The Adirondack Region — Magnetic Iron Ores. 39 



The mine of the Peru Steel Ore Company is on the south-east side 

 of the hill. It supplies ore to that company's forges at Clintonville, 

 three miles east of the mine. Little ore has heen raised from it for 

 several years past. 



North-east of Palmer Hill is the Jackson Mine, which was worked 

 up to about 1873. 



WINTER MINE, Clinton County.— Dr. Emmons, in his Report 

 on the Second Geological District, describes the Jackson, Burt, 

 Mace, Finch and Winter Veins. * 



They are opened in the towns of Au Sable and Black Brook, north 

 and north east of Palmer Hill. They have been idle for many years. 



ARNOLD HILL MINES, Au Sable, Clinton County. — These 

 mines are situated on the north-east slope of Arnold Hill, and 

 one and one-half miles west of Ferrona, a station on the Au Sable 

 branch railroad. Three parallel veins of ore are worked ; known as 

 "the Grey," " the Black," and "the Blue." The strike is north- 

 north-east. The dip is 60° to 70° west-north-west. The " shoot" 

 structure is very marked, and the " pitch " of these lenticular bodies of 

 ore is north-north-east, at an average angle of 40°. Another remarkable 

 feature in the occurrence is the clean and smooth walls ; and the rare 

 presence of any slabs of rock on roof or foot wall. The veins are 

 separated by rock — in places as much as 40 feet — between the 

 "Grey" and the "Black." 



The ore in the " Grey," or lowest bed, is medium fine-crystalline, 

 and carries some greenish mineral in it. That of the " Black " is 

 rather more friable and finer grained ; a shot ore, although some of 

 it is coarse-crystalline. It contains some apatite in small grains. 

 The blue ore is named from its bluish shade of color. It also is a 

 rich ore. Its crushed powder has a red color. There are two work- 

 ing slopes, each about 500 feet long and 500 feet apart. The whole 

 working length is nearly 700 feet. Cross drifts connect the levels on 

 the three veins. The " shoots" of ore are from three to twenty feet 

 thick. Where the pinches occur, pillars of ore are left. The vertical 

 depth, according to aneroid barometer, is 440 feet. 



The lower, or Barton mine, 1,800 feet to the north-east (Nelson 

 Bush mine of previous reports), is no longer worked. It is a large 

 ore body, whose dip is nearly vertical, Avest-north-west. The 

 magnetite occurs in thin, alternate layers with rock, so as to be 



* Geology of the Second Geological District, Albany, 1S42, pp. 304-30(3. 



