Pinakiolite
Moore P B, Araki T
American Mineralogist 59 (1974) 985-1004
Pinakiolite, Mg2MnO2[BO3]; warwickite, Mg(Mg0.5Ti0.5)O[BO3]; wightmanite,
Mg5(O)(OH)5[BO3].nH2O: Crystal chemistry of complex 3 Angstrom wallpaper
structures
Locality: Langban, Sweden
_database_code_amcsd 0000416
21.79 5.977 5.341 90 95.83 90 C2/m
atom     x     y      z occ Biso
Mn1     .5    .5      0      .73
Mn2     .5    .5     .5      .70
Mn3  .2503     0  .4993      .57
Mg1     .5     0      0 .83 1.95
Mg2     .5     0     .5 .77 2.06
Mg3    .25   .25      0 .84  .60
Mn3    .25   .25      0 .16  .60
Mg4  .3869 .2497  .7072 .99  .64
Fe4  .3869 .2497  .7072 .01  .64
B1   .1344     0  .8055      .57
B2   .3692     0  .1986      .85
O1   .3972    .5 -.0162      .73
O2   .3959    .5  .4344      .65
O3   .1908     0  .8332      .74
O4   .4014     0 -.0166     1.02
O5   .4002     0  .4397      .94
O6   .3058     0  .1713      .89
O7   .5138 .2755  .2556      .92
O8   .2937 .2502  .6775      .76