276 CLAY GENUS. FIRST SUBSPECIES. Compaft Felfpar. Dichter Feldfpath.—Werner. Id. Wid. p. 345.—Continuous felfpar, Kirw. vol. 1. p. 323. —•Felfite, Id, p. 326—Dichter feldftein, EJlner, b. 2* f. 511. Id. Emm. b. 1. f. 271-—Felfpato compatto, Nap. p. 218—Feldfpath compafle bleu, Hauy, t. 2. p- 613 Le feldfpath compa&e, Broch. t. 1. p. 367. External Characters. Its colours are grey, white, blue, green, and red. The varieties of white are greenilh and greyifh white: Of grey, greenifh, fmoke and afh grey ; from green- ifh grey it pafles into apple green, piftacio green, even into mountain green; further into fky blue and finalt blue; it occurs alfo flefh red and blood red. Occurs maffive, diffeminated, in rolled pieces, and in cryflals, which are imbedded in antique green porphyry. Internally its luftre is fometimes gliftening, fome times glimmering. Fra&ure