THE IRON SERIES (IN PART). 77 



are locally quite productive in Blair County, affording several great 

 banks of ore. (Report MM, 196, M3, p. 33.) The Oriskany is of 

 greater importance in Virginia than in Pennsylvania. East of 

 these last mentioned exposures, and in southern Carbon County, is 

 a bed of paint ore between the Oriskany and the Marcellus. (C. 

 E. Hesse, " The Paint-Ore Mines at Lehigh Gap," M. K, New York 

 meeting, 1890.) The Marcellus is the most productive of the Devo- 

 nian stages. It affords considerable ore in Perry County (Report 

 MM, p. 193 ; M3, p. 29), Juniata County, Mifnin County, Hunting- 

 don County (Report M, p. 66 ; MM, p. 194 ; M3, p. 140), Fulton 

 County (Report M3, p. 42), and Franklin County (Report M3, 

 p. 1). All these are in southern Pennsylvania. Lesley states 

 (Iron Manufacturers' Guide, p. 650) that the ore is weathered car- 

 bonate. As shown under Example 4, beds of carbonate ore occur in 

 Ulster County, New York, in the Marcellus. (Additional details 

 on the above Pennsylvania deposits will be found in the geological 

 reports on the particular counties.) 



2.01.12. As already remarked, the greater part of the limonites 

 in Virginia belong under the Siluro-Cambrian division and are there 

 described, but in the James River basin, on Purgatory and May's 

 Mountains, there are deposits in sandstones of the Clinton. (J. L. 

 Campbell, The Virginias, July, 1880.) Other limonite beds occur 

 in the Oriskany on Brushy Mountain (Longdale mines), on Rich 

 Patch Mountain (Low Moor mines, involving also the Medina), on 

 Warm Spring Mountain, and on Peter Mountain. In the Shenan- 

 doah Valley, on Massanutton Mountain, the limonite is referred by 

 Prime to the Clinton stage. (The Virginias, March, 1880, p. 35.) 

 On North Mountain it lies in the Oriskany, according to Camp- 

 bell (The Virginias, January, - 1880, p. 6), and on the Great 

 North Mountain in the Upper Silurian. Considerable oxide of 

 zinc collects in the tunnel heads of the furnaces running on Low 

 Moor ores, indicating the presence of this metal in the limonite. 1 



The iron ores in Kentucky are found in three widely separated 

 districts, one near Greenup, in the northeastern corner of the State, 

 known as the Hanging Rock region ; the second near the central 

 part along the Red and Kentucky rivers, known as the Kentucky 

 and Red River region ; and the third in the southwestern part near 



1 E. C. Means, "Flue Dust at Low Moor, Va.," M. E., 1888; E. C. 

 Pechin, " Virginia Oriskany Iron Ores," Engineering and Mining Jour- 

 nal, Aug. 13, 1892, p. 150. 



