THE MINING AND QUARRY INDUSTRY I9IO 27 



FELDSPAR 



New York is a small producer of feldspar for uses in the manu- 

 facture of pottery, roofing material, and for other purposes. The 

 industry, though long established in the State, has not developed 

 to any extent, specially with regard to the production of the higher 

 grades of feldspar suitable for pottery uses, which is insufficient to 

 meet the local demand. Most of that material required by the New 

 York potteries is brought in from ]\Iaine and other states or from 

 Canada. Many quarries that have been opened in the Adirondacks 

 and in the southeastern section have succumbed to competition 

 owing to poor facilities for shipment or to unfavorable natural 

 conditions. 



The greater part of the present output consists of roofing feld- 

 spar, which is simply a crushed pegmatite made up usually of 

 quartz, mica and other minerals in addition to the feldspar. This 

 is produced in the Adirondack region by the Barrett Manufacturing 

 Co. and the Crown Point Spar Co. which have quarries and crush- 

 ing plants near Ticonderoga and Crown Point respectively. Pottery 

 feldspar is produced by P. H. Kinkel's Sons who operate quarries 

 near Bedford, Westchester county, and by the Adirondack Spar 

 Co. with quarries near Batchellerville, Saratoga county. The Bed- 

 ford quarries have yielded the greater quantity of pottery material 

 that has been produced in the State. In addition to feldspar from 

 the latter quarries there is also a considerable production of quartz 

 which is utilized for wood filler. 



No new discoveries or developments in connection with the 

 feldspar industry were reported last year. The production was 

 somewhat under the total for the preceding year and amounted to 

 12,132 short tons valued at $46,863. In 1909 it was 13,871 short 

 tons with a value of $46,444, and in 1908 it was reported as 14,613 

 short tons with a value of $53,148. The market prices have re- 

 mained about the same ; crushed feldspar for roofing purposes aver- 

 aged about $3 a ton last year and the ground sjxir about $6 a tc^i. 



GARNET 



Hie pn^duction of abrasive garnet during i()io was 52()7 short 

 tons valued at $151,700. This represented a large gain over the 

 output in the preceding year which was reported at 3802 tons valued 

 at $119,190. It can not be said, however, that the increase reflected 

 any real expansion of the mining industry through new develop- 



