Barium, Sulphate of

BaSO 4 . Syn. Sulphate of baryta , Heav′y spar , Bolo′′gnian s. , Cawk (mi); Bary′tæ sul′phas (Ph. E. & D.), Spa′thium pondero′sum , ., L.; Sulfate de baryte , Spath pesant , ., Fr.; Schwefelsaures baryt , Schwerspath , ., Ger. This salt is found native, often in beautiful tabular crystals, but more frequently in white or reddish-white ma es. It is also occasionally prepared artificially, as a pigment and chemical, by decomposing a solution of chloride of barium with dilute sulphuric acid, or with a solution of sulphate of sodium; the resulting precipitate being collected, well washed, and dried.