TAB. XXIV. 



PLUMBU M Catena. 

 Sulphur e of Lead; Galcena. 



Class 3. Metals. Ord. 1. Homogeneous. 

 Gen. 5. Lead. Spec. J. Sulphate of Lead. 

 Div. 1. Crystallized. 



Syn. Galene, Sulphurede plomb. De Bom, v. 2. 354. 

 Bleiglanz. Emmerl. v. 2. 369* 

 Sulphuret of lead. Bab. 166. 

 Lead mineralized by sulphur, compact galsena. Kiriv, 



v. 2. 216. 

 Plomb sulphure. Haiiy, v. 3. 436. 7. 

 Plumbum galasna. Linn. Syst. ed. 12. v. 3. 133. 



Ihis is the commonest lead ore, and is found in Derby- 

 shire and Cumberland ; also in Wales, Scotland, and Corn- 

 wall. It seldom occurs truly amorphous. The present 

 specimen came from Derbyshire, and is valuable from having 

 the primitive cubic crystals so distinct. They are somewhat 

 brighter than manufactured lead, either outwardly or in the 

 fracture, which rather more resembles manufactured lead 

 fresh cut. Some varieties are brighter than others 5 which 



