ECONOMIC GEOLOGY 231 



Empire Seneca Spring (M. W. Cobb, of Fredonia), Dunkirk, 

 N. Y., Chautauqua county. 



Crystal Spring (Asa D. Baker), Barrington, N. Y., Yates 

 county. 



Great Bear Spring, Fulton, Oswego county. 



Minerals Not Commercially Important 



In addition to the minerals which have already been mentioned 

 there are many deposits in New York which are not at present 

 of commercial importance. These may be roughly classified as 

 metallic minerals and non-metallic minerals. 



METALLIC MINERALS 



In this class are iron pyrites, arsenopyrite, chromite, chalcopy- 

 rite, cuprite, galenite, cerusite, sphalerite, wad or bog manganese, 

 millerite and molybdenite. The galenite and pyrites have re- 

 spectively yielded small quantities of silver and gold at certain 

 places, but at no locality in New York have enough of the precious 

 metals been found at any time to pay for the expense of extracting 

 them. From time to time capital is invested for the purpose of 

 gold or silver mining in New York, but always without practical 

 results. The experience of 50 years has .shown that neither in 

 New York nor in New England have either of the metals been 

 found in paying quantities. 



The following is a list of the principal localities at which the 

 various metallic minerals are found: 



IEON, SULPHUR, ARSENIC 



Pyrite, iron pyrites, bisulphide of iron. Anthony's nose, West- 

 chester county, mine formerly worked; Philips ore bed, 

 Phillipstown, Patterson, southeast of Carmel and near Lud- 

 ington mills, in Putnam county; with galena at Wurtsboro lead 

 mine, Sullivan county; Flat creek, Montgomery county; near 

 Canton, St Lawrence county, in extensive beds; Duane, Franklin 

 county, large bed; Martinsburg, Lewis county; Eighteen-mile 

 creek, Erie county, and many other localities, sparingly in rocks. 



