AM_Lopezite Formula: Cr2 K2 O7 Name: Lopezite Unit cell: 7.3807 7.4593 13.391 96.205 98.033 90.914 , V=725.37 Space group: P-1 (2)

Weakley T J R , Ylvisaker E R , Yager R J , Stephens J E , Wiegel R D , Mengis M , Wu P , Photinos P , Abrahams S C , Acta Crystallographica, Section B , 60 (2004) p.705-715, Phase transitions in K2Cr3O7 and structural redetermination of phase II, Locality: synthetic, Sample: Crystal 1