, THE MINING AND QUARRY INDUSTRY I906 25 



a pegmatite dike. A quarry had been opened some 20 years ago 

 and worked for a time for the quartz which is mixed with the 

 feldspar. Only a small quantity of feldspar was taken out in the 

 past year. The operator of the quarry was Dominic Ashley of 

 Glens Falls. The combined production of feldspar and quartz in 

 New York State amounted in 1906 to 13,660 long tons valued at 

 $44,350. The total for the previous year was 17,000 long tons 

 valued at $48,500. 



GARNET 



Though there have been no new sources of supply for garnet, 

 other than those described in the previous report, the mining in- 

 dustry has shown unusual progress during the past year. The 

 demand for the mineral among abrasive manufacturers seems to be 

 expanding rapidly at present. 



The occurrence of garnet may be said to be quite widespread 

 in the Adirondacks and other regions where the rock formations 

 have a metamorphosed character. It is only seldom found, how- 

 ever, in deposits of sufficient size and richness and at the same time 

 with the proper physical qualities to warrant commercial exploita- 

 tion. There is little to be feared, apparently, from a possible over- 

 production, at least from the present mining sections. 



The output from the Adirondack region has been made by three 

 companies : the North River Garnet Co., with mines at Thir- 

 teenth lake, Warren co; H. H. Barton & Son Co., who operate 

 the deposits on Gore mountain, near North River; and the Ameri- 

 can Glue Co., with mines on Garnet peak, north of the latter locality. 

 The first named company has been the largest producer. Its new 

 mill which was first started in 1905 was in continuous operation 

 during the past year. The deposits are so situated that they can 

 be worked through the winter. At the other localities where the 

 garnet is obtained by open cutwork and hand sorting, operations 

 can not be carried on to advantage in the winter months. 



The newly discovered deposit near Keeseville, Essex co., noted 

 in the report for 1905, has been under development, but made no 

 output except a small quantity for experimental purposes. The 

 recent work has shown the deposit to be of large extent. The 

 garnet occurs in massive form, frequently more or less granulated 

 and admixed with green pyroxene. It has been used experiment- 

 ally in the manufacture of abrasive wheels, with results reported 

 as very satisfactory. The property is owned by G. W. Smith of 

 Keeseville. 



