334 Elements of Mineralogy. 



all which it is feparable by folution in nitrous 



acid, as before explained. 



Mineralized by the vitriolic Acid. 

 Wifmutb Bluth. 



5. This is faid to be of a yellowifh, red- 

 difh, or variegated colour, and to be found 

 mixed with the calx of bifmuth, incrufting 

 other ores. Veltheim Grundrifs. 



Mineralized by Sulphur. 



6. It is chiefly found in Sweden, is of a 

 bluifh grey colour, lamellar texture, and tef- 

 fellar form like galena, but much heavier ; it 

 fometimes prefents parallel ftriae like anti- 

 mony, and its colour is variegated ; it is 

 faid to contain befides bifmuth alfo cobalt 

 and arfenic. 3 Lin. von Gmelin, 133. This 

 ore is very fufible, and the fulphur moftly fe- 

 parates on fcorification ; it is foluble in nitrous 

 acid, and is analyfed like the foregoing ores. 



Mineralized by Sulphur with Iron. 



7. This is faid to be of a lamellar cunei- 

 form texture, and to be found in Norway. 



8. In the dry way bifmuth is extracted 

 from its ftony ores by mixing 2 parts of the 



pulverized 



