Muscovite-2M1
Brigatti M F, Frigieri P, Poppi L
American Mineralogist 83 (1998) 775-785
Crystal chemistry of Mg-, Fe-bearing muscovites-2M1
Sample GA1 from a pegmatite on Maddalena Island, Italy
_database_code_amcsd 0002013
5.226 9.074 20.039 90 95.74 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  .0962    .25 .99  .0160 .00606 .00114      0  .00024       0
Na       0  .0962    .25 .01  .0160 .00606 .00114      0  .00024       0
Si1  .4527 .25782 .13538 .83  .0042 .00186 .00039 .00030 -.00005  .00003
Al1  .4527 .25782 .13538 .17  .0042 .00186 .00039 .00030 -.00005  .00003
Si2  .9642 .42858 .13538 .83  .0047 .00159 .00037 .00000  .00006  .00007
Al2  .9642 .42858 .13538 .17  .0047 .00159 .00037 .00000  .00006  .00007
Fe2  .2497 .08323 .00002 .15  .0056 .00218 .00047 .00009  .00004 .000009
Mn2  .2497 .08323 .00002 .03  .0056 .00218 .00047 .00009  .00004 .000009
Al2  .2497 .08323 .00002 .82  .0056 .00218 .00047 .00009  .00004 .000009
Al1    .75    .25      0 .05
H     .876   .143   .046 .15
O11  .7402  .3211 .15966      .0096  .0057 .00084 -.0027  -.0002  .00033
O21  .2410  .3611 .16867      .0105  .0052 .00072  .0031   .0001 -.00009
O22  .4344  .0927 .16815      .0161  .0028 .00074  .0006   .0001  .00001
O31  .3924  .2514 .05367      .0094  .0041 .00044  .0003  .00008  .00023
O32  .9572  .4398 .05377      .0106  .0041 .00046 -.0002   .0001  .00012
O4   .9549  .0646 .05098 .98  .0149  .0040 .00049  .0019   .0004 -.00024
F4   .9549  .0646 .05098 .02  .0149  .0040 .00049  .0019   .0004 -.00024