Iron. 271 



With fteel> gives a black powder, is magnetic, 

 and in fome degree malleable when red hot. 

 It affords from 60 to 80 per cent, of good 

 iron. It is found at Adelfors and Danne*. 

 mora in Sweden* alfo in the IJle ofElbe^ and 

 North America. 



5. Chryftalized iron ore in an otohoedral 

 or cubic form, ferrum tejfulare> and miner a 

 ferri cryfalizata of Wallertus^ belongs to this 



fpedes, it is fomewhat lefs magnetic, pro- 

 bably becaufe it contains lefs of metallized 

 iron. 



SPECIES III. 



Magnet. 



6. This differs but little in its appearance 

 from the preceding ore, but has lefs luftre ; 

 it is either coarfe or fine grained, the coarie 

 grained lofes its power fooneft. It feems to 

 contain a fmall quantity of fulphur, as it 

 fmells of it when red hot. It is probable 

 that it contains more particles of iron in its 

 metallic form, than the preceding ore, but it 

 is often contaminated with a mixture of 

 quartz and argill. It is poffible it may con^ 

 tain nickel, for this when purified to a cer- 

 tain degree, acquires the properties of a magnet, 

 2 Bergm. 242. Its conftitution has not as yet 

 been properly examined. 



SPECIES 



