... -made 3. good service 4. free sample available Barite PowderBarite, barytes barium or heavy spar, a white, yellow, blue, red, or ... to make a thixotropic mud for sealing oil wells during drilling. Prime white, a bleached barite, is used as a pigment ... mixture of barium sulfate, zinc sulfide, and zinc oxide. 1. Drilling Grade BaSO4: 90% Min. Hg: 1 PPM Max. CD: 3 ...