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Datolite from
O & G Southbury Quarry (Silliman Quarry; O & G No. 2 Quarry), Southbury, New Haven Co., Connecticut, USA

Locality type:Quarry
Classification
Species:Datolite
Formula:CaB(SiO4)(OH)
Comments:Present mostly as white, granular replacement of earlier chalcedony, grading to 2 mm tabular crystals or druses. Much of it replaced by prehnite.
Habit:massive, granular, to small glassy crystals
Colour:white to pale apple green
Quality for species:Poor for species, only of interest for locality collectors. (#)
Abundance at site:Common
Confirmation
Validity:Confirmed
Confirmation Methods:Visually Identified
References
References:Weber, Marcelle H. and Earle C. Sullivan. (1995): Connecticut Mineral Locality Index. Rocks & Minerals (Connecticut Issue): 70(6): 407;
Garabedian, James A. (1998), Secondary Mineralization of Half-Moon Vesicles in the Mesozoic Basalt of the O&G#2 Quarry, Woodbury, Connecticut. University of Connecticut Master of Science Thesis.
Associated Minerals Based on Photo Data:
Prehnite3 photos of Datolite associated with Prehnite at this locality.
Data
Mineral Data:Click here to view Datolite data
Locality Data:Click here to view O & G Southbury Quarry (Silliman Quarry; O & G No. 2 Quarry), Southbury, New Haven Co., Connecticut, USA
Nearest other occurrences of Datolite
3.6km (2.2 miles) O & G Woodbury Quarry (Orenaug Quarry; O & G No. 1 Quarry), Orenaug Hills, Woodbury, Litchfield Co., Connecticut, USA
16.5km (10.2 miles) U. S. Route 7 Expressway (Danbury line to Iron Works District), Brookfield, Fairfield County, Connecticut, USA
23.0km (14.3 miles) Roaring Brook, Cheshire, New Haven Co., Connecticut, USA
23.0km (14.3 miles) North Street mall, Danbury, Fairfield County, Connecticut, USA
23.8km (14.8 miles) Thomaston Dam railroad cut, Thomaston Dam, Thomaston, Litchfield Co., Connecticut, USA
24.3km (15.1 miles) Cheshire Traprock Quarry, Cheshire, New Haven Co., Connecticut, USA
27.5km (17.1 miles) Interstate 691 and State Route 10 Interchange, Cheshire, New Haven Co., Connecticut, USA
32.5km (20.2 miles) Hubbard Park Quartz locality, Meriden, New Haven Co., Connecticut, USA
33.6km (20.9 miles) Pillow lava locality, Meriden, New Haven Co., Connecticut, USA
35.4km (22.0 miles) Meriden Trap Rock Quarry (Lane's Quarry), Meriden, New Haven Co., Connecticut, USA
 
Mineral and/or Locality  
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