68 



NEW YORK STATE MUSEUM 



The belt of metamorphosed limestones which extends from Co- 

 lumbia county through Dutchess and Westchester tO' Manhattan 

 island contains in places a good grade of white and gray marble. 

 Quarries have been worked in the past at Ossining, Dobbs Ferry, 

 White Plains, Pleasantville, Tuckahoe, Greenport and other places. 

 Tuckahoe has been a notable locality for white marble used in the 

 buildings of New York city. At present the only active quarries 

 worked for building stone are at South Dover. The South Dover 

 Marble Co. has been the chief producer of late years and has sup- 

 plied material for many of the large structures in New York, Wash- 

 ington and other cities. The Dover White Marble Co. has recently 

 opened quarries in the same vicinity. The stone from this locality 

 possesses uniformity of grain and color and is undoubtedly one of 

 the best white marbles in this country. 



A mottled pink and gray marble suitable for interior decorations 

 is obtained from the Chazy formation at Plattsburg. The quarries 

 are operated by the Rutland-Florence Marble Co. 



Black marble — a fine, compact, black variety of the Trenton 

 limestone — is quarried for ornamental purposes at Glens Falls by 

 Finch, Pruyn & Co. who ship the stone in rough blocks. 



The production of marble in the State last year was valued at 

 v$34i,88o. The output was a little below that recorded for 1909 

 which amounted tO' $380,016, and much less than the total for 1908 

 which reached $692,857. The slackened demand for building stone 

 seems to have been mainly responsible for the decline of output, 

 though the monumental trade at Gouverneur has also been less 

 active than formerly. 



Production of marble 



VARIETY 



1908 



1909 



1910 



Building marble 



I567 444 



III 492 



13 921 



I262 934 



104 495 



12 587 



$252 965 



88 684 



231 



Monumental 



Other kinds ■. 





Total 



$692 857 



$380 016 



$341 880 





SANDSTONE 



Under sandstone are included the sedimentary rocks which ■ 

 consist essentially of quartz grains held together by some cement- ■ 

 ing substance. Among the varieties distinguished by textural 

 features are sandstones proper, conglomerates, grits and quartzites. 



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