J 66 NEW YORK STATE MUSEUM 



this locality, is the presence of a greenish glass which forms 

 veinlets and incrustations of microscopic size, with inclusions of 

 feldspar and magnetite. 



The ore has a fine grain and is exceedingly hard and tough. 

 When observed in hand specimens the general run seems to be 

 fairly rich, but closer examination shows, even in the richest 

 material, that there is a considerable proportion of gangue minerals, 

 The latter are distributed in small particles through the magnetite 

 in such a manner that it would prove difficult to make a satisfactory 

 separation of the material for commercial purposes. 



The following analyses, of which No. i is by W. F. Hillebrand 

 and No. 2 by George W. Maynard, give the composition of the ore. 



Fe 2 3 15.85 38.43 



FeO 27.94 23.40 



Si0 2 I 7-9o 16.46 



Ti0 2 15.66 14.70 



Cr 2 3 51 



A1 2 3 10.23 .34 



MnO tr. .23 



CaO 2.86 3.54 



MgO 6.04 2.13 



P 2 O s -- : °4 



V 2 O s 55 



C0 2 10 



S 14 



H 2 1.33 



99.15 99.23 



Iron 32.82 32.59 



Titanium 9.40 8.82 



LINCOLN POND MINE 



The Lincoln pond mine, locally called the Kent mine, is about 

 5 miles northwest of Mineville, not far from the highway leading 

 to Elizabethtown. It consists of a pit about 75 feet long by 15 

 feet wide, with a shaft at one end of unknown depth. The wall 

 rock is a massive hypersthene gabbro, carrying more or less garnet. 

 The ore has the usual character of the magnetites found in this 



