38 
SALOON. 
Nat. Hi sr. 
silver and horn ore, of various colours, amorphous, 
botryoidal, in laminae, and crystallized in minute 
cubes and octohedrons;—the very scarce carbonate 
of silver, also called grey silver ore, from Alt-Wol- 
fach in Suabia, &c.—In this case begin the nume¬ 
rous copper ores: among the specimens of native 
copper (which, like the native silver, presents a great 
variety of forms, besides the crystallized, such as 
dendritic, filiform, &c.) may be specified the mass 
from Hudson’s Bay, found by Mr. Hearne and de¬ 
scribed by him in his journal. 
( Case 32.) Ores of copper continued ; common 
sulphuret of copper or vitreous copper, variously 
crystallized, foliated, compact, &c. To this are also 
commonly referred the oblong, scaly, secondary fos¬ 
sils, known by the name of Frankenberg corn 
ears, which occur in the bituminous marl-slate of 
Frankenberg in Hessia, and are principally com¬ 
posed of vitreous and grey copper.—The variegated 
copper ore, easily known by the reddish colour of its 
fractured planes, massive and foliated.—The grey 
copper ore (fahl ore), crystallized, massive, and dis¬ 
seminated in various substances. 
(Case 33.) Ores of copper continued: yellow 
copper or copper pyrites, the most common of all 
the ores of this metal: among these is also the pale 
yellow, fine grained variety, called hematitiform 
and blistered copper pyrites.— Seleniuret of copper 
and silver, called eukair 'rte, in foliated carbonate of 
lime 
