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

Classification
Species:Muscovite
Comments:Crystal aggregates and books were recovered in gneiss. Some euhedral crystals associated with magnetite and chondrodite. However, the New York State Museum reports that specimens tested turned out to be phlogopite.
Habit:cleavable masses, pseudo-hexagonal tabular
Abundance at site:Common
Confirmation
Validity:Believed Valid
References
References:(Januzzi, 1966, 1989) (Manchester, 1931) (Trainer, 1938).
Associated Minerals Based on Photo Data:
Magnetite1 photo of Muscovite associated with Magnetite at this locality.
Chondrodite1 photo of Muscovite associated with Chondrodite at this locality.
Data
Mineral Data:Click here to view Muscovite data
Locality Data:Click here to view Tilly Foster Iron Mine, Brewster, Town of Southeast, Putnam Co., New York, USA
Nearest other occurrences of Muscovite
4.6km (2.9 miles) A Interstate 84 road cuts, Brewster, Southeast Township, Putnam Co., New York, USA
11.4km (7.1 miles) B Tuckahoe and Patterson Marble Company Quarry, Patterson, Putnam Co., New York, USA
13.2km (8.2 miles) C Western Connecticut State College, Danbury, Fairfield Co., Connecticut, USA
17.4km (10.8 miles) D Titicus Mica Quarry, Ridgefield, Fairfield Co., Connecticut, USA
17.7km (11.0 miles) E Casey Quarry (Ridgefield pegmatite), Ridgefield, Fairfield Co., Connecticut, USA
19.6km (12.2 miles) F Ridgefield, Fairfield Co., Connecticut, USA
19.8km (12.3 miles) G Agstone Company Limestone Quarry, Danbury, Fairfield Co., Connecticut, USA
21.6km (13.4 miles) H U. S. Route 7 Expressway (Danbury line to Iron Works District), Brookfield, Fairfield Co., Connecticut, USA
22.2km (13.8 miles) I Shaft 7, Delaware Aqueduct, Fishkill Township, Dutchess Co., New York, USA
22.3km (13.8 miles) J Danbury beryl prospect, Brookfield, Fairfield Co., Connecticut, USA
23.6km (14.7 miles) K Bedford, Westchester Co., New York, USA
23.6km (14.7 miles) L Baylis Quarry (Bayliss Quarry), Bedford, Westchester Co., New York, USA
24.1km (15.0 miles) M Fillow Quarry (Branchville Quarry; Branchville Mica Mine; Smith Mine), Branchville, Redding (Reading), Fairfield Co., Connecticut, USA
24.2km (15.0 miles) N Sky Ridge railroad cut, Hawleyville, Newtown, Fairfield Co., Connecticut, USA
24.4km (15.2 miles) O Kinkel Quarry, Bedford, Westchester Co., New York, USA
25.3km (15.7 miles) P Redding Glen (Redding Ridge), Redding (Reading), Fairfield Co., Connecticut, USA
25.9km (16.1 miles) Q Biermann Quarries (Bethel quarries) and tourmaline ledge, Bethel, Fairfield Co., Connecticut, USA
28.0km (17.4 miles) R Schorl locality, Wilton, Fairfield Co., Connecticut, USA
29.0km (18.0 miles) S Crugers Emery Mine, Montrose, Cortlandt Township, Westchester Co., New York, USA
30.0km (18.6 miles) T Forest of Dean Mine, Fort Montgomery, Town of Highlands, Orange Co., New York, USA
30.6km (19.0 miles) U Green's Farm locality (Roxbury garnet mine; Roxbury Falls garnet mine; Garnet Hill), Roxbury, Litchfield Co., Connecticut, USA
31.1km (19.4 miles) V Rockside Quarry (Mine Hill Quarry), Mine Hill (Ore Hill), Roxbury, Litchfield Co., Connecticut, USA
32.1km (19.9 miles) W New England Mining Company Quarry (Roebling Mine; Hewitt's Mine), Upper Merryall, New Milford, Litchfield Co., Connecticut, USA
32.6km (20.3 miles) X New Canaan, Fairfield Co., Connecticut, USA
33.1km (20.5 miles) Y Kyanite locality (Judds Bridge locality), Washington, Litchfield Co., Connecticut, USA
33.3km (20.7 miles) Z Ossining (Sing Sing), Westchester Co., New York, USA
33.7km (21.0 miles) 0 Pleasantville, Mount Pleasant, Westchester Co., New York, USA
34.3km (21.3 miles) 1 New England Materials quarry, Monroe, Fairfield Co., Connecticut, USA
37.6km (23.4 miles) 2 Old Mine Plaza construction site, Long Hill, Trumbull, Fairfield Co., Connecticut, USA
37.9km (23.6 miles) 3 Corporate Drive road cut, Long Hill, Trumbull, Fairfield Co., Connecticut, USA
38.0km (23.6 miles) 4 Old Mine Park (Lane’s Mine of Trumbull; Lane's New Stratford mine; Hubbard Mine; Long Hill Mine; Old Tungsten Mine), Long Hill, Trumbull, Fairfield Co., Connecticut, USA
38.6km (24.0 miles) 5 Norwalk, Fairfield Co., Connecticut, USA
39.2km (24.4 miles) 6 East Village pegmatite, Monroe, Fairfield Co., Connecticut, USA
39.3km (24.4 miles) 7 Nonnewaug River Industrial Park, Woodbury, Litchfield Co., Connecticut, USA
39.3km (24.4 miles) 8 Porter Hill Road roadcut, Long Hill, Trumbull, Fairfield Co., Connecticut, USA
39.4km (24.5 miles) 9 Valhalla, Mount Pleasant, Westchester Co., New York, USA
Mineral and/or Locality  
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