Muscovite-2M1
Brigatti M F, Frigieri P, Poppi L
American Mineralogist 83 (1998) 775-785
Crystal chemistry of Mg-, Fe-bearing muscovites-2M1
Sample RA1 from a pegmatite on Antarctica
_database_code_amcsd 0002014
5.182 8.982 20.002 90 95.72 90 C2/c
atom     x      y      z occ B(1,1) B(2,2) B(3,3)  B(1,2) B(1,3)  B(2,3)
K        0  .0982    .25 .92  .0203  .0073 .00166       0 .00045       0
Na       0  .0982    .25 .08  .0203  .0073 .00166       0 .00045       0
Si1  .4513 .25857 .13560 .80  .0076 .00299 .00105 -.00023 .00016  .00000
Al1  .4513 .25857 .13560 .20  .0076 .00299 .00105 -.00023 .00016  .00000
Si2  .9649 .42962 .13554 .80  .0074 .00223 .00110  .00006 .00028  .00001
Al2  .9649 .42962 .13554 .20  .0074 .00223 .00110  .00006 .00028  .00001
Ti2  .2496 .08332 .00005 .02  .0089 .00322 .00112 -.00025 .00018  .00007
Fe2  .2496 .08332 .00005 .06  .0089 .00322 .00112 -.00025 .00018  .00007
Mg2  .2496 .08332 .00005 .03  .0089 .00322 .00112 -.00025 .00018  .00007
Al2  .2496 .08332 .00005 .89  .0089 .00322 .00112 -.00025 .00018  .00007
Al1    .75    .25      0 .07
O11  .7502  .3103 .15785      .0122  .0043 .00148  -.0022  .0001  .00047
O21  .2495  .3700 .16908      .0128  .0048 .00123   .0011  .0000 -.00008
O22  .4170  .0935 .16837      .0162  .0034 .00144  -.0010  .0008  .00007
O31  .3851  .2519 .05348      .0094  .0041 .00120  -.0001  .0002  .00009
O32  .9622  .4443 .05363      .0101  .0037 .00122   .0003  .0001  .00009
O4   .9569  .0617 .05025      .0075  .0033 .00134  -.0008  .0006 -.00018