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SCHORL FAMILY. IV. SCHORL FAMILY. This family contains the following species: Topaz, Schorlite, Pyrophysalite; Euclase, Emerald; Iolite*; Schorl, Epidote, Zoisite; and ^xinite, 1. Topaz-j*. Topaz, Werner. Topazius octaedricus prismaticus, Wall. t. 1. p. 251.—Topaze du Brezil, R. d. L. t. 2. p. 230.—Topaze de Saxe, Id. p. 2(i0. —Topaz, Wern. Cronst. p. 97.—Id. Wid. p. 267—Occiden tal Topaz, Kirw. vol. i. p. 254.—Topaz, Estner. b. 2. f. 98. Id. Emm. b. 1. f. 374.—Topazio, Nap. p. 136.—Topaze du Brezil, de Saxe et de Siberie, Lam. t. 2. p. 254.—Id. Brock. t. i. p. 212.—Id. Hauy, t. ii. p. 504.—Topaz, Rents, b. ii. th. ii. s. 40.—Id. Lud. b. i. s. 68.—Id. Suck. 1. th. s. 455. -—Id. Bert. s. 294.—Id. Mohs, b. i. s. 27.—Id. Hah. s. 54. —Id. Lucas, s. 43.—Id. Brong. t. i. p. 419.—Id. Brard, p. 1X6.—Id. Kid, vol. i. p 145.—Id. Hauy, Tabl. p. I7. Id. Steffens, b. i. s, 33, External Characters. Its principal colour is wine-yellow, which occurs of all degrees of intensity. The pale wine-yellow passes into yellowish-white, greyish-white, greenish-white, mountain-green, and ce- Lndine-green, The * lolite has sometimes been arranged under the Ruby Family, but its true place is in the Schorl Family. The name Topaz is derived from Topazos, a small island in the Red Sea, where, it is said, the Romans used to collect their topaz, which is the Chrysolite of the modems.