No. 50.J 
251 
is believed not to amount to many tons. Whether this mine will ulti- 
mately be a profitable investment of capital, is doubtful ; but it is thought 
that when the vein shall have been followed into the subjacent slate rock, 
the mine will probably prove more productive than it has thus far. It 
was intended to re-examine this mine the past autumn, when I could 
see the results of the explorations of the company for the past season, 
as it was intimated to me in the spring, that they had determined to ex- 
pend $10,000 on it this year. As I have not been able to examine it 
this fall, I hope to do so next season. 
The Shawangunk 7nine, is located on the Shawangunk mountain, 
about two miles northeast of the flourishing village of Wurtsboro', in 
Sullivan county, at an elevation of 600 or 700 feet above the Mamaka- 
ting valley. The vein, in many places, has the aspect of a bed parallel 
to the contiguous strata of the grit rock of the mountain, but from a 
careful examination, it is believed to be a true vein, which, hke some 
of the veins of magnetic iron ore that were examined in Putnam and 
Orange counties, runs between the strata, and then cuts obliquely across 
them, without altering its dip in any great degree. The strike of the 
vein corresponds nearly to that of the grit rock, but its aggregate dip 
is greater. The strata were observed to be more or less broken and 
bent, where the vein, after passing between them, crossed them oblique- 
ly. The grit rock on the mountain near the mine is traversed by small 
veins of quartz, which is more or less porous from the decomposition of 
its contained minerals. The vein on which the mine is worked, varies 
from two to five feet in width, and the larger portion of its mass, as far 
as it has been explored, is a silicious rock similar to that forming the 
roof and floor, except that it contains fragments and particles of green- 
ish and blackish slate. The vein-stone is more or less loaded with 
blende, galena, copper pyrites, iron pyrites and crystallized quartz. 
The blende and galena constitute probaby || of the metalliferous con- 
tents of the vein, and these minerals are in general more or less inti- 
mately mixed. 
The metalliferous part of the vein is from one to three feet thick in 
some parts, in others it narrows to a thin almost linear seam ; in some 
places the lead ore, in others the zinc ore predominates. The ore, as 
an aggregate, may be said to lie in bunches, and the productiveness of 
different parts of the vein is very variable. When examining the mine 
last spring, three masses of galena, free from other ores and from gan- 
gue, were taken out of the mine, weighing about 800, 1,000 and 1 ,400 
