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Corporate Drive road cut, Long Hill, Trumbull, Fairfield Co., Connecticut, USA - Site Photo Gallery

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Close-up of Topaz Vein

Corporate Drive road cut, Long Hill, Trumbull, Fairfield Co., Connecticut, USA

Unlike the majority of such veins in the area, these are very narrow and lack a substantial muscovite-rich zone along the contact. They are composed of mostly equal parts massive topaz (pale honey-brown color) and white quartz. the veins are typically 1 to 2 dm wide. There are only very small (~1 cm) pockets.
 © 2010 Harold MoritzPhoto ID: 301806    View Count: 427

Road cut with Topaz Vein

Corporate Drive road cut, Long Hill, Trumbull, Fairfield Co., Connecticut, USA

January 25, 2010. View of the road cut about 3 to 4 m tall, with narrow subvertical topaz vein in center. This is one of several such veins in the long cut in Collinsville Gneiss, which appear to parallel a set of similarly-oriented joints.
 © 2010 Harold MoritzPhoto ID: 301805    View Count: 284
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