Reed's Gap Quarry (New Haven Trap Rock quarry; Tilcon Durham quarry), Durham, Middlesex Co., Connecticut, USA
Latitude: 41°28'11"N
Longitude: 72°44'21"W
This basalt (trap rock) quarry is located 7.1 km (4.4 miles) ENE of Wallingford center, New Haven County, and some references such as Ryerson (1972) place it in this town. Although it is on Wallingford's eastern border, it is however, mostly in Durham, Middlesex County and it was referred to by Tilcon as their Durham quarry in Brunet (1980), but has a Wallingford address on Tilcon's web site. It is best known for its fluorite crystals, a rarity in trap rock from Connecticut. Most good minerals occur in open cracks rather than in gas vesicles.
References
- Brunet, William M. (1980): Minerals of the Trap Rock Ridges of the Connecticut Valley With Emphasis on Reed’s Gap Quarry Near Durham. Rocks and Minerals, Volume 55, Number 6.
- Henderson, William A. (1995): Microminerals of Connecticut; Rocks & Minerals: 70: 420-425).
- Rocks & Minerals (1995): 70: 396-409.
- Ryerson, Kathleen H. (1972): ROCK HOUNDS GUIDE TO CONNECTICUT.
- Schairer, J. F. (1931): The Minerals of Connecticut. State Geological and Natural History Survey, Bulletin 51, Hartford Conn.
Mineral List
16 entries listed. 11 valid minerals.
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