AM_Hawthorneite Formula: Ba.85 K.12 Cr4.72 Fe3.54 Mg.72 Ti3.02 O19 Name: Hawthorneite Unit cell: 5.871 5.871 23.06 90.0 90.0 120.0 , V=688.36 Space group: P63/MMC (194)

Grey I E , Madsen I C , Haggerty S E , American Mineralogist , 72 (1987) p.633-636, Structure of a new upper-mantle, magnetoplumbite-type phase, Ba(Ti3Cr4Fe4Mg)O19