MINERALOGY* i6t 



pure copper can be fmelted. It is found in 

 Sladkierr's Grufva in the province of Dal, 

 and at Bifpergs Klack, in the province of 

 Dalarne. 

 B. Miner a ferri phlogiftica. 



This is not very different in its appear- 

 ance from the pit-coal or foflil pitch ; but 

 it is fomewhat harder to the touch : there 

 are two varieties of this fpecies : 

 i . Fixt in the lire, Miner a ferri phlogiftica 

 fixa. 



Expofed to a calcining heat, it burns 

 with a very languid though quick flame, 

 it preferves its bulk, and lofes only a 

 little of its weight. It yields above 30 

 per cent, of iron. 



a. Solid, refembles black fealing-wax. 



It is found in the liver-coloured mar- 

 cafite, (Seel, cliii.) in Wafkberget, at 

 Norrberke, in Weftmanland. 



b. Cracked, and friable, from Finnber- 

 get, at Grythyttan, in Weftmanland, 



2. Volatile in the fire, Miner a ferri pblogi- 

 ftica votatilis. 



This is unalterable in an open fire, 

 either of charcoal, or even upon a piece 

 of charcoal before the flame of the blow- 

 pipe : but under a muffel the greatefl 

 part of it volatilifes, fo that only a fmall 

 quantity of calx of iron remains. It is 

 found, 



a. Solid, from Kronprints Shufff, at 

 Kongfberg, in Norway. 



b. Cracked, from the parim of Quift- 

 bro, in the province of Nerike. 



This lad kind leaves more afhes i 



thefe ames, when farther expofed to 



M the 



