ADIRONDACK MAGNETIC IRON ORES 139 



the eastern vein, which seems to be the principal one, two pits have 

 been sunk, 330 feet apart, to a depth of about 30 feet. The indi- 

 cated width is from 8 to 12 feet. The hornblende schist forming 

 the walls is streaked by limestone, in which phlogopite, titanite 

 and coccolite are abundantly distributed in small crystals. Horn- 

 blende and pyrite are mixed with the magnetite and much of the 

 ore is lean. The two pits on the western vein indicate a width for 

 the ore of 5 feet. According to a report rendered by Mr George D. 

 Grannis, who superintended the exploratory operations, the 

 deposits have been prospected to some extent by diamond drilling. 

 One hole was put down on the north pit of the eastern vein to a 

 depth of 85 feet, all in ore. A second boring was started 100 feet 

 west of the pit for the purpose of intersecting the body at an angle 

 and encountered two veins, one 4 feet and the other 10 feet wide 

 separated by 4 feet of rock. These may represent the western 

 vein above mentioned, here split by a horse of the wall rock. 

 Another hole in line with the second but farther south showed 

 the two veins to have a thickness of 4 feet and 6 feet respectively 

 with 6 feet of rock between them. The following analyses have 

 been copied from a report on the property made by Mr Spencer 

 B. Newberry. 



1 2 3 



Iron 71.12 61.46 62.02 



Silica . 860 6.36 



Titanium tr. nil 



Sulfur .005 .025 .03 



Phosphorus .049 .009 .024 



Manganese tr. 



Lime .051 



Magnesia tr. 



Clifton Mines. The Clifton deposits are situated about 10 miles 

 north of Benson Mines, in an unsettled forested district that is 

 somewhat difficult of access. They were opened over 50 years ago 

 but have not been worked recently. A charcoal furnace was built 

 at Clarksboro by the falls of the Grasse river, 3 miles distant from 

 the mines, and was run for some time on the ore. In 1868 the 

 Clifton Mining Co., which then owned the property, erected a plant 

 for manufacturing steel by a direct process, a venture that soon 

 proved a failure. The mines were at one time connected with the 

 Rome, Watertown & Ogdensburg Railroad near DeKalb Junction 

 by a 20-mile wooden railway. 



