AM_Witherite_21 Formula: Ba C O3 Name: Witherite Unit cell: 5.3337 8.9361 6.6949 90.0 90.0 90.0 , V=319.10 Space group: PMCN (62)

Antao S M , Hassan I , Physics and Chemistry of Minerals , 34 (2007) p.573-580, BaCO3: high-temperature crystal structures and the Pmcn --> R3m phase, transition at 811 C, Locality: synthetic, Sample: T = 708 C