70 



KEMP'S ORE DEPOSITS. 



" Genesis of the Crystalline Iron Ores," Trans. JV. Y. Acad. 



Sci., II., October, 1882. Rec. 



Newton, H. " The Ores of Iron : Their Distribution with Ref- 

 erence to Industrial Centers," M. E., III. 360. 

 Pumpelly, R., and Others. Tenth Census, Vol. XV., 1886, especially 



pp. 3-17. Rec. 

 Reyer, E. "Geologic des Eisens," Oest. Zeit. f. B. und IL, 1882, 



Vol. XXX., pp. 89, 109. 

 Rogers, W. B. " On the Origin and Accumulation of the Proto- 



carbonate of Iron in the Coal Measures," Proc. Bost. Soc. 



Nat. Hist., 1856. 

 Smock, J. C. "On the Geological Distribution of the Ores of 



Iron," M. E., XII. 130. 

 " Iron Mines and Iron Ore Districts in New York," Bull. N. Y. 



/State Mus., June, 188*9. Rec. 

 Swank, J. M. Chapters on iron in Mineral Resources, U. S. Geol. 



Survey, since 1883. 



"History of the Manufacture of Iron in All Ages." 1891. 

 Whitney, J. D. "Metallic Wealth of the United States," 1854, 



p. 425. Hist. 

 " On the Occurrence of Iron in the Azoic System," A. A. A. S., 



1855, 209 ; Amer. Jour. Sci., ii., XXII. 38. 

 Winchell, N. H. and H. V. " The Iron Ores of Minnesota," Bull. 



N~o. 6, Minn. Geol. Survey. Part IV. contains an exhaustive 



review of methods of origin, and Part V. a very complete 



annotated bibliography. 



Table of the Iron Ores, Limonite, Siderite, Hematite, Magnetite, Pyrite. 



2.01.01. No one of the iron ores ever occurs pure in large 

 amounts. Only a few closely approach this condition. The largest 

 quantity of rich ore as yet mined in the United States was doubt- 

 less obtained from the Lovers' Pit opening, operated by Wither- 

 bee, Sherman & Co., on Barton Hill, near Mineville, N. Y. The 



