Sentence Examples with the word heavy spar

Barium chloride, BaCl 2.2H 2 O, can be obtained by dissolving witherite in dilute hydrochloric acid, and also from heavy spar by ignition in a reverberatory furnace with a mixture of coal, limestone and calcium chloride, the barium chloride being extracted from the fused mass by water, leaving a residue of insoluble calcium sulphide.

It takes its name from the Greek f3apvs (heavy) on account of its presence in barytes or heavy spar which was first investigated in 1602 by V.