Corporate Drive road cut, Long Hill, Trumbull, Fairfield Co., Connecticut, USA
Road cut in Collinsville Gneiss exposed several narrow (few dm wide), cross-cutting topaz-quartz-muscovite-fluorite veins similar to those exposed in nearby Tungsten Mine Park and Old Mine Plaza. The veins lack the typical muscovite border zone of those localities and are nearly equal parts topaz and quartz.
Photo: 2010 Harold Moritz
| Fluorite|| Muscovite|| Quartz|| Topaz|
4 entries listed. 4 valid minerals.
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