from the Harvard Mineralogical Museum
The ore body was enclosed in a gneiss, a common rock in the Hudson Highlands.
brucite, serpentine and
are just a few of the more than 90
mineral species collected at the mine.
Elwood P. Hancock (1834-1916), an active collector of New York and New Jersey minerals, purchased specimens directly from the miners in the late 19th century. His collection was acquired by The Mineralogical Museum of Harvard University in 1916 and is currently on loan to the New York State Museum.