Barium Carbonate Powder

    
Barium carbonate (BaCO3), also known as witherite, is a chemical compound used in bricks, ceramic glazes and cement. Witherite crystallizes in the orthorhombic system.

The crystals are invariably twinned together in groups of three, giving rise to pseudo-hexagonal forms somewhat resembling bipyramidal crystals of quartz, the faces are usually rough and striated horizontally.