37 
metal : among these is also the pale yellow, fine saloon. 
grained variety, the hematitifcnn pyrites from Nat. hist. 
Cornwall, first described by the Comte de Bour- 
non. — Red or ruby copper ore, compact, foliated 
and fibrous ; one of the more remarkable is the 
bright red capillary variety from Rheinbreiten- 
bach, in Nassau. To these are added a few speci- 
mens of what is called tiie-red copper or tile ore> 
a mixture of red copper ore and brown iron ochre. 
(Case 30.) Ores of copper continued : black cop- 
per, massive, and as superficial covering to other 
copper ores. — Carbonates of copper: crystallized 
radiated blue or azure copper, from Chessy and 
the Bannat, with barytes, &c, and earthy varie- 
ties of the same, some of which (called moun- 
tain blue) have been used as pigments. — Crystals 
passing from the state of blue copper into that of 
green carbonate (cuivre carbonate bleu epigene 
Hally.) — Green carbonates of copper : among 
which are the beautiful varieties of fibrous ma- 
lachite of velvety appearance, in acicular crystals^ 
with carbonate of lead, &c. 
[Case 31.) Ores of copper continued: among 
the specimens of compact malachite the most 
beautiful and characteristic are those from the 
Gumashevsk and Turja mines in the Ural moun- 
tains. — In this case is also placed the copper- 
green of Werner^ a substance often confounded 
with 
