Microcline from selected localities.


USA
Connecticut Fairfield County Newtown ⓘ Captain Cook's Quarry (Purdy Station Quarry)	Cruson, Daniel. (1991), Feldspar Quarries and The Mining History of Newtown. Triassic Valley Bulletin: August/September.
ⓘ Grace Feldspar Mine	Cruson, Daniel. (1991), Feldspar Quarries and The Mining History of Newtown. Triassic Valley Bulletin: August/September.
Litchfield County Woodbury ⓘ Flanders Road (Brushy Hill)	Harold Moritz collection
ⓘ Nonnewaug River Industrial Park	Identified at a CT Museum
ⓘ Woodbury pegmatite quarry (Judson Quarry)	Januzzi, Ronald E. (1976), The Mineral Localities of Connecticut and Southeastern New York State. Mineralogical Press, Danbury, Connecticut: 119.; Harold Moritz collection
New Haven County Southbury ⓘ Beryllium prospect	Van King
Southford ⓘ Curtis Quarry (Southford Quarry; Southford pegmatite; Southbury rose quartz quarry; Bridgeport Woodfinishing Co. Quarry; Hulls Hill)	USGS Prof Paper 255

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