ELIZABETHTOWN AND PORT HENRY QUADRANGLES I41 



in one pit has a long dimension in a northeasterly direction and has 

 been exposed in a cut 75-100 feet long and 30—40 feet deep. The 

 second mass has a pit about 25 by 8 feet which is entered by a cut 

 at right angles to its long dimension, and 15 by 15 feet in size. The 

 pits can not be far froui the 900 or 1000 foot contour. The wall 

 rc^ck is typical gabbro and while no analyses have been made of 

 the ore, it has all the associations of the titaniferous varieties, is 

 dense and characteristic in the specimens and is believed without 

 doubt to belong to this variety. The name " Ledge hill " may noc 

 be the best one but it was given the writer in early work in the 

 region. The locality is in lot 163 of the Iron Ore tract. The notes upon 

 the pits were first published in Bulletin 14 of the Xew York State 

 Museum, page 350, but the openings were again visited in 1907. 



In the southeastern foot of this same hill, approximately on the 

 700 foot contour, and a short distance from the highway, there is 

 another small pit in a very basic, hornblendic gneiss. Lean, dense 

 magnetite is exposed which is apparently titaniferous. It is a small 

 pit and no analyses have been made. 



The remaining occurrences of the titaniferous ores are in Eliza- 

 bethtown and Aloriah. 



Tunnel Mountain mines. The Black river heads in Lincoln 

 pond in the southeastern portion of Elizabethtown and thence flows 

 east of north through a wild and narrow pass in which was 

 formerly located the old forge and little village of Kingdom. The 

 relations both of the pond and the river are now somewhat changed 

 from those depicted on the map, because of the damming of the 

 river a few years ago and the erection of an electric power plant 

 for the mines at Mineville. The pond is much expanded and the 

 roads have been somewhat changed. At the point where the river 

 begins to form the boundary between Elizabethtown and Westport, 

 it rounds the foot of an eminence on the northwest, which is called 

 Tunnel mountain, from an adit which was run many years ago 

 near the summit. It was intended that the adit should tap a large 

 body of ore which outcrops higher up. 



At the eastern foot of Tunnel mountain, two small pits have been 

 opened which at the time they were visited were on land belonging 

 to John Tryan. The first was 15 feet square by 10 feet deep, and 

 in lean ore which gradually shades into wall rock. It contained 

 much biotite. A thin section revealed titaniferous magnetite, 

 olivine, brown hornblende, deep brown biotite, garnet and clear. 



