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Danbury, Fairfield Co., Connecticut, USA

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Latitude & Longitude (WGS84): 41° 23' 41'' North , 73° 27' 16'' West
Latitude & Longitude (decimal): 41.3947222222, -73.4544444444
Other regions containing this locality:North America

A city first incorporated as a town in 1702. Most famous mineralogically for the danburite type locality (see

Its bedrock geology is very complex because the city lies over a folded section of Cameron's Line, a major thrust fault separating Ordovician Ratlum Mountain schist of oceanic origin (and intruded Brookfield diorite gneiss) under Shelter Rock from metamorphosed continental shelf deposits (marble, quartzite, gneiss) overlying Lauretian basement under most of the city. The Cambrian Stockbridge marble underlies low lying areas NE and SE of Shelter Rock, and under Mill Plain to the west. The Still River and Limekiln Brook generally follow these lowlands. The highlands occupying most of the north and southwest parts of the city are underlain by very resistant rocks of the Cambrian Dalton formation and the Proterozoic Laurentian gneisses, which in the southwest have been cut up by probable Mesozoic normal faulting.

Mineral List

Mineral list contains entries from the region specified including sub-localities

44 valid minerals. 1 (TL) - type locality of valid minerals.

Rock Types Recorded

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Rock list contains entries from the region specified including sub-localities

Localities in this Region

This page 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.


Manchester, James G. (1931): The Minerals of New York City and Its Environs. New York Mineralogical Club Bulletin: 3 (1): 70.

Clarke, James W. (1958): The Bedrock Geology of the Danbury Quadrangle. State Geological and Natural History Survey of Connecticut Quadrangle Report No. 7.

Januzzi, Ronald E. (1959): The Minerals of Western Connecticut and Southeastern New York. The Mineralogical Press, Danbury, Connecticut.

Pawloski, John A. (1965): Two Interesting Zeolites from Connecticut. Rocks and Minerals: 40(7): 494.

Januzzi, Ronald E. (1976): Mineral Localities of Connecticut and Southeastern New York State. The Mineralogical Press, Danbury, Connecticut.

Tschernich, Rudy. (1992): Zeolites of the World. Geoscience Press, Phoenix: 85, 154.

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

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