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State Route 118 Bantam River bridge, Litchfield, Litchfield Co., Connecticut, USA

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Latitude & Longitude (WGS84): 41° 44' 50'' North , 73° 10' 45'' West
Latitude & Longitude (decimal): 41.7472222222, -73.1791666667


"Pinite" (later found to be very-fine-grained micaceous pseudomorphs of cordierite) occurred here both massive and as crystals as first described by Brace (1823) without attribution to any place other than "Litchfield":

Some imperfect crystals appeared on the surface of the mass—apparently six-sided prisms, truncated on all the angles, and, in consequence, having a cylindrical form. Associated with quartz, mica and oxide of iron.


A note by Benjamin Silliman noted their similarity to those from Haddam found here:

http://www.mindat.org/loc-23749.html listed as "chlorophyllite" or "fahlunite".

It was noted in Robinson (1825).

Much later Gaines (1887) gave and exact location for them:

Just east of the village of Litchfield below the point where the road to the Naugatuck station [now state Route 118] crosses the Bantam river, there is a mill dam, the abutment at the western end of which is formed by a ledge of mica schist. Here were found fine crystals of pinite, and in quartz veins a few fine specimens of washingtonite [ilmenite].


The dam is long gone, and there is a new bridge, but the outcrop remains with much staurolite and some ilmenite visible as of 2012.

Mineral List


3 valid minerals.

The above list contains all mineral locality references listed on mindat.org. 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 mindat.org 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.

References

Brace, John P. (1823), Localities of minerals. American Journal of Science: s.1, 6: 250-1.

Robinson, Samuel. (1825), A Catalogue of American Minerals, With Their Localities; Including All Which Are Known to Exist in the United States and British Provinces, And Having the Towns, Counties, and Districts in Each State and Province Arranged Alphabetically. With an Appendix, Containing Additional Localities and a Tabular View. Cummings, Hilliard, & Co., Boston.

Gaines, M. R. (1887): Notes on some Mineral localities in Litchfield, Connecticut, American Journal of Science: series 3: 34: 406-407.

 
Mineral and/or Locality  
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