Feldspar
Grundy H D, Ito J
American Mineralogist 59 (1974) 1319-1326
The refinement of the crystal structure of a synthetic non-stoichiometric Sr
feldspar
_database_code_amcsd 0000436
8.3282 12.9801 7.1358 90 115.599 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   .0054 .1772 .2237 .52 .00395 .00122 .00339 -.00069 .00196 -.00015
Al1   .0054 .1772 .2237 .48 .00395 .00122 .00339 -.00069 .00196 -.00015
Si2   .6908 .1166 .3414 .61 .00387 .00093 .00381 -.00001 .00132 -.00018
Al2   .6908 .1166 .3414 .39 .00387 .00093 .00381 -.00001 .00132 -.00018
Sr    .2696     0 .1306 .84 .00610 .00403 .01046       0 .00186       0
Na    .2696     0 .1306 .03 .00610 .00403 .01046       0 .00186       0
OA(1)     0 .1329     0     .00739 .00159 .00560       0 .00415       0
OA(2) .5951     0 .2843     .00322 .00075 .00966       0 .00017       0
OB    .8201 .1298 .2212     .00732 .00216 .01108 -.00005 .00526  .00112
OC    .0193 .3052 .2518     .00665 .00170 .00999 -.00039 .00350  .00005
OD    .1907 .1227 .4025     .00661 .00296 .00660  .00007 .00181  .00069