Orthoclase
Chao S, Hargreaves A, Taylor W
Mineralogical Magazine 25 (1940) 498-512
The structure of orthoclase.
_cod_database_code 1011205
_database_code_amcsd 0018075
8.6 13.02 7.22 90 116.05 90 C2/m
atom     x     y     z occ
K1   .2917     0 .1389
Si1  .7097 .1167  .347
Al2  .0097 .1875  .225  .5
Si2  .0097 .1875  .225  .5
O1       0 .1528     0
O2   .6667     0 .3028
O3   .8194 .1528 .2278
O4   .0417 .3167 .2611
O5   .1722 .1278 .4167