124 NEW YORK STATE MUSEUM 



The pyrrhotite mine at Anthony's Nose, Westchester co. may be 

 mentioned in this connection, as it has suppHed material for sulfuric 

 acid making. The deposit is of lenticular form, 20 to 30 feet thick, 

 inclosed in acid gneiss. It was operated during the period from 

 1865 to 1875. The workings extend 50 feet or more on the strike 

 and to a depth of 300 or 400 feet. The ore contains a small per- 

 centage of nickel. 



The production of pyrite in 1901 amounted to 10,100 long tons, 

 valued at $40,465. In the previous year the output was 5275 long 

 tons, valued at $20,820. The supply was derived entirely from the 

 mines in St Lawrence county. 



Bibliography 



Beck, Lewis C. Mineralogy of New York. 1842. p. 387 

 Whitlock, H. P. N. Y. State Geol. 23d An. Rep't. 1904. p. 180. 



QUARTZ. 



Quartz is obtained at present near Bedford, Westchester co. It 

 belongs to the massive variety and occurs nearly pure in veins and 

 mixed with feldspar and pegmatite. It varies from white to smoky 

 gray, or more rarely has a reddish or rose color. The country rock 

 is porphyritic gneiss. Ordinary quarry methods are employed in 

 working the deposits. The product has been shipped largely to 

 the potteries at Trenton, N. J. for use in making white earthenware 

 and porcelain, but of late years a more important application has 

 been the manufacture of wood filler and silicate paint. The Bridge- 

 port Wood Finishing Co. of New Milford, Ct. is the largest 

 producer. 



Quartz veins are very common in the Adirondacks, where they 

 are associated with gneisses and schists and sometimes attain large 

 proportions. In the southeastern part from Fort Ann to Port 

 Henry, there are a number of occurrences that have furnished mate- 

 rial for wood filler, which at one time wa's manufactured near Fort 

 Ann. For several years, however, no production has been made 

 from this section. 



SALT 



Salt has long been one of the chief mineral products of the State. 

 The New York industry commands extensive markets which has 

 enabled it to maintain a position of commercial prominence not- 

 withstanding the many new sources of supply that have been 

 developed in recent years. 



The salt deposits are associated with strata belonging to the 

 Salina stage of the Upper Siluric. The beds comprise shales, lime- 



