AM_KMg30Cu70F3 Formula: K (Cu.7 Mg.3) F3 Name: KMg.30Cu.70F3 Unit cell: 5.8018 5.8018 7.9006 90.0 90.0 90.0 , V=265.94 Space group: I4/MCM (140)

Burns P C , Hawthorne F C , Hofmeister A M , Moret S L , Physics and Chemistry of Minerals , 23 (1996) p.141-150, A structural phase-transition in K(Mg1-xCux)F3 perovskite, Sample: x = 0.700