0  .0005      0
Si   .2906 .0934 .2277  .0011  .0017  .0036  .0000  .0006 -.0001
O1   .1090 .0763 .1275  .0004  .0020  .0032 -.0004  .0000 -.0007
O2   .3608 .2630 .2929  .0010  .0020  .0047 -.0004  .0000  .0002
O3   .3533 .0070 .0058  .0013  .0022  .0041 -.0003  .0009  .0000