Io6 NEW YORK STATE MUSEUM 



No. I is from the mines formerly worked by the Ontario Furnace 

 Co., no. 2 from the Hurly ore bed, no. 3 from La Frois ore bed, 

 and no. 4 from the Bundy ore bed. 



Amenia mine. This mine is at present the single producer of 

 limonite ore in the State. It is situated near Amenia station, 

 Dutchess CO., in the well known Salisbury district. 



The ore body occurs along the contact of a black micaceous 

 schist (Hudson River series) with underlying, crystalline limestone 

 (Stockbridge) which is correlated with the Cambro-Siluric lime- 

 stones farther north and west. The strata trend a little east of north 

 and dip steeply (6o°-yo°) to the east. While limonite is the prin- 

 cipal ore some carbonate has been found in the bottom workings, 

 particularly at the south end ; its association with the ore is interest- 

 ing and substantiates the view commonly held by geologists that 

 most if not all of the deposits in the district have been formed by 

 oxidation of iron carbonate. The limonite occurs in compact 

 bodies in pockets, mixed with clay, and in spheroidal or cup-shaped 

 masses. It is crushed and washed to. remove the clay. Analyses 

 quoted by Putnam show the following composition. 



I 2 



Iron 48.28 48.99 



Phosphorus .092 .413 



Sulfur . 152 



No. I is from the Amenia mine proper and no. 2 from the adjoin- 

 ing Gridley pit to the south. The iron made from this ore was 

 formerly used in the manufacture of car wheels, gun castings and 

 materials requiring a strong, tenacious metal. 



Bibliography ~^ 



Ball, Clinton M. The Magnetic Separation of Iron Ore. Am. Inst. Min, 



Eng. Trans, v. XXV. 1895. 

 Beck, Lewis C. Mineralogy of New York. 1842. 



Emmons, E. Geology of New York: Report on Second District. 1842. 

 Hall, C. E. Laurentian Magnetite Iron-ore Deposits in Northern New York. 



N. Y. State Mus. 32d An. Rep't. 1879. 

 Hall, James. Geology of New York: Report on Fourth District. 1843. 

 Kemp, J. F. Geology of Moriah and Westport Townships, Essex County, 



N. Y. N. Y. State Mus. Bui. 14. 1895. 



The Geology of the Magnetites near Port Henry, N. Y., and especially 



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Titaniferous Iron Ores of the Adirondacks. U. S. Geol. Sur. 19th An. 



Rep't. pt 3. 1899. 



Putnam, B. F. Notes on the Samples of Iron Ores Collected in New York. 

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Smock, J. C. First Report on the Iron Mines and Iron Ore Districts in the 

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Smyth, C. H. jr. Report on the Geology of the Four Townships in St Law- 

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On the Clinton Iron Ore. Am. Jour. Sci. v.XLIII. 1892. 



