About Barite:
The name barite is derived from the Greek word βαρύς (heavy). In commerce, the mineral is sometimes referred to as "barytes."
Most crude barite requires some upgrading to minimum purity or density. Barite that is used as an aggregate in a "heavy" cement is crushed and screened to a uniform size. Most barite is ground to a small, uniform size before it is used as a filler or extender, an addition to industrial products, or a weighting agent in petroleum well drilling mud.
Barite is used in the manufacture of paints and paper. Although barite contains a "heavy" metal (barium), it is not considered to be a toxic chemical by most governments because of its extremeinsolubility. (source: Wikipedia)