{ Elements of Mineralogy, 

 SPECIES IV. 



Brown Calx of Iron, combined With Plum* 

 bago. 



Black Eifen Glimmer^ Schwartz Eifen Rahm 

 or Eifenman. 



y.This confifts of black fhining fcales, more 

 or lefs magnetic ; Mr. Rinman found it to 

 confiil of plumbago, and 26 per cent, of iron. 

 Hijioria Ferri. . 57. 



SPECIES V. 



feroivn Calx of Iron, united with the white 

 Calx of Manganefe, and mild Calcareous 

 Earth in various proportions. 



White or Sparry Iron Ore^ Weifs Eifen Spath$ 

 Stahf/tein* 



8. Its colour when frem dug is 

 but by expofare to the air, it firft becomes 

 grey, then brown, at laft reddifh, yellowim 3 

 or black* Its fhape, either amorphous or 

 fhomboidal, it is frequently tranfparent, its 

 texture lamellar, fcaly, granular, or cellular* 

 Sometimes it affumes a ftalaclitical form, and 

 fometimes it is found in a powdery ftate, and 

 is then of a brown blackifh colour, is fre- 

 quently interfperfed with quartz and py- 



rites, 



