Sanidine
Brown G E, Hamilton W C, Prewitt C T, Sueno S
The Feldspars: Proceedings of a NATO Advanced Study Institute  (1974) 68-80
Neutron diffraction study of Al/Si ordering in sanidine: a comparison with
X-ray diffraction data
Locality: Laacher See, Eifel District, Germany
_database_code_amcsd 0020556
8.539 13.015 7.179 90 115.99 90 C2/m
atom      x     y     z  occ Biso B(1,1) B(2,2) B(3,3) B(1,2) B(1,3) B(2,3)
KM    .2837     0 .1369  .85 2.10  .0062  .0050  .0156      0  .0030      0
NaM   .2837     0 .1369  .15 2.10  .0062  .0050  .0156      0  .0030      0
SiT1s .0097 .1843 .2238 .685  .70  .0032  .0014  .0033 -.0004  .0014 -.0001
AlT1a .0097 .1843 .2238 .315  .70  .0032  .0014  .0033 -.0004  .0014 -.0001
SiT2s .7075 .1178 .3442 .815  .63  .0033  .0010  .0041 -.0001  .0012  .0000
AlT2a .7075 .1178 .3442 .185  .63  .0033  .0010  .0041 -.0001  .0012  .0000
Oa1       0 .1459     0      1.53  .0082  .0023  .0072      0  .0040      0
Oa2   .6334     0 .2848      1.36  .0064  .0014  .0097      0  .0013      0
Ob    .8277 .1452 .2264      1.91  .0063  .0036  .0124 -.0009  .0056  .0001
Oc    .0335 .3100 .2575      1.34  .0051  .0018  .0098 -.0004  .0020 -.0005
Od    .1813 .1262 .4044      1.46  .0063  .0024  .0051  .0005  .0008  .0003