Osumilite
Miyashiro A
American Mineralogist 41 (1956) 104-116
Osumilite, a new silicate mineral, and its crystal structure
_database_code_amcsd 0000078
10.17 10.17 14.34 90 90 120 P6/mcc
atom     x    y   z occ
K        0    0 .25 .32
Na       0    0 .25 .35
Ca       0    0 .25 .12
Mg     1/3  2/3 .25 .74
Fe1    1/3  2/3 .25 .26
Al      .5    0 .25 .65
Fe2     .5    0 .25 .35
Si    .100 .350 .11 .75
Al    .100 .350 .11 .25
O1    .130 .420   0
O2    .210 .290 .12
O3    .130 .470 .17
H2O      0    0   0