¥ * é a . = 
82 —_ Survey of the State of New York. 
“ 2 
- The ore “is found in wedge-form masses, which thin out en- 
tirely in the downward direction, and the quantity varying from 
120 tons to a mass of 500 lbs., which was moyeable with a bar, 
in place,”—its connexion with the — rol 
stroyed by decomposition. 
The most abundant variety of iodine ore, “occurs of a dodp 
red color, and in red powder, or bright shining scales, which by 
slight’ pressure become a red powder.” Some of the deposits 
“are apparently inexhaustible, and others are merely a mass of 
red earth in which there are a few lumps of hard ore.” “ Their 
position is confined to the upper portion of the primary strata, and 
lower layers of the Potsdam sandstone. It is rather remarkable 
that this rock, so generally connected with this deep red ore, is 
not as highly colored throughout as it is in some places, although 
— it is white, or pale red, with a tinge of brown or yel- 
low 
From the observations made by Prof. Emmons in some of these 
mines, he suggests that the ore which appears in some “cases 8 
“a bed lying between the primitive rocks, and the oldest of the 
sandstones,” may be “in veins, being the upward extension into 
the sandstone from the primary mass.” In support of this view, 
he mentions the following facts connected with the occurrence of 
this ore: ‘1. There are numerous places where this ore has no 
other connexion than with the primary. 2. There are strong 
reasons to suppose that at these localities the sandstone has beet 
removed, and that they were formerly in the same geological re- 
lations as the range in which the Parish and Kearney bi 
are now found. There are every where abraded surfaces and 
fractured strata, and it appears that the sandstone was once col- 
tinuous over wider areas than it now occupies, as we find its re 
mains as far east as the specular iron is known to occur. Accord- 
ing to this view the sandstone, together with the red ore, has beet 
removed, and according to well known facts, the whole must 
have been carried south; and what do we find in that direction? 
Not only beds of red oxide of iron, mixed it is true with argilla 
ceous matter, but also silicious rocks, the red sandstone, and the 
gray band of Prof. Eaton, &c., in connexion with presi argillae. 
ceous oxide,””* 
rh ic i 
* See Vol. xxx1x, pp. 104, 105, Am, Journal. 
aving been de, ~ 
