. Ses 
) 
Geology, &c. of the Connecticut. 207 
ide disseminated in sandstone, and mixed with a small pro- 
portion of green carbonate of copper. How productive this 
mine has been, I do not know. 
in Greenfield Mass. 
11. Vein of Green Carbonate of Copper and Pyritous Copper 
G ; 
This is found on the west bank of Connecticut River, 
one hundred rods below the mouth of Fall river, and about 
the same distance in a direct line from Turner’s Falls. It 
occurs at the junction of the greenstone and red slate of the 
coal formation, and passes obliquely into the hill of green- 
stone on the one side, and into the slate on the other in the 
bed of the river. The principal vein is five or six feet in 
diameter, and the matrix, toadstone, which is traversed, 
in the direction of the vein, by several veins of sulphate of 
barytes, which form sealbandes. The principal ore that 
appears at the surface is the green carbonate, the pyritous 
copper being rarer. 
12. A similar vein in the same township. 
About a mile below the vein just described, (down the 
stream,) is another, which I am told is very similar and 
therefore needs no description. In other places between 
these veins, I have noticed, in the red slate, veins of the 
green carbonate of copper, not more than a quarter of an 
inch thick, while the walls are glazed so as to resemble pol- 
ished steel; constituting handsome specimens of the Slhek- 
enside of the Germans. 
Mines, Veins, and Beds of Iron Ore. 
13. Micaceous fron Ore in Veins, in Montague. 
Near the north line of the town, a little south west of the. 
mouth of Miller’s river, a granitic hill of considerable extent 
and elevation is traversed by veins of this ore in all direc- 
tions; constituting one vast stock werke. The principal vein 
is nearly ten feet in diameter, and the gangue is quartz. 
do not see why this ore could not be profitably wrought. See 
Journal of Science, Vol 1, p. 438, where this ore is descri- 
bed under the general name of specular oxide of iron. 
