38 
saloon. Suabia.—In this case begin the numerous cop-* 
NA’iTHuT. per ores, with native copper, which, like the 
native silver, presents a great variety of forms, 
besides the crystallized, such as dendritic, fili¬ 
form, &c. 
(Ca$e32.) Ores of copper continued :—com¬ 
mon sulphuret of copper or vitreous copper, va¬ 
riously crystallized, foliated, compact, &c. To 
this are also commonly referred the oblong, 
scaly, secondary fossils, known by the name of 
Franlienberg corn ears , which occur in the bitu- 
mous marl-slate of Frankenberg in Hessia, and 
are principally composed of vitreous and grey 
copper.—The variegated copper ore, easily know r n 
by the reddish colour of its fractural planes : 
among the varieties of this species is the foliated 
from Cornwall.—The grey copper ore (fahl-ore,) 
crystallized, massive, and disseminated in various 
substances. 
( Case33 .) Ores of copper continued : copper 
pyrites, the most common of all the ores of this 
metal: among these is also the pale yellow, fine 
grained variety, the hematitiform copper pyrites 
from Cornwall.—Red or ruby copper ore, compact, 
foliated and fibrous : one of the more remarkable 
is the bright red capillary variety from Rnein- 
breitenbaeh, in Nassau. To these are added a 
few 
