36 
SALOON. 
KaT. iiiSTc 
case are the dark and light coloured varieties of 
red silver, massive, crystallized and in combination 
with various substances;—the black silver ore, or 
sooty silver, which has not been analysed;— 
the muriate of silver, called also corneous sil¬ 
ver and horn ore, of various colours, amorphous, 
botryoidal, in laminae, and crystallized in minute 
cubes and octohedrons ;-^the very scarce carbo- 
nateof silver from Alt-Wolfach in Suabia.—In this 
ease begin the numerous copper ores, with native 
copper, which, like the native silver, presents 
a great variety of forms, besides the crystallized, 
such as dendritic, filiform, &c. 
(Case 28.) Ores of copper continued:—com¬ 
mon stilphuret of copper or vitreous copper, va¬ 
riously crystallized, foliated, compact, &c.—To 
this are also commonly referred the oblong, scaly, 
secondary fossils, known by th^narne of Franhen- 
hers corn w'hich occur in the bitumous marl- 
slate of Frankenberg in Hessia, and are princi- 
pallycomposed of vitreous and grey copper.—The 
variegated copper ore, easily known by the reddish 
coloiir of its fractural planes: among the varieties 
of this species is the foliated from Cornwall. — 
The grey copper ore (fahl-ore,) crystallized, mas¬ 
sive, and disseminated in various substances. 
(Cose 29 .) Ores of copper continued : copper 
nvrites, the most common of all the ores of this 
metal : 
