502 
COPPER. 
more or less, in almost every copper-mine, though 
in those of Siberia, especially in the mines of Tou- 
rinski, it is remarkably beautiful. It takes the form 
of cubic or octaedral crystals of two or three lines 
in diameter, so arranged one upon the other as to 
appear like a branched vegetable. Many specimens 
of this kind of copper are as brilliant as the finest 
polished gold. The mine in Cornwall can boast 
many fine pieces of this metal, but they are more 
commonly in granulated masses than in distinct 
crystals. The native copper of Cape Lizard in 
Cornwall is very considerable in quantity, but not 
equal in that respect to what is found at Huell-virgin 
in the same county. There it shoots into various 
branches, and in various directions, generally taking 
the form of rhomboidal crystals : some lumps of na- 
tive copper have been found on this spot weighing 
from twenty to thirty pounds. 
Besides the copper which occurs in its native 
state, there are several subordinate kinds, mineral- 
ized by different substances ; among these we shall 
notice the most remarkable, and then proceed to 
give some account of the principal copper-mines in 
this and other countries. 
Red copper ore is found either under the form of 
a powder ; in transparent filaments variously group- 
ed, and known by the name of red copper Ji.owers ; 
in dark red compact masses ; pr crystallized either 
in cubes or in octaedral figures, which are some- 
times as bright as rubies. This red kind of copper 
may be easily confounded, at first sight, with some 
