9.—Baryta, or Heavy Spar.
Occurs in crystals, plates and masses; powder white; brittle; crackles when strongly heated; not dissolved in acids; easily distinguished by its weight; gravity 4.5, or twice as heavy as Gypsum.
Value.—Used extensively as white paint and in pottery.
Localities.—Found in mining districts, often with lead, copper and iron ores, and in limestone. Piermont, N. H.; Hatfield, Southampton and Leverett, Mass.; Cheshire and Berlin, Conn.; Pillar Point, Rossie, Carlisle, Scoharie, De Kalb, Gouverneur, N. Y.; Fauquier and Buckingham Counties, Va.; Union, Gaston and Orange Counties, N. C.; near Paris, and in Anderson, Fayette, Mercer and Owen Counties, Ky.; on Brown’s Creek and Haysboro, Tenn.; Bainbridge, O.; Scales Mound, Ill.; Prince Vein, Lake Superior; Mine-a-Barton, Mo.; near Fort Wallace, N. M.; Ingo County, Cal.