102 



NEW YORK STATE MUSEUM 



two attempts to mine this mineral within the quadrangle, this having 

 been in a small opening in the little area of Grenville limestone 

 one-half of a mile south-southeast of Franklin Falls. The lime- 

 stone contains numerous flakes of graphite, but apparently a vein 

 of fibrous graphite less than an inch wide in the limestone was 

 the center of interest. 



Mr Ailing has described a recent attempt to develop a graphite 

 mine 2^ miles west-northwest of Wilmington on the side of 

 Wilmington mountain.^ This work has been done since the writer's 

 survey of the region. According to Ailing the last operations were 

 in the spring of 191 7. Several prospect pits or small shafts were 

 sunk. The main rock is a coarsely crystalline Grenville limestone 

 with large flakes of graphite. Associated with this limestone are 

 some green pyroxene and red garnet rocks, and some basic peg- 

 matite. 



1 N. Y. State Mus. Bui. 199. 1918, p. 36-37. 



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