Er2 O3
Zachariasen W
Norsk Geologisk Tidsskrift 9 (1927) 310-316
The crystal structure of the modification C of the sesquioxides of the
rare earth metals, and of indium and thallium.
_cod_database_code 1010334
_database_code_amcsd 0017260
10.54 10.54 10.54 90 90 90 I2_13
atom    x    y    z
Er1   .25  .25  .25
Er2  .021    0  .25
Er3  .542    0  .25
O1   .125 .135 .395
O2     .1 .358 .373