THE MINING AND QUARRY INDUSTRY 



143 



large. The quarries are situated a short distance south and east 

 of Gouverneur. They are equipped with mills, and practically all 

 of the product is marketed as dressed stone. The value of the 

 stone varies according to color and uniformity of appearance. The 

 dark grades which are most sought for in monumental and decora- 

 tive work bring as much as $4 a cubic foot. One quarry has made 

 a specialty of supplying building stone for which a lighter and less 

 pure material is used. The marble has. an excellent reputation for 

 durability. It takes a glossy polish and owing to the strong con- 

 trast between polished and chiselled surfaces it is well suited for the 

 display of letters or designs. 



The marbles of southeastern New York occur in belts of meta- 

 morphosed Precambric and Siluric strata on the east side of the 

 Hudson river. One belt is exposed on Manhattan island and has 

 been worked at Kingsbridge. The quarries at Tuckahoe and Pleas- 

 antville, Westchester co., have supplied white and gray marbles for 

 building purposes and to a lesser extent for monumental work. 

 The Tuckahoe marble is a coarse white dolomite ; it has been em- 

 ployed in many notable structures in New York city. At Pleasant- 

 ville the marble is an impure dolomite, with layers resembling that 

 at Tuckahoe. It has a very course texture and is known as " snov/- 

 flake " marble. The best grade has been obtained from a band about 

 100 feet wide. A large quarry at South Dover, Dutchess co., 

 furnishes a similar white building marble of uniform quality. 

 Among other localities where quarries have been opened in this 

 section are Osslning, Dobbs Ferry, White Plains and Oscawana, 

 in Westchester co., and Greenport in Columbia co. At Osslning, 

 Pleasantvllle and Tuckahoe the stone has been used for making 



[nne. 



Production of marble 





VARIETY 



1904 



1905 



Building marble 



Monumental 



$279 994 

 154 673 



45 104 



$571 810 



177 557 



25 190 



Other kinds 







Total 



$478 771 



S774 557 







The quarrying of marble was carried on during the past year in 

 Clinton, Essex, Warren, St Lawrence, Columbia, Dutchess and 



