C *43 3 



In oftohedrons, and their modifications ; of a yel- 

 lowifh brown colour ; matrix upon a ferruginous 

 quartz or fchiftus. Found in Anglefea, Wales; 

 and near Strpntian, Scotland. 



n. Phosphorated Lead Ore ; lead combined 

 with phofpboric acid ; mining, femi-tranfparent ; 

 found near Freiberg, Zfchoapau, Johanngeorgen- 

 ftadt, Zellerfeld, and in the lead hills, Scotland. 



o. Yelloiv Lead Ore; or lead combined with 

 acid of Tungften; yellow or orange coloured la- 

 mellated, femt tranfparent ; is the mo'ybdate of 

 lead of Klaproth, who found it combined with the 

 molybdenic acid. It is found at Bleiberg in Ca- 

 rinthia, near Villach, near Zellerfeld, and in the 

 lead hills in Scotland. 



F. COPPER. 



COPPER, when pure, is near nine times hea- 

 vier than water; the molt fonorous of all metals, 

 diffolves in all acids and alkaline folutions, oils 

 and water. The lead quantity of this metal, in 

 folution, turns blue by the addition of volatile 

 alkali : united with calamine, it forms brafs; with 

 tin, bell-metal. 



a. Native Copper; malleable, fibrous, fufible, 

 generally found adhering to other foflil fubftan- 

 ces; cryftaliized in cubes, o&ohedrons, compact, 

 laminar, granular. 



b. Native 



