aSi METALS. S7. FFumbiim. 



Native lead, Ktrnvan miaer. 2, p. 2C2, 



Native lead. SckmeiJJer mineral- z- p, i68r 



Found in Monmoutkfiire, Folandy and Sikjia: chcugfe kis much 



doubted whether lead is ever found la its perlctt metallic 



ftate. 



« 



tcJ:>raceum. Pulverulent, without 1 11 (Ire, totally foluble in nitric acid 

 with effervefcence, eafily reducible to a metallic ftate 

 on charcoal. 



Ochra plambi. Syjl, nat^ xii. 3./. 193. n. 7. 

 Plumbum terrcum. WalLffst. 2. p. 315. k. 13. 

 Earthy lead ore ar ochre. Kir^wan 2. p, zoj* 

 While opake lead ore. Schmerfer 2. p. 171* 

 Earthy lead ore. Ihomfon chem. 4, p. 75. 



Found in the various lead mines c>f Gnat-Brrfaix, Saxony, Ger^ 

 manyy &c. in a loofe earthy ftate, and generally feated g« 

 galena : colour white, grey, red or yellow : it becomes red 

 when expoftd toa fufficient heat> and cantarns a confiderable 

 portion of carbonic acid gas: it yields from 60 to 80 per cent, 

 of lead, 



terrmn* rn<lurated, without luflre, earthy inteFnally, foloble in 

 nitric acid with efFervefcence. 



Plumbum terreftre. Wall. Jy ft. 2. /. 210. », io» 



Earthy indurated lead ore. Kir<voan 2. p. 205, 



White opake lead ore. Schmeijfer z. fh. 1 7 ». 



Earthy lead ore. Thom/cn ch^.m. 4/. 75. 



Found with the laft, of which it fecms ©nly an indurated vari- 

 ety, in larger or lefs mafles intermixed with other ores and 

 fofiils, in various (hades of white, grey, blue, yellow, red or 

 brown, 



mcaceum, Greafy to the touch, lamellar, of a filvery colour and 

 luftre. 

 Bofe ffhr berl. naturf. 8. p. 204. 



Found in the mines of the Harxy and confifts of numerous plates 

 incumbent on each other. 



mtrtum^ Stmitranfparent, brittle, of a glafly texture and luftre, and 

 common form. 



Wonlf. Fhilof. Tranf, 66. 2. », 43. 



Glafs of lead. Kirnvan mineral. 2.^.204. 



Glafs of lead. Schme'Jfer mineral. 2. p. ijG, 



Found in Somer/etjhire, and the lead hills in Scotland^ in Francr^ 

 Saxony, Siberia, Hungary^ Sec. colour white, grey, or yeU 

 lowifli-green : texture conchoidal or fplintery : it does aot 

 efiervcfce with nitric acid. 



