THE MINING AND OUAKRY INDUSTRY I915 59 



Granites and the associated crystalline silicate rocks are re- 

 stricted in New York to two well-defined areas — the Adirondacks 

 in the north and the Highlands in the southeast. A detailed account 

 of these materials, their characters, distribution and economic 

 development is given in " Quarry Materials of New York," issued 

 as Bulletin i8i of the New York State Museum.^ 



The quarrying of granite has never attained the importance 

 which seems commensurate with the resources and large markets 

 of the State. Much of the output reported in recent years has been 

 by contractors on local engineering works, rather than by permanent 

 enterprises established for the supply of stone to the general market. 

 The value of the product thus is difficult to establish. In the last 

 year or two there has been manifest a more general interest in the 

 industrial development of the granite resources which promises to 

 give a new impetus to the production. 



The output in 191 5 was valued at $422,597 and consisted of 

 building stone, $261,091; monumental, $19,926; paving blocks, 

 $78,450; crushed stone 74,050 cubic yards, $61,965; other kinds, 

 $1165. A large part of the building stone was quarried by a single 

 firm for the construction of the Kensico reservoir at Valhalla, 

 N. Y., which is built of cyclopean masonry. 



Activity in the St Lawrence River district was confined to the 

 operations of J. Leopold & Co. at their Alexandria Bay quarries 

 where paving blocks were made. The quarries of the Picton Island 

 Red Granite Co. were closed down. The Wisconsin Granite Co., 

 one of the largest firms in the granite trade, has secured property 

 on Wellsley island, where it will quarry stone for paving blocks, 

 and has erected a crushing plant at Alexandria Bay. 



The syenite quarries at Ausable Forks, which supply monumental 

 stone of dark green color, were operated on about the usual scale. 

 The Champlain Green Granite Co. and Fred A. Carnes were the 

 producers. 



The anorthosite quarries in the northern Adirondacks are among 

 the properties that should contribute materially to the output, once 

 the stone becomes familiar to the public. The material is nearly 

 pure feldspar, white to grayish green on the rock face and a beauti- 

 ful lustrous green on polished surfaces. A dark gray gneissic 

 granite was quarried by E, F. Edel near Gloversville, principally 

 for paving blocks. 



^January i, 1916. 



