Elements of Mineralogy. 



SPECIES I. 



Native. 



2. It is now known that native iron ex- 

 ifts in many places, the moft remarkable mafs 

 of this fort is, that difcovered in Siberia, 

 ^vhich weighs 1600 pounds. It is of that 

 fpecies called redjhort iron, being malleable 

 while cold, but brittle when red hot. Pal- 

 las Retfen, 3 TbelL p. 41 1< 



Mineralized. 



Calciform Ores. 



3. The bafis of the calciform ores, is either 

 tlie black or blackiih brown "calx of iron, 

 which is in fome meafure phlogifticated and 

 magnetic, or the red calx of iron, which i 

 more dephlogifticated, and not magnetic be- 

 fore torrefadion. 



SPECIES II. 



Jbroivn Calx of Iron, mixed 'with Iron in its 

 metallic State. 



Steel Ore. Sfablerz. FerrumChalybeatum,Lin. 

 Minera Ferrinigra. Cronft. . 212. 



4. Of a dark fteel colour, folid, compafi^ 

 and finning in its ft adure 5 fcarcely gives fit 3 



with 



