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Reynolds Bridge, Thomaston, Litchfield Co., Connecticut, USA

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Road cuts along state Route 8 expressway in the vicinity of its interchange with Waterbury Road, which crosses the Naugatuck River just to the east in the section of town thus known as Reynold's Bridge. This section of the expressway was constructed in the 1960s and opened by 1970, so the finds date from that era and the references from just after. There are local rock cuts and a small quarry along Waterbury Road as well, just east of Route 8. The cuts expose very highly deformed metavolcanic rocks of the Ordovician Collinsville Formation, though some calc-silicate rocks and pegmatites are evidently present based on Januzzi (1976, 1994) and Tschernich (1992).

Mineral List

21 entries listed. 16 valid minerals.

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.


Januzzi, Ronald E. and David Seaman (1976), Mineral Localities of Connecticut and Southeastern New York State and Pegmatite Minerals of the World. The Mineralogical Press, Danbury, Connecticut.

Alberti, A., D. Pongiluppi, and G. Vezzalini. (1982), The Crystal Chemistry of Natrolite, Mesolite and Scolecite. Neues Jahrbuch fur Mineralogie Abhandlungen: 143: 231-248.

Tschernich, Rudy. (1992): Zeolites of the World. Geoscience Press, Phoenix: 114, 266, 445, 474.

Januzzi, Ronald. E. (1994), Mineral Data Book - Western Connecticut and Environs. Mineralogical Press, Danbury, Connecticut.

Weber, Marcelle H. and Earle C. Sullivan. (1995), Connecticut Mineral Locality Index. Rocks & Minerals (Connecticut Issue): 70(6): 399.

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