268 METALS. 85. Ferrunn 



Cuprum facie Carbonaria. Wall, fvji-, 2. p. 285. ;/. i 3-. 

 C'mbuftible Copper ore. Kir^wan miner. 2. p, 153. 

 Bituminous Copper. SchmeiJJer mineral, z. /, 149. 

 Pitch ore. Thomfon chem. 4. p. 45. 



found in Daleccrlia in Siveden and in Siberia^ and refembles a 

 piece of coal or bituminous fhift: it cnnfirts of bituininous 

 coal or fliale impregpated vvitn oxyde of copper : the ore is 

 extrafted from the afhes with confideraLIe difficulty. 



85. FERRUM. Bluifh-grey, eafily rufiing in the 

 air, very hard, tenacious and elaftic, fonorous, 

 exceedingly malleable, dudlile, attraded by the 

 magnet and itfelf convertible into the magnet, 

 fpecific gravity 73778: becorning white in the 

 fire, then emitting brilliant fparks, and at laft 

 melting, forming a red oxyde when its filings 

 are kept red hot in an open veliel and ftirred : 

 Ibluble in all acids, giving them an afaingent 

 tafte and a black colour >yhen mixed with vege- 

 table ailringents, precipitating a green powder 

 when difToived in fulphuric acid and mixed with 

 potafs, with the prufTic acid producing a rich 

 azure- blue, Iron^, 



^ati'vumt Uncombined, malleable, 



Ferrum nudum. Syft. nat. xii. 3. /. i 36, j^. t« 

 Ferrum nativum. Wall. f^st. 2. p. z^^. n. i. 

 Native Iron. Kirivan miner. 2. p. 1 56. 

 Native Iron. SchmeiJJer miner 2. p. 82. 

 Native Iron Thorn/on chem, ^^ p, 50. 



Thib mofi. ufeful of all metals, the continual attendant on maa 

 in all his ftates of fecial exillence, which to the labourer and 

 the mechanic gives his tools, to the foldier his arms, to the 

 failor his comp f?, and to the fcholar his penknife and ink, 

 is very rarely if ever found in a native uncombined flate: 

 moil of thofe maffes which have been found in America, 

 Sibertay Sec. feem more properly to belong to the meteoric 

 kind, as they all contain a portion of nickel; though Mr. 

 Kirvvan thinks that 11 has, beyond doubt, been detefted at 

 EibenHock in Sixeden^ and in the mountain of Grand Gilbert in 

 Pauphiny* 



