84 



NEW YORK STATE MUSEUM 



feldspar gneiss that probably belongs to the Grenville series. The i 



garnet has a granular habit and breaks with an irregular fracture. | 



It would appear to be too fine to be available for general use, since i 



after crushing and extraction the product is practically all of the i 



smaller sizes. \ 



Production. The shipments of garnet from the Adirondacks in i 



1917 were 4786 short tons, with a value of $193,440. In 1918 ] 



the shipments amounted to 4126 short tons valued at $232,661. ! 



The total of 5840 short tons ($198,200) for 1916 set the record for I 



the Adirondack mines. ,1 



Production of garnet in New York I 



SHORT 



VALUE 



TONS 





3 045 



$104 325 



2 700 



94 500 



4 729 



159 298 



5 709 



174 800 



2 480 



79 890 



3 802 



119 190 



5 297 



151 700 



4 285 



121 759 



4 112 



117 325 



4 665 



145 445 



4 026 



134 940 



3 900 



134 064 



5 840 



198 200 



4 786 



193 440 



4 126 



232 661 



1904 

 1905 



1906 



1907 



1908 



1909 



I9I0 

 I9II 

 I9I2 



I9I3 

 I9I4 



I9I5 



I9I6 



I9I7 

 I9I8 



Considerable importations of garnet have been made in recent 

 years for use by American abrasive manufacturers. In 191 7 the 

 imports were valued at $14,456, tonnage not stated, and were all 

 entered at the port of New York. In 1918 no imports of garnet 

 were reported. The imported mineral comes from Spain where it 

 is said to be obtained from river sands and not from rock. It has 

 a fine grain and can not be substituted for all the purposes that the 

 domestic garnet serves, although it has a limited use. 



Garnet was first produced in the Adirondacks on a commercial 

 basis about 1882. The earliest operations were on Gore mountain, 

 in connection with the Rogers mine, the richest and in some respects 

 the most remarkab e of the deposits so far developed. The output 

 in the first few years did not amoimt to more than a few hundred 

 tons annually.. By 1893 it had grown, however, to 1475 tons, as 



