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42 HORNBLENDE FAMILY. nor lime, but smaragdite both ; and the quantity of mag nesia in bronzite is four times that in smaragdite. Bron zite is infusible before the blowpipe, but diallage melts into a slag. 2. Its single cleavage distinguishes it from Anthophyl- Ute, in which there is a distinct double cleavage, and the surfaces of these cleavages are smooth and shining. r 8. Anthophyllite. Anthophyllith, Schumacher. Anthophyllith, Schumacher, Vcrzeicliniss, s. 96. Id. Leonhard) Tabel. s. 42. Id. Brong. t. i. p. 444. Id. Karstcn, Tabel, s. 32. Id. Haus. s. 92. Id. Hatty, Tab], p. 68. ~Id. Steffens, b. i. s. 324. Id. Lcnz, b. i. s. 527- External Characters. Its colour is intermediate between dark yellowish-grey and clove-brown. It occurs massive, and crystallized in reed-like crys tals, which appear to be four-sided prisms. The surface of the crystals is longitudinally streaked. The lustre is shining and glistening, and pearly, ap proaching to semi-metallic. The fracture is radiated: the surface of the rays streak ed ; double cleavage, parallel with the sides of a rectan gular prism : other less distinct cleavages are to be seen parallel with the diagonal of the prism. The radiated fracture is sometimes scopiform, sometimes promiscuous. It sometimes occurs in wedge-shaped and lon^j granu lar distinct concretions. It is translucent on the edges, or translucent. If