Lead Mines, &c. of Hampshire County, Mass. 257 
iour, the other eighteen inches wide. The argentine is of a 
milk-white color, its texture is firm and is in undulating lay- 
ers, which, upon a cross fracture, present a very remarkable 
pearly lustre. The argentine may be had by tons if any one 
will trouble himself to collect it. As this is the on] 
locality in America, excepting the one at Southampton, it 
h 
cf . © 
placed and confused, and are made up of granite, mica 
slate, micaceous limestone, and argentine, as may be seen in 
a profile pa ec this communication. 
The profile shows the mu- 
ral front containing the argen- 
tine veins and a section of the 
taining the pseudomorphous 
er First, begin- 
ning on the western side of 
the cliff, (1) is twenty feet of 
the pseudomorphous 
s 
containing 
im, 
erystalization. 
rf galena ve 
mi- 
ym 
von O 
* 
: feet, with granite overt (8) 
a vein of argentine eighteen 
inches wide at its.base, forking 
into the granite as it rises a- 
mic a—this 
cand a@ sect 
vein rises almost to 
the top of the cliff; (9) granite, 
eighteen feet—(it will be seen 
that the granite in the cliff caps 
the whole of the other rocks ;} 
(10) the section of the metal- 
lic vein, containing the psen- 
33 
’ 
U 
Argentine el 
VOL. XII.—NO, 2. 
