GKANITIC ROCKS 



377 



Union Valley, Putnam County. — The quarries of — Jacksonf 

 and E. C. Ganung are located four miles from Croton Falls, and in 

 the town of Carmel. The stone has a striped appearance, due to 

 black mica and white feldspar alternating in thin layers. Its 

 main use is for posts and foundations ; some of it has been used 

 for monuments and buildings. 



Ramapo, Rockland County. — The quarry of Henry L. Pierson* 

 is in the hillside near the 1ST. Y., L. E. and W. K. R., south of the 

 village. The stone is a quartz-syenite, consisting of orthoclase, 

 quartz and hornblende. It is especially suited for heavy masonry 

 on account of its strength and the large size of blocks which can 

 be obtained. Some of this stone has been used for monumental 

 work, and some for the Erie railway bridges. 



Sufferns, Rockland County. — Granite for cemetery posts and 

 monumental bases has been quarried in a small way from ledges 

 on the roadside west of Sufferns station. It is greenish-gray 

 in color, hard to cut and dress, but is durable. 



Peekskill, Westchester County. — There is a granite quarry 

 on the bank of the river two miles northwest of Peekskill. 



Iona Island, Rockland County. — There is a large quarry on 

 Round Island near Iona Island, owned by Daniel E. Donovan, 

 whence stone is obtained for heavy masonry and for macadam 

 material. A large amount is sold annually for road-making. 

 Some of the stone used in the New York and Brooklyn bridge 

 came from this quarry. 



West Point, Orange County.— West of the military academy 

 buildings a gneissoid granite has been quarried at several points 

 for the construction of government buildings. The stone occurs 

 in thick beds and the solid, outcropping ledges indicate the dura- 

 bility of the stone where exposed to the weather. The library 

 building, the old riding academy, three of the professors 

 residences and the long lines of retaining wall are constructed 

 of the stone taken from these quarries. 



Garrisons.— King's Quarry. A large quarry of fine gray 

 granite is operated by the King Granite Company. 



* Not now in operation. 



tFull name not obtained. 



