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Poquonock River outcrops, Long Hill, Trumbull, Fairfield Co., Connecticut, USA

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Outcrops of the Straits Schist which occur as ledges on the northwest bank of the Poquonock River in the Long Hill area of Trumbull, Connecticut contain sub-parallel, nearly vertical quartz veins. Topaz crystals, some of which are gemmy and of golden color, are present in the quartz veins. Crystals up to 15mm x 8 mm. have been collected.

Collecting commenced in 1979 during the time that Connecticut route 25 and Connecticut route 111 were under construction. Status of collecting at present is unknown.

Mineral List

2 entries listed. 2 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.


"Bedrock Geology of the Long Hill Quadrangle 1963-1965" by William Patrick Crowley, Quadrangle Report of the State Geological and Natural History Survey of Connecticut.

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