Elbaite crystal, 6.1 cm, from the Gillette quarry, Haddam Neck, Middlesex County, Connecticut. Ex collections of the American Museum of Natural History, William Boyce Thompson (1869–1930), Lawrence H. Conklin (1933–2016), Richard Hauck, and Bruce Jarnot. László Kupi photo.
A collector's guide to Haddam, USA: its geology, mining history and notable minerals, illustrated with the 33 specimens documented from this locality on EarthWonders.
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