barite, baryt, baryte, barytine, barytite, barytes

[ Barite is from Gr. βαρύς ( bar us ) = heavy; barytes from Gr. βαρύτης ( barutēs ) = weight, heavine ; baryt, barytine, and barytite from the same subst., the last two with suffixes-ine and -ite respec tively. In Ger. baryt ; Fr. baryte .] [BARIUM, BARYTA.] A mineral, called also Bar ose lenite, Sulphate of Baryta, Heavy Spar, and by the Derby shire miners Cauk, Calk, or Cawk. It is placed by Dana in his Celestite group. It is orthorhombic, and has usually tabular crystals, or is globular, fibrous, lamellar, or granular. Its hardne is 25-35; spec. gr. as much as 43-472, whence the name Heavy-Spar; its lustre vitreous or slightly resinous; its colour white, yellowish, grayish black, reddish or dark brown. It is sometimes transparent, sometimes almost opaque. When rubbed it is occasionally fetid. composition is Sulphuric acid, 34-3; baryta (monoxide of barium), 657 = 100, whence the name Sulphate of Baryta. It is found as part of the gangue of metallic ores in veins in secondary limestones, . It occurs, among other places in England, in West more land, Durham, Derby shire, Staff ords hire, and Cornwall; in Scotland, in Argyles hire, Perth shire, and Aberdeen shire; in many places on the Continent of Europe, in America, and other parts of the world. Its Dana thus subdivides Barite: -Var. 1.: (a) Ordinary, (b) created, (c) columnar, (d) concretionary, (e) lamellar, (f) granular, (g) compact or cryptocrystalline, (h) earthy, (i) stalactitic and stalagmitic. Bologna stone is included under (d). [BOLOGNA STONE.] 2. Fetid. 3. Allomorphite. 4. Cal care oba rite. 5. Celestobarite. 6. Cal str on barite. It is found altered into calcite, spathic iron, and a variety of other minerals.