46 ECONOMICAL MINERALOGY. 



The galena is both foHated and granular, but no regular crystalline forms have been ob- 

 gerved. It is associated with blende and copper pyrites in a gangue of quartz ; calcareous 

 spar and sulphate of barytes are also occasionally intermixed. It is owing to these foreign 

 minerals, that some difficulties have been encountered in the separation and reduction of the 

 lead. 



The following are the results of the analyses of two of the best specimens of galena ob- 

 tained from this locality, viz : 



I. II. 



Sulphur, 13.00 12.68 



Lead, 83.65 81.61 



Silica, or quartz, 3.50 5.71 



Carbonate of lime, traces. 



But it is difficult to obtain any quantity of lead ore without an admixture of the sulphurets 

 of zinc and copper, and the other associated minerals. In addition to these, it may be re- 

 marked, that there is also a minute proportion of sulphuret of silver mixed with the ore. 

 This, however, is scarcely deserving of notice in an economical point of view, as the expense 

 of separating the precious metal would probably exceed the value of the product. 



This mine has been extensively worked at various times, and the visitor will find shafts 

 and adits of great depth and length, and the proofs of large expenditures. Unfortunately, the 

 expectations of those who were engaged in these operations have not been realized ; and I am 

 constrained to add, that there is nothing at this locality which would warrant any additional 

 outlay. 



Several other localities of galena, although of less importance than that just noticed, occur 

 in other parts of this county. In the town of Canaan, veins of lead ore have been found, 

 one or two miles south of Whiting's pond. The ore is fine grained, and is mixed with yellow 

 blende, and with black and yellow copper. There is also a similar vein in the town of Cla- 

 verack, and the same mineral has been found in several places in New-Lebanon.* 



Dutchess County. There is a thin vein of galena in the southwest corner of the town 

 of Northeast, which is probably a continuation of some of those noticed in the county of 

 Columbia. On the farms of Judge Bockee and Mr. W. Bryan, are several openings, from 

 which considerable quantities of ore have been obtained. These mines are said to have been 

 worked as early as the year 1740, by a company of Germans, and the ore sent to Bristol, 

 England. They were, however, soon abandoned, but were re-opened during the revolution, 

 when a few tons of lead were again obtained. Since that time they have been entirely 

 neglected. 



Excavations are to be seen on the lands of Judge Bockee, at short intervals for half a mile, 

 showing numerous small veins of galena, associated with the sulphurets and carbonates of 



" Mather. New-York Geological Reports, 1838. 



