Orthoclase
Kimata M, Saito S, Shimizu M, Iida I, Matsui T
Neues Jahrbuch fur Mineralogie, Abhandlungen 171 (1996) 199-213
Low-temperature structures of orthoclase and sanidine
Note: T = 121 K
Locality: Itrongay, Madagascar
_database_code_amcsd 0020548
8.574 13.006 7.191 90 116.07 90 C2/m
atom     x     y     z  occ
K    .2841     0 .1375
SiT1 .0091 .1848 .2237 .648
AlT1 .0091 .1848 .2237 .352
SiT2 .7085 .1177 .3437 .852
AlT2 .7085 .1177 .3437 .148
Oa1      0 .1453     0
Oa2  .6372     0 .2842
Ob   .8267 .1466 .2261
Oc   .0341 .3115 .2584
Od   .1809 .1256 .4064