19$ A SYSTEM OF 



c, Criftallifed. 



i. In o&oedrical criftals. 



2. In polyedrical criftals. 



3.. In a cellular form, from Mofsgruf- 

 van, at Norberg in Weftmanland. 



Thefe varieties are the moft com- 

 mon in Sweden, and are very feldom 

 blended with marcafite, or any other 

 heterogeneous fubftance, except their 

 different beds. It is remarkable, that, 

 when thefe ores are found along with 

 marcafite, thofe particles, which have 

 laid neareft to the marcafite, are at- 

 tracted by the loadflone, although they 

 yield a red or reddiih brown powder, 

 like thofe which are not attracted by 

 the loadflone : It is likewife worth 

 obfervation, that they generally con- 

 tain a little fulphur, if they are in- 

 bedded in a lime-ftone rock, which 

 however very feldom happens in Swe- 

 den ; but I know only one fuch in- 

 stance, viz. at Billfio, in Soderberke, in 

 the province of Dalarne. Sect, ccxiii, 



SECT. pCIV, 



2. Blackifh brown bloodflone, Hema- 

 tites nigrefcens. Kidney ore. 



This yields a red or brown powder 

 when it is rubbed \ it is very hard, 

 and is attracted bv the loadilone. 



a. Solid, with a glaffy texture, from 

 Wcfterfilfverberget, in the province 

 of Weftmanland. 



b. Radiated. 

 £■> Cnitrtliiieclv 



i. In 



