AM_Witherite_19 Formula: Ba C O3 Name: Witherite Unit cell: 5.3322 8.931 6.6537 90.0 90.0 90.0 , V=316.86 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 = 606 C