198 NEW YORK STATE MUSEUM 



the waste to the dump. Both openings extend downward vertically, 

 both with the bedding, which dips easterly about 40° in the south 

 quarry and westerly 50° to 60° in the north, the dip reversing 

 within a distance of 100 feet. There are few open joints or fissures, 

 though one rather conspicuous opening in the southern quarry ex- 

 tends to a depth of 50 feet. There are occasional bunches of sili- 

 cates and a little pyrite appears on some of the joint surfaces. 



Fig. 17 South Dover marble in thin section. Enlarged 10 times 



The South Dover Marble Co. has a cutting and polishing works 

 at Wingdale station with which the quarries are connected by an 

 electric tram. The product has been used in many large structures 

 in New York and the eastern cities, and is one of the standard 

 architectural materials of this countyr Some of the important 

 buildings in which it may be seen are the Tiffany Building, Blair 

 Building, Stock Exchange (interior). Masonic Temple and Charles 

 Building in New York, Essex County court house in New Jersey, 

 Munsey Building and House of Representatives office building in 

 Washington. 



Dover White Marble Company's quarry 



The quarry recently worked by the Dover White Marble Co. lies 

 on the east bank of Tenmile creek ij^ miles northwest of the South 

 Dover Company's quarry. It is a small side-hill opening in a white 

 dolomitic marble which is streaked or banded with gray. The bands 

 consist of quartz and sericitic layers, arranged parallel to the 



