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Sericite from
U. S. Route 7 Expressway (Danbury line to Iron Works District), Brookfield, Fairfield County, Connecticut, USA

Classification
Species:Muscovite var: Sericite
Formula:KAl2(AlSi3O10)(OH)2
Comments:Included in a list of minerals without details, but plausible for the geology.
Confirmation
Validity:Believed Valid
References
References:Januzzi, Ronald E. (1994), Mineral Data Book - Western Connecticut and Environs. The Mineralogical Press, Danbury, Connecticut.
Data
Mineral Data:Click here to view Sericite data
Locality Data:Click here to view U. S. Route 7 Expressway (Danbury line to Iron Works District), Brookfield, Fairfield County, Connecticut, USA
Nearest other occurrences of Sericite
19.0km (11.8 miles) Tuckahoe and Patterson Marble Company Quarry, Patterson, Putnam Co., New York, USA
20.8km (12.9 miles) Ridgefield, Fairfield County, Connecticut, USA
34.9km (21.7 miles) New Canaan, Fairfield County, Connecticut, USA
38.6km (24.0 miles) Thomaston Dam railroad cut, Thomaston Dam, Thomaston, Litchfield Co., Connecticut, USA
51.3km (31.9 miles) Forest of Dean Mine, Fort Montgomery, Town of Highlands, Orange Co., New York, USA
71.8km (44.6 miles) Great Hill cobalt mines, Cobalt, East Hampton (Chatham), Middlesex Co., Connecticut, USA
 
Mineral and/or Locality  
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