37 
metal : among these is also the pale yellow, fine 
grained variety, the hematitiform pyrites from 
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 tile-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, chiefly from 
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 
Hauy.) —Green carbonates of copper: among 
which are the beautiful varieties of fibrous ma¬ 
lachite of velvety appearance, in acicular crystals, 
vvith carbonate of lead, &c. 
{Case 31 .) Ores of copper continued : among 
the specimens of compact malacliite 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 
L with 
SALOON. 
Nat. Hist. 
