THE MINING AND QUARRY INDUSTRY I906 59 



gated the sum of $999,678, as compared with $1,037,210, represented 

 almost entirely by bluestone. The monumental stone, principally 

 marble, was valued at $103,219, against $187,988. The value of the 

 stone quarried for purposes other than those given, including lime, 

 furnace flux, paving blocks, riprap, rubble, etc., was $1,557,192 as 

 compared with $1,491,317 in 1905. 



Granite 



Under the head of granite are included the coarse crystalline rocks 

 in which silicates are the predominant minerals. Besides granite in 

 the true sense the group comprises such rocks as syenite, diorite, 

 anorthosite and various kinds of gneisses, all of which are found in 

 New York State and are commercially utilized for building or other 

 purposes. The variety known as trap is, however, treated by itself. 



The aggregate value of the products of the granite quarries in 

 1906 amounted to $255,189. Building stone was much the largest 

 item in the total, with a valuation of $231,190. Among the other 

 uses to which the product was put and the values of each were: 

 monumental stone, $4119; crushed stone, $13,980; rubble and riprap 

 $2423 ; paving blocks, curbing and miscellaneous, $3477. The 

 quantity of crushed stone reported was 16,800 cubic yards. West- 

 chester county alone made an output valued at $172,845, consisting 

 principally of building stone. The remainder of the production was 

 distributed among the following counties : Clinton, Fulton, Herki- 

 mer, Jefferson, Orange, Putnam and Warren. There were 19 quar- 

 ries in all that were operated. In 1905 the value of the product was 

 $253,955 of which Westchester county contributed $142,815. 



Among the new developments during the past year was the open- 

 ing of large quarries at Little Falls to supply crushed stone. The 

 material used is syenite, similar to the Adirondack syenite occur- 

 rences of which the Little Falls mass is an outlier. The crushing 

 plant erected by the Power & Mining Machinery Co. on the north 

 side of the Mohawk river is the largest in the State, the capacity 

 being 4000 cubic yards a day. The output will be used for road 

 metal, railroad ballast and concrete. It is planned to erect a plant 

 for making concrete brick from the screenings. The West Shore 

 Stone Co. has opened quarries and erected a crushing plant on the 

 south side of the river at Little Falls. 



A quarry of monumental stone has been started near Ausable 

 Forks, Clinton co. The material is a green syenite of attractive 

 appearance. 



