REPORT OF THE DIRECTOR AND STATE GEOLOGIST 1903 185 



Ellenville, Ulster co. This mine, which has been already re- 

 ferred to under copper pyrites, consists of a vein deposit of galena 

 and sphalerite or blende; the latter is of the variety known as 

 " black jack." The galena contains a small percentage of silver. 

 The mine is at present operated by the Ellenville Zinc Co. of 

 Newark N. J. 



At Red Bridge, Ulster co. and at Wort^boro, Sullivan co., 

 similar deposits in the same formation were worked for lead, but 

 have been abandoned for some time. 



Ancram, ColuwMa co. Galena occurs at the Ancram lead 

 mines, about 4 miles southeast of the town of that name, in two 

 or three veins from 3 to 4 feet in width in slate and limestone. 

 The ore is pooT in quality, being sparingly distributed through 

 calcite and quartz, which constitute the gangue. It is associated 

 with chalcopyrite, sphalerite and some barite. This mine was 

 formerly operated for lead. 



Besides the above mentioned localities, galena has been found 

 sparingly at the following places. 



Schoharie^ Schoharie co. Associated with pyrite. 



Ossining^ Westchester co. In dolomite, associated with other 

 lead minerals in small amounts. 



North East, Dutchess co. Near Smithfield, associated with 

 chalcopyi:*ite and sphalerite. 



Guymard, Orange co. Galena occurs at Guymard about 8 miles 

 northeast of Port Jervis. This ore occurs in a fissure vein in 

 Shawangunk grit and is associated with sphalerite. Shafts were 

 sunk to considerable depth, one being carried down 400 feet. 

 The mine has been abandoned for more than 15 years. 



Root, Montgomery co. 1^ miles southeast of Spraker's Basin. 



Vicinity of Martinshurg, Leiois co. In tbe Trenton limestone 

 associated with pyrite, sphalerite and cerussite. 



6 Zinc. Sphalerite, or zinc blende, a sulfid of zinc usually 

 carrying some iron, constitutes the only zinc-producing mineral 

 of New York. It is found chiefly associated with galena in the 

 lead deposits and was formerly mined with that mineral. The 



