544 CALG GENUS. { ...ll* -v d - >fl SIXTEEN T,H SPECIES. : ;; .tv ^ • £!..•< \ - •: ’ • i r. :'i n.JhrT Borazit.—Werner. . ; r ” Boracite, 7/^id. f. 533. ZL Kirw. vol. 1. p. 172. Id.EJinO' b. 2. f. 1061. A/. Emm. b. 1. f. 509, Id. Nap. p. 370.7' La boracite, Brocb. t. 1. p. 589. External Characters. Its colours are yellowifh, fmoke and greyilh white? alfo greenifh white, which pafles into afparagus greeO' It is always cryftallized, and the following are i ts principal figures: 1. Cube having its edges and angles truncated. 2. When the truncations on the edges increafe fo much that the original planes nearly dis appear, the garnet dodecaedron is ncarty formed. 3. When the truncations on the angles increafc fo much that the original faces of the cub c difappear an o&aedron is formed. Some varieties approach in figure to the cryft^ 1 ' zation of the hyacinth. * • • ' • - nJe