306 NEW YORK STATE MUSEUM 



The flow of water into the workings is extensive and the cost of pump- 

 ing out the entire body down to that level would amount to a large 

 sum. Samples of ore taken from the upper levels indicate a high 

 percentage of galena, rather more of it than in the other deposits; 

 but its general appearance otherwise is very similar to that found 

 at the other localities. 



North of Guymard, near Otisville is a deposit once worked by the 

 Washington Mining Co. It was prospected in 1906-7 by the Phoenix 

 Lead Co. of Paterson, N. J., but no commercial operations were 

 undertaken. Another locality for the occurrence of these ores is 

 near Spring Glen, described by Mather as " situated on the Shawan- 

 gunk mountain about one mile east of Redbridge, and six or seven 

 from Wurtsboro; at an elevation of 600 or 700 feet above the valley." 

 Work was carried on by the North American Coal and Mining Co. 

 in 1838 and for sometime afterward, but it is not known what 

 results were obtained. 



ZINC IN PALEOZOIC LIMESTONES 



A number of localities exist where sphalerite occurs in small 

 amounts in association with bedded limestones, usually as a filling 

 of small solution cavities or occupying joints and narrow fractures 

 that intersect the strata. The Beekmantown and Trenton beds 

 bordering the Adirondacks contain many examples of this association. 

 The gangue is calcite and the blende is frequently accompanied by 

 galena and pyrite. The ore not infrequently shows good values and 

 would repay extraction if obtainable in quantity. 



Just west of Saratoga Springs, in an old limestone quarry, a vein 

 of nearly pure sphalerite was to be seen a few years ago. The vein 

 was perhaps 50 to 60 feet long and from a few inches to a foot wide. 

 It was widest in the middle and gradually contracted toward either 

 end, a typical " gash " vein. The sphalerite was of translucent 

 light yellow color, low in iron and unmixed with pyrite. 



Near Salisbury Corners is an occurrence of sphalerite in Trenton 

 limestone, filling solution cavities and fissures in the latter. The 

 mineralization is more extensive than in the usual occurrences of 

 the kind. The sphalerite is yellow and translucent to dark opaque 

 and is associated with galena and chalcopyrite with calcite as gangue. 



Martinsburg, Lewis county, is listed as a locality for sphalerite 

 with galena and p5rrite. 



About 2 miles south of Sprakers Basin sphalerite of light yellow 

 color is found in association with galena. 



