76 
HALL 79. 
COPPER, ZINC, ANTinONY, NICKEL, IRON 
AND riANGANESE. 
The collections in this hall comprise the typical copper, zinc, 
antimony, mercury, nickel, iron, and manganese ores, and the 
minerals of economic value that commonly enter into the compo- 
sition of these ores. There are also to be seen here products re- 
sulting from the treatment of some of the ores. 
COPPER. 
Cases 1, 2, 3, 4, 5, and A. — Copper ores. 
Copper is found in a metallic state in large quantities, and 
very pure. The chief sources of supply of this metal are (i), the 
sulphide ores ; (2), the native metal ; (3), the oxides and carbon- 
ates. 
Chalcopyrite — copper iron sulphide — containing about 34 per 
cent, of copper. 
Bornite — sulphide of iron and copper — carrying between 55 
and 60 per cent, of copper. 
Chalcocite — sulphide of copper — containing 80 per cent, of 
copper. 
Malachite — carbonate of copper — a light green carbonate 
carrying about 57 per cent., and Azurite — the blue carbonate — hav- 
ing about 55 per cent, of metal. 
Tenorite — black oxide of copper — carries 80 per cent, of 
metal. 
Cuprite — red oxide — when pure, contains 88 per cent, of 
copper. 
Chrysocolla — bright bluish-green silicate of copper — contain- 
ing, when pure, about 36 per cent, of copper. 
Tetrahedrite — gray copper - a complex mineral of sulphide of 
copper and antimony, frequently containing other metals, notably 
silver. 
