Barite
Barite is a mineral made up of barium sulfate (BaSO4). It has a Mohs hardness of 3 to 3.5 and a specific gravity of 4.3 to 5 and comes in various colors, including colorless, white, blue, brown, yellow, and red. Due to its relative softness, the mineral is simple to powderize. Barite is safe for many...