M IN EH A LOGY. 191 



Is very ieldom found perfectly free 

 from a calcareous fubflance. 



2. Green, Viride montanum. 



Both theie colours depend on men- 

 ftrua, which often are edulcorated or 

 warned away. 



3. Red. This is an efflorefcence of the 

 glafs copper ore. It is found in the 

 province of Dal, and at Oflanberg, in 

 the province of Dalarne. 



SECT. CXCV. 



b. Indurated, Indurata. Glafs copper ore. 

 c. Red, Miner a cupri calciformis pur a £ff 

 indurata^ colore rubro. 



This is fometimes as red as feal- 

 ing-wax, and fometimes of a more 

 liver-brown colour. It is found in 

 Sandbacken, at Norberg in Weftman- 

 land, at Ordal in Norway, in Siberia, 

 and in Suabia in Germany. 



This ore is always found along 

 with native copper, and feems to have 

 loft its phlogifton by way of effloref- 

 cence, and to be changed into this 

 form. It is likewife found along with 

 the fulphurated copper, and is com- 

 monly, though very improperly, called 

 Glafs copper ore. 



SECT. CXCVI. 



2. Mixed, Miner a cupri calciformis impurd. 

 a. Loofe or friable, Ochra veneris friabilis 

 impure. 



1, Mixed 



