Latitude: 41°14'32"N
Longitude: 74°7'17"W
An iron mine in magnetite ore located 5 miles North of the old Greenwood Furnace (no longer on maps) & southeast of Arden, in Tuxedo. One of the Greenwood group of mines. Host rock is hornblende gneiss. Active 1870-1880. Workings featured an open cut.
This iron deposit appears to be fundamentally different from most of the many other magnetite deposits in the Precambrian rocks of the region. It is localized in a brittle fracture zone developed in a pre existing mylonite (Gates, et al , 2003). Magnetite is associated with a skarn-like mineral assemblage. The deposit may be related to a widespread, post orogenic hydrothermal event that accompanied pegmatite emplacement between circa 1005 MA and 950 MA.
Mineral List
16 entries listed. 14 valid minerals.
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References
Reis, Heinrich (1895), The Geology of Orange County, Geological Survey of New York: 454.
Clarke, John M. (1921), New York State Museum Bulletin Nos. 249-250, Magnetic Iron Deposits of Southeastern New York (Sep-Oct 1921): 44 & 97.
Gates, A.E., Valentino, D.W., Chiarenzelli, J., Gorring, M., and Hamilton, M. (2003), Field Trip to the Western Hudson Highlands; 2003 Long Island Geologists Conference, 30 p.
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