Interstate 691 and State Route 10 Interchange
Cheshire, New Haven County, Connecticut, USA
Key Information
Do not enter mining areas without proper authorization.
The locality at Interstate 691 and State Route 10 Interchange in Cheshire, Connecticut, is a mineral-rich site exposed by roadcuts in the early 1980s.
It features minerals like calcite, datolite, and quartz, with calcite crystals up to 2.5 cm and datolite up to 1 cm.
The geological structure includes Jurassic West Rock Diabase and Upper Triassic New Haven Formation arkosic sandstone.
There’s no specific mining history here, but Cheshire has a history of baryte and copper mining.
The area is near mineral clubs and has a rich local culture, with a humid continental climate typical of New England.
Location and Minerals
This site is in Cheshire, New Haven County, Connecticut, USA, near Meriden and other towns, making it accessible for enthusiasts. The minerals found here, such as calcite and datolite, are visually striking and perfect for collections, with quartz adding a sparkling drusy effect.
Geological and Historical Context
The exposed rocks tell a story of ancient tectonic activity, with the diabase intruding into sandstone, revealing a mix of igneous and sedimentary formations. While not a traditional mine, the locality connects to Cheshire’s mining past, especially for baryte and copper.
Local Culture and Environment
Cheshire offers a welcoming community for mineral hobbyists, with nearby clubs like the Lapidary and Mineral Society of Central Connecticut Mindat.org - Clubs. The climate, with warm summers and cold winters, frames the area’s natural beauty, ideal for exploration.