Tarapacaite
Zachariasen W, Ziegler G
Zeitschrift fur Kristallographie 80 (1931) 164-173
The crystal structure of potassium chromate K2 Cr O4
_cod_database_code 1011186
_database_code_amcsd 0018061
5.92 10.4 7.61 90 90 90 Pmcn
atom    x     y     z
K1    .25  .083  .355
K2    .25 -.306    .5
Cr1   .25  .083 -.231
O1    .25  .083 -.019
O2    .25 -.061   -.3
O3   .028  .156   -.3