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Prehnite from
Tilly Foster Iron Mine, Brewster, Town of Southeast, Putnam Co., New York, USA

Classification
Species:Prehnite
Comments:Reported as grayish-green coatings on gneiss
Also found as perfect, colorless, glassy, prismatic micro crystals on hornblende. Occurs as an encrustation 3" x 4" in surface area (see drawings in Januzzi 1976 pg. 170).
Habit:coatings, prismatic
Colour:grayish-green, colorless
Confirmation
Validity:Believed Valid
References
References:(Januzzi, 1966, 1976, 1989) (Manchester, 1931) (Trainer, 1938, 1941) (Whitlock, 1903) (Nightingale, 2001)
Data
Mineral Data:Click here to view Prehnite data
Locality Data:Click here to view Tilly Foster Iron Mine, Brewster, Town of Southeast, Putnam Co., New York, USA
Nearest other occurrences of Prehnite
29.9km (18.6 miles) A Interstate 84 road cuts (Route 6A bypass), Newtown, Fairfield Co., Connecticut, USA
35.8km (22.3 miles) B Bates' Rock Road, Southbury, New Haven Co., Connecticut, USA
36.9km (22.9 miles) C Southbury, New Haven Co., Connecticut, USA
37.6km (23.4 miles) D Old Mine Plaza construction site, Long Hill, Trumbull, Fairfield Co., Connecticut, USA
37.7km (23.4 miles) E O & G Southbury Quarry (Silliman Quarry; O & G No. 2 Quarry), Southbury, New Haven Co., Connecticut, USA
38.4km (23.9 miles) F Rockland Lake Landing, Rockland Lake, Haverstraw, Rockland Co., New York, USA
40.3km (25.0 miles) G O & G Woodbury Quarry (Orenaug Quarry; O & G No. 1 Quarry), Orenaug Hills, Woodbury, Litchfield Co., Connecticut, USA
45.5km (28.3 miles) H Wesley Hills, Town of Ramapo, Rockland Co., New York, USA
47.3km (29.4 miles) I Piermont, Orangetown, Rockland Co., New York, USA
56.5km (35.1 miles) J Woodcliff Park (Woodcliff), Bergen Co., New Jersey, USA
56.8km (35.3 miles) K Barcla Quarry (Clark-Barrone Quarry), Woodbridge, New Haven Co., Connecticut, USA
58.9km (36.6 miles) L Pine Rock Quarry (Farnham Quarry), Hamden, New Haven Co., Connecticut, USA
61.0km (37.9 miles) M Mill Rock, Hamden, New Haven Co., Connecticut, USA
61.4km (38.2 miles) N Cheshire Traprock Quarry, Cheshire, New Haven Co., Connecticut, USA
66.3km (41.2 miles) O Foxon quarry, Foxon, East Haven, New Haven Co., Connecticut, USA
66.7km (41.4 miles) P East Haven, New Haven Co., Connecticut, USA
66.7km (41.4 miles) Q High Street and Interstate 95 interchange, East Haven, New Haven Co., Connecticut, USA
66.7km (41.5 miles) R Cinque Quarry, East Haven, New Haven Co., Connecticut, USA
67.4km (41.9 miles) S Braens Quarry, Hawthorne, Passaic Co., New Jersey, USA
68.4km (42.5 miles) T Interstate 95 and George Washington Bridge Lower Level roadcut, Fort Lee, Bergen Co., New Jersey, USA
68.8km (42.7 miles) U Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic Co., New Jersey, USA
69.1km (42.9 miles) V Wallingford, New Haven Co., Connecticut, USA
70.4km (43.7 miles) W Braen Quarry (Braen Stone Industry Quarry; Sam Braen Quarry), Haledon, Passaic Co., New Jersey, USA
70.4km (43.8 miles) X Paterson, Passaic Co., New Jersey, USA
70.4km (43.8 miles) Y Interstate 80 roadcut, Paterson, Passaic Co., New Jersey, USA
70.4km (43.8 miles) Z Hoxie's Quarry, Paterson, Passaic Co., New Jersey, USA
70.4km (43.8 miles) 0 McKiernan & Bergin Quarry (Hawkins Quarry), Paterson, Passaic Co., New Jersey, USA
71.0km (44.1 miles) 1 Hinchcliffe Stadium, Paterson, Passaic Co., New Jersey, USA
71.1km (44.2 miles) 2 Pillow lava locality, Meriden, New Haven Co., Connecticut, USA
71.3km (44.3 miles) 3 Branford, New Haven Co., Connecticut, USA
72.1km (44.8 miles) 4 Garret Street condominium construction site, Paterson, Passaic Co., New Jersey, USA
73.1km (45.4 miles) 5 State Route 372 construction site, Plainville, Hartford Co., Connecticut, USA
73.5km (45.7 miles) 6 Plainville Trap Rock Quarry (Tilcon New Britain Quarry), Plainville, Hartford Co., Connecticut, USA
73.6km (45.7 miles) 7 Riverside Quarry, Totowa, Passaic Co., New Jersey, USA
74.0km (46.0 miles) 8 Trap Rock quarry, Plainville, Hartford Co., Connecticut, USA
74.2km (46.1 miles) 9 Upper New Street Quarry (Burger's Quarry), Paterson, Passaic Co., New Jersey, USA
Mineral and/or Locality  
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