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6G CHRYSOLITE FAMILY. 4. Chrysolite. Krisolith, Werner. Yellowish-green Topaz. Chrysolith, Cronsledt, § 46. 5. p. 54.— Gemma pellucidissima, duritia sexta, colore viridi, subflavo, in igne fugaci; Chrysolithus, Wall. gen. 18. spec. 119. p. 255. —Krysolith, Wid. s. 264.—Chrysolite, Kirtv. vol. i. p. 262. —Krysolith, Estner, b. ii. s. 122. Id. Emm. b. i. s. 26.— Chrysolito nobile, Nap. p. 127.—Peridot, Lam. t. ii. p. 250. ' —La Chrysolithe, Brock, t. i. p. 170.—Peridot, Ilautj, t. iii. p. 198.—Chrysolith, Ileuss, b. i. s. 49. Id. Lad. b. i. s. 60. Id. Suck, lr th. s. 540. Id. Bert. s. 138. Id. Mohs, b. i. s. 42. Id. Leonhard, Tabel. s. 1—Peridot, Lucas, p. 74.— Peridot Chrysolithe, Brong. t. i. p. 440—Peridot, Beard, p. 179.—Chrysolith, Haus. s. 98. Id. Karslcn, Tabel. s. 40. —Chrysolite, Kid, vol. i. p. 120—Peridot, Hauy, Tabl. p. 52. —Chrysolith, Steffens, b. i. s. 365. Id. Lcnz, b. i. s. 203, —Harter Peridot, Oken, b. i. s. 333. External Characters. Its colour is pistachio-green, which sometimes ap proaches to olive-green, seldom to asparagus-green, and pale grass-green. Very rarely we observe in the same specimen, besides the green, also in a particular direction a pale cherry-red, inclining to broccoli-brown colour. It occurs in angular pieces, (that appear to be origi nal), which are often notched, and have a scaly splintery surface; also crystallised, in the following figures : 1. Broad rectangular four-sided prism, in which the lateral edges are truncated. The broader late ral faces are generally cylindric convex. The jprisjn is acuminated with six planes: of these planes,