Al4B2O9
Fischer R X, Kahlenberg V, Voll D, MacKenzie K J D, Smith M E, Schnetger B,
Brumsack H-J, Schneider H
American Mineralogist 93 (2008) 918-927
Crystal structure of synthetic Al4B2O9: A member of the mullite family closely
related to boralsilite
_database_code_amcsd 0004586
14.8056 5.5413 15.0531 90 90.913 90 C2/m
atom     x     y     z occ Biso
Al1  .8631     0 .3409      .43
Al2  .8147     0 .1622      .43
Al3  .5696     0 .0675      .43
Al4  .6739     0 .3439      .43
Al5  .0002 .7471 .2480      .43
Al6    .25   .25     0      .43
Al7    .25   .25    .5      .43
B1   .1026     0 .1053       .4
B2   .3789     0 .1382       .4
B3   .1352     0 .3662       .4
B4   .3896     0 .4005       .4
O1   .7563     0 .2561      .73
O2   .7979     0 .4445      .73
O3   .9245     0 .2152      .73
O4   .9226 .7157 .3536      .73
O5'  .0332     0 .4376  .5  .73
O6   .3221     0 .4562      .73
O7   .8261 .7183 .0993      .73
O8   .6967     0 .0682      .73
O9   .0663 .7711 .1310      .73
O10  .4300     0 .0474  .5  .73
O11  .6734 .2852 .3953      .73
O12  .5766     0 .2751      .73
O13  .4362     0 .1981      .73
O14  .0659     0 .2919      .73
O15  .8242     0 .9558      .73