350 NEW YORK STATE MUSEUM 



broken region, they are common and might throw one off the track. 

 As already mentioned cross gulches are often caused by faults. 



Iron Mines of Westport. There are at present no producing 

 mines in Westport, and such as have been opened have been idle for 

 many years. Except perhaps the second bed at Nichols Pond all 

 that we visited were clearly in the gabbro series and gave thus every 

 reason to infer that they are titan if erous and such analyses as have 

 been available, have carried out this impression. 



The Nichols Pond Mines. These are situated high up on a 

 mountainous ridge, above Lake Champlain, and just north of Nichols 

 Pond. There are two beds ; the southerly one is in gneissic gabbro, 

 and is about 9' thick. It strikes nearly East and West, and dips 

 south about 80°. The ore is magnetite mixed with hornblende and 

 is lean. The second bed lies more to the north, and shows the follow- 

 ing section, with a strike and dip like the last. 1, Hanging wall 

 gneiss. 2, Ore 12-15', shot ore consisting of magnetite and quartz. 

 3, Lean Ore not worth separating 20', but of same general character 

 as 2. 4, Compact feldspathic rock, 15'. 5, Lean shot ore and quartz 

 same character as 2, not worked. 6 Foot wall coarse gneiss. There 

 was a large separator in operation some 25 years ago at Nichols 

 Pond, and a tramway ballasted with tailings runs down to the high- 

 way to the eastward. As stated by Professor Smock, (Bull. N. Yl 

 State Mus. No. 7. p. 36) these mines are in lots 166 and 168 of the 

 Iron Ore Tract and on Campbell Hill. 



The Ledge Hill Mines. This name may not be the most com- 

 mon or correct one, but it is the one given us in Westport. The 

 mines are near the summit of a hill, two miles west of Westport 

 and are several hundred feet above Lake Champlain. They are in 

 gabbro of a gneissic habit, but at times quite massive at points not 

 far from the ore. There are two ore bodies. The ore is richest in 

 the middle and becomes lean towards the walls, with abundant horn- 

 blende and garnets. In the lowest opening there are 4-6' of rich- 

 est ore. Fifty feet higher up there is another opening on the same 

 ore. The strike is east of north and the dip is bigh co the west. A 

 little to the east is a second ore body, opened by a cut about 6' feet 

 wide at the bottom. The walls are gabbro. The mines are in lot 

 163 of the Iron Ore Tract. 



The Split Rock Mines. These are opened in Split Kock 



