No. 161.] 
55 
The galena at this locality is associated with sulphuret of zinc 
and green fluor. The former mineral occurs in a vein of a few 
inches in width, and has been obtained in considerable quantity. 
It has a brown color and foliated structure. 
Analysis of Blende^ or Sulphuret of Zinc, from Morristown, SL LaW' 
rence county. 
Sulphur, ..,..>. 32.80 
Iron, 6.30 
Zinc, , 50.40 
Gangue, « • • 1 .50 
100,00 
The minerals found at this locality are such as are known to be 
associated with the richest deposites of lead ore. And if any reli- 
ance is to be placed upon those indications, I am quite sanguine in 
the belief that this vein will eventually repay the outlay which has 
been incurred in its examination. But upon a subject confessedly 
so full of uncertainty, I trust that my opinion, although honestly 
expressed, will not be considered as justifying a plan of operations, 
which, if unsuccessful, might greatly embarrass, if not ruin, those 
who are concerned in them. 
The galena of which I obtained specimens at this vein is of good 
quality, and can easily be separated from the gangue, as will be 
shown by the following results: 
Analysis of Galena, from JVIorristown, St. Lawrence county. 
Sulphur, 13.19 
Lead, 84.94 
Carbonate of lime, or loss, 1.87 
100.00 
Sulphuret of lead has also been found in the town of Martins- 
burgh, Lewis county. It is associated with calcareous spar, which 
sometimes assumes the form of six-sided prisms, and with iron py- 
rites, from which it is with difficulty separated. The vein is said 
to have a course 10° north of west, and to be about four inches in 
width. 
