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BISMUTIIINE. 173 In crystals, massive, disseminated and investing other minerals. Occurs imbedded in granite, syenite, gneiss and chlorite slate ; sometimes in beds with magnetite, in veins of cassiterite. Is found with cassiterite at Altenberg and Ehrenfriedersdorf m Saxony, and Schlackenwald and Zinnwald in Bohemia; in grauite in the iron mine at Bispberg near Slither, and near Stockholm in Sweden, with augite in beds of iron ore and in zircon syenite at Laurwig in Norway, Bathhausberg in Salzburg, Wallis, Silesia, Chessy in France, in granite at the foot of the Talefre near Mont Blanc, abundantly in granite and gneiss in the United States, Peru, the Brazils, with tin and copper in the Drake-walls mine near Calstock, near Menabilly, lluel Unity and lluel Gorland in Cornwall, in the granite of Cald- beckfell near the source of the Caldew in Cumberland, Shap in Westmoreland, in chlorite slate at G-lenelg in Inverness-shire, and in granite on the mountain of Coryby at the head of Loch Creran in Scotland. 62. BISMUTIIINE.—Sulphuret of Bismuth; Phillips. Bis muth sulphurc; Ilauy. Prismatischcr WIsmuth-Grlanz ; Mohs. Wismuthglanz ; Ilausmnnn. Bismuthin; Haidinger. Prismatic. 110,100 = 45° 30'. a loo, ft oio, c ooi cleavage, m no, e 310. FIG. 170. lo 90° o' ca 90 o ca 18 41 ma 45 30 la 90 0 mm 89 o b Combination, male. Crystals obtained by fusing sulphide °f bismuth are combinations of ami. The faces in deeply striated parallel to their intersections with a. Cleavage, a, perfect; ft, less perfect; c, m, imperfect. Fracture imperfect eonchoidul, seldom observable. Opaque. Lustre metallic. Lead-grey, inclining to tin-white ; acquires a yellowish or varie gated tarnish. Streak the same. Sectile. n = 2-0. g = S’4..,6*5. In the open tube yields a sublimate of sulphur, with disen gagement of sulphurous acid, and boils. Before the blowpipe charcoal, in the iuner flame, melts readily with effervescence, i 3