American Mineralogist Crystal Structure Database

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Alum-(K)
Download hom/alumk.pdf
Nyburg S C, Steed J, Aleksovska S, Petrusevski V M
Acta Crystallographica B56 (2000) 204-209
Structure of the alums. I. On the sulfate group disorder in the alpha-alums
Locality: synthetic
Sample: T = 296 K
_database_code_amcsd 0009911
12.1640 12.1640 12.1640 90 90 90 Pa3
atom      x      y       z  occ  Uiso U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3)
K        .5     .5      .5      .0492  .0492  .0492  .0492  .0104  .0104  .0104
Al        0      0       0      .0208  .0208  .0208  .0208 -.0004 -.0004 -.0004
S    .30764 .30764  .30764      .0265  .0265  .0265  .0265  .0037  .0034  .0037
O3   .23898 .23898  .23898 .697 .0633  .0633  .0633  .0633 -.0121 -.0121 -.0121
O3A   .3749  .3749   .3749 .303 .0820   .082   .082   .082  -.028  -.028  -.028
O4    .2648 .42078  .30973 .697 .0479  .0620  .0378   .044  .0213  .0212  .0115
O4A   .2853  .2042   .3643 .303 .0501   .048   .037   .066   .012   .023   .027
O1   .15176 .01980 -.01855      .0308  .0237  .0385  .0303 -.0046  .0013  .0013
O2   .04633 .13357  .30258      .0417  .0443  .0396  .0413  .0008 -.0050 -.0052
H11   .1752  .0350  -.0683       .044
H12    .198   .025    .038       .061
H21    .104   .160    .299       .077
H22    .008   .184    .290       .060
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