MINERALS FROM THE IRON DEPOSITS OF NEW YORK
Iron ore discovery and mining has a long history in New York State. Smock (1889) was the first scientist to report and formulate the first classification of the iron deposits in New York. His classification based on a “geologico- geographical arrangement” included almost all the iron occurrences known at that time and all the major types such as “magnetic iron, hematite, limonite, carbonates”.
During the mining operations in the last century, the iron mines from New York were a source of exquisite mineral specimens. We have to mention here the gem quality chondrodite, titanite, and clinochlore or the spectacular magnetite crystals from Mineville, Essex County. Beck (1842) noted about the O’Neil mine, Orange County that it is “one of the most interesting localities of the crystallized variety of the magnetic iron ore.” The Tilly Foster Mine, Putnam County was the best of the iron mine mineral producers. Here, more than 130 mineral species were found and many mineral pseudomorphs were described (Dana 1874).
Beck, L. C. 1842. Mineralogy of New York. W. and A. White and J. Visscher, Albany, NY
Cook, R.B. 2007. Chondrodite, Tilly Foster mine, Brewster area, Putnam County, New York.
Dana, E. S. 1874. On serpentine pseudomorphs and other kinds from the Tilly Foster iron mine,
Dana, E. S. 1875. On the chondrodite from the Tilly Foster mine, Brewster, New York.
Dana, E. S. 1876. On the optical character of chondrodite of the Tilly Foster mine. American
Dana, J. D. 1892. A system of mineralogy. 6th edition, New York, Wiley.
Jaffe, H. W., L. M. Hall, and H. T. Jr. Evans. 1992. Wagnerite with isokite from the Benson
Leonard, B. F. and A. C. Vlisidis. 1961. Vonsenite at the Jayville magnetite deposit, St.
M. Lupulescu. 2008. Minerals from the iron deposits of New York State. Rocks & Minerals, V. 83 No 3, p. 248-266.
Nightingale, S. L. 2001. The Tilly Foster iron mine: Southeast, Putnam County, New York.
Robinson, G. W. and S. C. Chamberlain. 1984. The Sterling mine, Antwerp, New York. The Mineralogical Record 15: 199-216.
Smock, J. C. 1889. First report on the iron mines and iron-ore districts in the State of New York.
Trainer, J. N. 1938. Tilly Foster up-to-date. Rocks & Minerals 13 (10): 291-303.
Trainer, J. N. 1941. The fifth year at Tilly Foster. Rocks & Minerals 16 (4): 122-26.
Trainer, J. N. 1942. Sixth year at Tilly Foster. Rocks & Minerals 17 (1): 8-9
Barite Brucite Calcite Chondrodite with magnetite Chondrodite Chondrodite Clinochlore Clinochlore Dolomite Fluorapatite Fluorite with pyrite Goethite Goethite Goethite Hematite Hematite Hematite Magnetite Magnetite Magnetite Millerite Pecoraite Pecoraite Quartz covered with hematite Quartz with hematite Quartz Serpentine Siderite Stillwellite Stilpnomelane Strontianite Zircon