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Prehnite from
Roncari Quarry (Tilcon Quarry), East Granby, Hartford Co., Connecticut, USA

Description
Quality of samples:not specified / average specimens
Confirmation
Validity:Believed Valid
References
References:Wolfe, C. W. and Vilks, I. (1960): Pseudomorphs after Datolite, Prehnite and Apophyllite from East Granby, Connecticut. Am. Mineral. 45, 443-447.; Rocks & Minerals (1995) 70:396-409
Data
Mineral Data:Click here to view Prehnite data
Locality Data:Click here to view Roncari Quarry (Tilcon Quarry), East Granby, Hartford Co., Connecticut, USA
Photo GalleryView Gallery (37 photos)
Nearest other occurrences of Prehnite
0.9km (0.6 miles) State Route 20 road cut, East Granby, Hartford Co., Connecticut, USA
4.0km (2.5 miles) Tariffville Gorge, Bloomfield, Hartford Co., Connecticut, USA
4.0km (2.5 miles) Tariffville Gorge, Simsbury, Hartford Co., Connecticut, USA
12.3km (7.6 miles) Talcott Mountain, Simsbury, Hartford Co., Connecticut, USA
17.1km (10.6 miles) Talcott Mountain, Avon, Hartford Co., Connecticut, USA
21.2km (13.2 miles) West Springfield, Hampden Co., Massachusetts, USA
23.9km (14.9 miles) Farmington Trap Rock Quarry, Farmington, Hartford Co., Connecticut, USA
24.5km (15.2 miles) State route 4 road cut, Farmington, Hartford Co., Connecticut, USA
24.7km (15.3 miles) Balf Quarry, Newington, Hartford Co., Connecticut, USA
27.0km (16.8 miles) Newington, Hartford Co., Connecticut, USA
27.9km (17.3 miles) 2368-2384 Berlin Turnpike (Former Hartford Drive-In), Newington, Hartford Co., Connecticut, USA
30.2km (18.8 miles) State Route 372 construction site, Plainville, Hartford Co., Connecticut, USA
31.4km (19.5 miles) State Route 9 - Ellis Street and State Route 72 interchanges (State Route 72 roadcut), New Britain, Hartford Co., Connecticut, USA
34.9km (21.7 miles) State Routes 9 and 372 interchange, Berlin, Hartford Co., Connecticut, USA
37.4km (23.2 miles) State Route 2 roadcut, Marlborough, Hartford Co., Connecticut, USA
38.1km (23.7 miles) Thomaston Dam railroad cut, Thomaston Dam, Thomaston, Litchfield Co., Connecticut, USA
41.8km (26.0 miles) Palmer, Hampden Co., Massachusetts, USA
43.3km (26.9 miles) Pillow lava locality, Meriden, New Haven Co., Connecticut, USA
43.6km (27.1 miles) Hubbard Park Quartz locality, Meriden, New Haven Co., Connecticut, USA
44.2km (27.5 miles) Notch Quarry (Lane Quarry; Amherst Quarry; Round Mountain Quarry), Amherst, Hampshire Co., Massachusetts, USA
44.2km (27.5 miles) White Rocks Quarry (Consolidated Quarry), White Rock District (White Rocks District), Middletown, Middlesex Co., Connecticut, USA
44.5km (27.6 miles) White Rock District (White Rocks District), Middletown, Middlesex Co., Connecticut, USA
45.7km (28.4 miles) US Route 6 Willimantic Bypass expressway road cuts, Coventry, Tolland Co., Connecticut, USA
45.9km (28.5 miles) Unnamed Zeolite occurrence (1), Wadsworth Falls, Middlefield, Middlesex Co., Connecticut, USA
46.2km (28.7 miles) Interstate 84 (I-84; I-86; State Route 15; Wilbur Cross Highway), Union, Tolland Co., Connecticut, USA
46.9km (29.1 miles) Belchertown, Hampshire Co., Massachusetts, USA
49.3km (30.6 miles) Cheshire Traprock Quarry, Cheshire, New Haven Co., Connecticut, USA
50.9km (31.7 miles) Durham, Middlesex Co., Connecticut, USA
52.0km (32.3 miles) Reed's Gap Quarry (New Haven Trap Rock quarry; Tilcon Durham quarry), Durham, Middlesex Co., Connecticut, USA
53.9km (33.5 miles) Wallingford, New Haven Co., Connecticut, USA
Mineral and/or Locality  
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