IS6 A SYSTEM OF 



SECT. CLXXXVII. 



B. Mineralifed, Plumbum miner ali fat urn. 



i . With fulphur alone, Plumbum fulphure mii 

 neralifatum: The Bley-Schweij}\ or Bley- 

 glanz^ of the Germans. 

 a. Steel-grained lead ore, from the mines 

 at Reliefers, in the province of Weft- 

 manland. 

 h. Radiated, or antimoniated lead ore. 

 c. Teffellated, or potters lead ore. 



At Villach in Auftria there is faid to 

 be found a potters lead ore, which con- 

 tains not the lead portion of filver. 



SECT. CLXXXVIII. 



2. With fulphurated filver, Plumbum argent o 

 fulphur at o miner ali fat um. Galena-, alfo called 

 Bleyglanz by the Germans. 



a. Steel-grained, is found in the mines of 

 Salberg and Hellefors, in the province 

 of Weftmanland ; and in the Dorothea- 

 mine, in the Hartz in Germany. 



b. With fmall fcales, is found at Salberg, 

 and is there particularly called Blyfchwetf* 



t. Fine-grained, found at Salberg. 



d* Of a fine cubical texture ; and, 



e . Of coarfe cubes. Thefe two varieties 



are found in all the Swedifh filver mines. 

 /. Criftallifed, from Giflof in the province 



of Skone*. 



* The fleel-grained and fcaly ores are of a dim and dull ap- 

 pearance when they are b^oke, and their particles have no de- 

 termined angular figure: They are therefore in Swedifh com- 

 monly called BIyfcb<weif, in oppoiition to the cubical ores, 

 which are called Bhglanz. .But, in my opinion, the ores ought 



to 



