MINE'RALOGY. 
Is very feldom found pcrfeftly free 
fi-om a calcareous fubftance. 
2 , Green, Viride montamm. 
Both thefe colours depend on men- 
ftrua, which often are edulcorated or 
walhed away. 
3. Red. This is an efflorefcence of the 
glafs copper ore* It is found in the 
province of Dal, and at Oftanberg, in 
the province of Dalarne. 
SECT. CXCV. 
b. Indurated, Indurata, Glafs copper ore." 
a. Red, Miner a cupri calcifofmis pur a 
indurata^ colore rulro* 
This is fome times 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 like wife found along with 
the fulphiirated copper, and is com- 
monly, though very improperly, called 
Glafs"' copper ore. 
SECT.- CXCVL 
. Mixed^ Minera cupri calciformis impurdl 
a. Loofe or friable, Ochra veneris friahilii 
impura. 
1.^ Mixed 
