American Mineralogist Crystal Structure Database

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Sanidine
Download hom/sanidine.pdf
Viswanathan K, Brandt K
Download am/vol65/AM65_472.pdf
American Mineralogist 65 (1980) 472-476
The crystal structure of ternary (Ba,K,Na)-feldspar and its significance
Locality: Otjosondu, Namibia
_database_code_amcsd 0000781
8.516 13.023 7.206 90 115.9 90 C2/m
atom     x     y     z  occ B(1,1) B(2,2) B(3,3) B(1,2) B(1,3) B(2,3)
Si1  .0087 .1831 .2240 .705 0.0055 0.0014 0.0041 -.0005 0.0027 -.0003
Al1  .0087 .1831 .2240 .295 0.0055 0.0014 0.0041 -.0005 0.0027 -.0003
Si2  .7046 .1175 .3445 .705 0.0052 0.0012 0.0052 0.0000 0.0024 0.0001
Al2  .7046 .1175 .3445 .295 0.0052 0.0012 0.0052 0.0000 0.0024 0.0001
K    .2826     0 .1345 .590 0.0067 0.0033 0.0114      0 0.0031      0
Na   .2826     0 .1345 .220 0.0067 0.0033 0.0114      0 0.0031      0
Ba   .2826     0 .1345 .190 0.0067 0.0033 0.0114      0 0.0031      0
Oa1      0 .1429     0      0.0107 0.0023 0.0094      0 0.0055      0
Oa2  .6273     0 .2864      0.0093 0.0016 0.0109      0 0.0029      0
Ob   .8260 .1422 .2270      0.0089 0.0037 0.0120 -.0006 0.0064 0.0000
Oc   .0308 .3101 .2567      0.0081 0.0022 0.0100 -.0005 0.0038 -.0005
Od   .1841 .1254 .4045      0.0085 0.0024 0.0072 -.0003 0.0023 0.0004
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