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Sterling Mine, Antwerp, Jefferson Co., New York, USA

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A former Fe mine located North of Antwerp. Reopened 1904 and closed 1910. Ore is soft, earthy hematite hosted in Precambrian quartz-chlorite schist. Produced an estimated 750,000 tons plus of ore. Workings feature an open pit (500 feet by 200 feet by 115 feet deep) plus underground workings to 200 feet deep. First identified occurrence of millerite in the US.

Many historical identifications of minerals (ankerite, ilmenite, stilpnomelane) have been shown to be incorrect. The early mineral, "chalcodite" appears to be the ferric-dominant member of the stilpnomelane group, but needs to be re-investigated. Robinson and Chamberlain (1984) showed that stilpnomelane group minerals from this location were ferric iron-rich. Three partial analyses of material of varying colors contained dominant ferric iron: green (FeO = 9.94 wt %, Fe2O3 = 25.26), green-brown (FeO = 8.46, Fe2O3 = 31.37), and golden brown (Fe) = 2.18, Fe2O3 = 35.34). "Ferristilpnomelane" was named by Winchell and Winchell (1951) for the slightly ferrian variety of the series and probably does not occur at this location. Ferrous-dominant stilpnomelane is not found at this location, either.

Mineral List

23 entries listed. 16 valid minerals. 2 erroneous literature entries.

The above list contains all mineral locality references listed on This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.


Dana, E.S. (1892) System of Mineralogy, 6th. Edition, New York: 397, 1062.

New York State Museum Bull. 223,224, Newland, David H. (July-August 1919), The Mineral Resources of the State of New York: 126, 129.

Palache, C., Berman, H. & Frondel, C. (1944), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume I: Elements, Sulfides, Sulfosalts, Oxides. John Wiley and Sons, Inc., New York. 7th edition, revised and enlarged, 834 pp.: 240.

Robinson, G.W. and Chamberlain, S.C. (1984). "Famous mineral localities: the Sterling Mine, Antwerp, New York." Mineralogical Record: 15(4): 199-216.

Rocks & Minerals (1984): 59: 223-224.

Mineralogical Record: 15(4): 199-216.

Mineralogical Record (1990): 21: 33.

Chamberlain, Steven C. (1995) Historic Mineral Feature: The First Millerite Locality in the United State: Historical Notes on the Sterling Mine, Antwerp, Jefferson County, New York. Matrix 4:82-90.

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