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Orthoclase from
Case Quarries, Portland, Middlesex Co., Connecticut, USA

Comments:Erroneously reported by old literature or casual collectors. Microcline has been verified by Cameron et al (1954) and Stugard (1958) as the only potassium feldspar for the entire Middletown pegmatite district.
Validity:Erroneously Reported
References:Schooner, Richard. (1958), The Mineralogy of the Portland-East Hampton-Middletown-Haddam Area in Connecticut (With a few notes on Glastonbury and Marlborough). Published by Richard Schooner; Ralph Lieser of Pappy’s Beryl Shop, East Hampton; and Howard Pate of Fluorescent House, Branford, Connecticut.
Mineral Data:Click here to view Orthoclase data
Locality Data:Click here to view Case Quarries, Portland, Middlesex Co., Connecticut, USA
Nearest other occurrences of Orthoclase
15.8km (9.8 miles) A Gillette Quarry (J-J Mine; Haddam Neck Quarry), Haddam Neck, Haddam, Middlesex Co., Connecticut, USA
39.9km (24.8 miles) B Norcross Quarry (Norcross Granite Gneiss Rock Quarries; Stony Creek Quarry; Castellucci Quarry), Branford, New Haven Co., Connecticut, USA
45.9km (28.5 miles) C Flatrock Quarry (Flat Rock Quarry; Crystal Mall), Waterford, New London Co., Connecticut, USA
63.3km (39.3 miles) D Rockside Quarry (Mine Hill Quarry), Mine Hill (Ore Hill), Roxbury, Litchfield Co., Connecticut, USA
68.6km (42.6 miles) E Sky Ridge railroad cut, Hawleyville, Newtown, Fairfield Co., Connecticut, USA
70.6km (43.8 miles) F U. S. Route 7 Expressway (Danbury line to Iron Works District), Brookfield, Fairfield Co., Connecticut, USA
76.7km (47.7 miles) G North Street mall, Danbury, Fairfield Co., Connecticut, USA
77.1km (47.9 miles) H New Marlborough, Berkshire Co., Massachusetts, USA
77.2km (48.0 miles) I Danbury, Fairfield Co., Connecticut, USA
85.6km (53.2 miles) J Ridgefield, Fairfield Co., Connecticut, USA
86.2km (53.6 miles) K Tyringham, Berkshire Co., Massachusetts, USA
86.5km (53.7 miles) L Hardwick, Worcester Co., Massachusetts, USA
88.9km (55.3 miles) M Becket, Berkshire Co., Massachusetts, USA
91.1km (56.6 miles) N Quabbin Aqueduct Shaft #10 locality, Hardwick, Worcester Co., Massachusetts, USA
96.2km (59.8 miles) O Clover Hill Mine, Croton Falls, Somers Township, Westchester Co., New York, USA
98.9km (61.4 miles) P Conklin Quarry, Lime Rock, Lincoln, Providence Co., Rhode Island, USA
100.4km (62.4 miles) Q Bedford, Westchester Co., New York, USA
100.4km (62.4 miles) R Baylis Quarry (Bayliss Quarry), Bedford, Westchester Co., New York, USA
105.0km (65.2 miles) S Milford, Worcester Co., Massachusetts, USA
105.6km (65.6 miles) T Diamond Hill, Cumberland, Providence Co., Rhode Island, USA
106.0km (65.9 miles) U Dalton, Berkshire Co., Massachusetts, USA
108.2km (67.2 miles) V Shaft 7, Delaware Aqueduct, Fishkill Township, Dutchess Co., New York, USA
112.2km (69.7 miles) W Ritch Quarry, Greenwich, Fairfield Co., Connecticut, USA
113.6km (70.6 miles) X Aggregate Industries Quarry (Bayer-Mingolla Quarry; Trimount Quarry), Ashland, Middlesex Co., Massachusetts, USA
117.5km (73.0 miles) Y West Point, Orange Co., New York, USA
118.7km (73.7 miles) Z Ossining (Sing Sing), Westchester Co., New York, USA
118.7km (73.8 miles) 0 White Plains, Westchester Co., New York, USA
121.4km (75.4 miles) 1 Philips Mine (Philips Pyrite Mine; Anthony's Nose Pyrrhotite Mine), Anthony's Nose, Philipstown Township, Putnam Co., New York, USA
122.3km (76.0 miles) 2 Bog Meadow Pond, Town of Highlands, Orange Co., New York, USA
123.9km (77.0 miles) 3 Bear Mountain, Bear Mountain State Park, Orange Co., New York, USA
125.0km (77.6 miles) 4 Larchmont, Mamaroneck, Westchester Co., New York, USA
130.3km (80.9 miles) 5 Stony Point (Woodbury), Rockland Co., New York, USA
139.3km (86.5 miles) 6 Clove Mine (Wilks Mine), Village of Monroe, Town of Monroe, Orange Co., New York, USA
139.5km (86.7 miles) 7 Acushnet Quarry (P. J. Keating Quarry; Tilcon Capaldi Quarry; Warren Brothers Quarry; Blue Stone Quarry; Old Bluestone Quarry), Acushnet, Bristol Co., Massachusetts, USA
141.3km (87.8 miles) 8 Fort George (192nd Street & Audubon Avenue), Washington Heights, Manhattan Island, Manhattan (New York Co.), New York City, New York, USA
141.4km (87.9 miles) 9 Woodcliff Park (Woodcliff), Bergen Co., New Jersey, USA
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