Chromatite Clouse J Zeitschrift fur Kristallographie 83 (1932) 161-171 Investigations on the X-Ray Crystal Structures of Ca Cr O4, Ca Cr O4 * H2 O and Ca Cr O4 * (H2 O)2 _cod_database_code 1010939 _database_code_amcsd 0017660 7.25 7.25 6.34 90 90 90 I4_1/amd atom x y z Ca1 0 0 0 Cr1 0 0 .5 O1 0 .17 .34