Muscovite
Guven N
Zeitschrift fur Kristallographie 134 (1971) 196-212
The crystal structures of 2M1 phengite and 2M1 muscovite
Note: sample 2M1 phengite
Locality: Tiburon Peninsula, California, USA
_database_code_amcsd 0019601
5.2112 9.0383 19.9473 90 95.769 90 C2/c
atom     x     y     z  occ Biso
K        0 .0964   .25  .87 1.76
Na       0 .0964   .25  .07 1.76
Ba       0 .0964   .25  .01 1.76
Ca       0 .0964   .25  .02 1.76
Al   .2467 .0825 .0001 .715  .74
Mg   .2467 .0825 .0001  .25  .74
Ti   .2467 .0825 .0001 .005  .74
Fe   .2467 .0825 .0001  .07  .74
AlT1 .9632 .4297 .1355 .152   .6
SiT1 .9632 .4297 .1355 .848   .6
AlT2 .4525 .2581 .1354 .152   .6
SiT2 .4525 .2581 .1354 .848   .6
Oa   .9568 .4396 .0544      1.03
Ob   .3933 .2496 .0537      1.07
Oc   .4426 .0931 .1678      1.30
Od   .7372 .3257 .1601      1.41
Oe   .2326 .3574 .1682      1.23
OH   .9531 .0656 .0526      1.21