194 A SYSTEM OF 



t T 



the Swedifh and Norwegian copper' 

 mines. 

 4. Criftallifed marcafitical copper ore. 

 a. Of long oclocdrical criftuis. 



This is found at Hevaffwik, in 

 the province of Dal, and in Lo- 

 vifagrufva, in Wdimanland -, not- 

 withitanding its exiftence is denied 

 by Hcnckel, and his followers. 



d. Pale yellow, Pyrites cupri pallide flavus. 



This cannot be deicribed but as a 

 marcafite, though an experienced eye 

 will eafily difcover fome difference be- 

 tween them. It is found at Tunaberg,, 

 in the province of Sodermanland,. and 

 yields 22 per cent, of copper. 



e. Liver-coloured. 



This is found at Falun, in Dalarne 5 

 where it contains copper; though at- 

 molt other places, where it occurs, it 

 does not contain any copper, but is only 

 a martial marcafite. 



SECT. CXCIX. 



3-, With fulphurated arfenic and iron, Cuprum 

 ferro ex arfenic fulphurato miner alifaturn.. 

 White copper ore. 



It is faid to be found in the Hartz, in 

 Germany, and to refemble an arfenical py- 

 rites •, but I have never met with this kind. 



However, moil of the pyritical copper 

 ores, as well as the marcaiitcs, contain a 

 little arfenic, though it is in too i'mall a 

 quantity to be obfervable. 



SECT. 



