A System of Mineralogy (Volume 3) (Paperback)

This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated.1816 Excerpt: ... ORDER IX--LEAD. This Order contains the following species, viz. Gale? na or Lead-glance, Blue Lead-ore, Bournonite or Antir monial Lead-ore, Cobaltic Lead-ore, Native Minium, White Lead ore, Black Lead ore, Corneous Lead-ore or Muriate of Lead, Phosphate of Lead, Arsenate of Lead, Sulphate of Lead or Lead-vitriol, Yellow Lead-ore or Molybdate of Lead, and Red Lead-ore or Chromate of Lead. 1. Galena or Lead-Glance. Bleiglanz, Werner. This species is divided into two subspecies: I. Common Galena or Lead-glance. 2. Compact Galena or Lead glance. First First Subfpecies. Common Galena or Lead-Glance. Gemeiner Bleiglanz, Werner. Id. Werner, Pabst. b. i. s. 97. Id. Wid. s. 841.--Common Galena, A'lVrt'. vol. ii. p. 216.--Gemeiner Bleiglanz, Emm. b. ii. s. 369 Plomb sulphure, Galene, Lam. t. i. p. 28O..-292--Plomb sulp iure, Hauy, t. iii. p. 456.--La Galene commune, Brocfi. t.ji. p. S95.--(Semeiner Bleiglanz, Reuss, b. iv. s. 174. Id. Lud. b. i. s. 2.18. Id. Suck. Sr tit. s. 306. Id. Pert. s. 445. Id. Mohs, b. iii. s. 469.--Blaettriges Bleiglanz, Hab. s. 126.--Plomb sulphure, Imcox, p. 114.--Gemeiner Bleiglanz, Leon hard, Tabel. s. 70--Plomb sulphure laminaire, UroKg. t. ii. p. 195. Id. Brard, p. 265.--Bleiglanz, Kartten, Tabel s. 68. Id. Hans. s. 74--Sulphuret of Lead, Kid, vol. ii. p. ISO.--Plomb sulphur, Hauy, Tabl. p. 79.--Galena, Aikin, p. 44. External Characters. Its Colour is fresh lead grey of different degrees of Intensiy-. On the surface, it sometimes shows a temperedsteel or iridescent tarnish. It occurs most frequently massive, nnd disseminated; also in membranes, in angular piece, in grains, reticulated, specular, corroded, and amorphous, seldom fusedlike and cylindrical; frequently crystallised: 1. Cube, Fig. 219. which is the fundamental figure, exhib...