1. n. [Drilling Fluids]
Chemical treatment or mechanical processes that improve a mineral or ore for its designed use. For example, barite and bentonite clay minerals are beneficiated in order to help them meet certain specifications for use in drilling fluids.

Garrett RL: "Quality Requirements for Industrial Minerals Used in Drilling Fluids," Mining Engineering 39, no. 11 (November 1987): 1011-1016.
Synonyms: beneficiate