30 NEW YORK STATE MUSEUM 



Fowler, St Lawrence county. A dike of pegmatite carrying 

 finely crystallized feldspar is found on the farm of C. W. Denesia 

 about 2 miles south of Fullerville in the town of Fowler. It is only 

 exposed, however, over a very limited area and where seen its 

 width is not over 8 feet. The feldspars are developed in prismatic 

 crystals from 2 to 3 feet long. They are inclosed in a ground 

 mass of intergrown quartz and feldspar with which tourmalin and 

 biotite are associated. They consist of a deep red microcline and a 

 pinkish variety which is an intergrowth of microcline and alhite. 

 Unless the dike proves of greater magnitude than is indicated by 

 the exposed part it would hardly he workable. 



Fine, St Lawrence county. The occurrence of pegmatite on 

 the farm of Fred Scott, about 4 miles north of Oswegatchie in the 

 town «of Fine, is of interest particularly for the associated min- 

 erals. These include fluorite, hornblende, pyroxene, pyrite, chal- 

 copyrite and titanite in well-crystallized individuals. The feldspar 

 occurs in pink, white and greenish varieties, evidently represent- 

 ing both the potash and lime-soda series. It is too much intergrown 

 with the other minerals to have commercial value. 



GARNET 



The Adirondack garnet mines reported an output last year of 

 4285 short tons with a valuation of $121,759. This was less than 

 in 1910 when the total amounted to 5297 short tons valued at 

 $151,700 but may be considered as about' the average outturn. The 

 production has varied from year to year according to the activity 

 of the market but at no time has taxed the full capacity of the 

 mines. In fact the demand for abrasive garnet has shown very 

 little tendency to increase, and there would seem to be little oppor- 

 tunity at present ror the development of new sources of supply. 



No important changes in the industry have taken place during 

 the past year. The principal producers, as heretofore, were the 

 mines in the vicinity of North River. The largest factor in the 

 industry has been for some time the North River Garnet Co. with 

 mines and milling plant on Thirteenth lake, Warren county. The 

 other active mines in that section included those on Gore mountain 

 owned by H. If. Barton & Son Co. and those of the American Glue 

 Co., a little farther north in Essex county. At Riparius, the War- 

 ren County Garnet Mills have operated in a small way. In north- 

 ern Essex county near Keeseville the American mine shipped some 

 material. 



The conditions surrounding the occurrence of garnet in the 

 Adirondacks have been described in several papers and in previous 



