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

Classification
Species:Palygorskite
Formula:(Mg,Al)5(Si,Al)8O20(OH)2 · 8H2O
Comments:Included in a list of minerals without details. Most likely this fibrous mineral is actually sepiolite. TEM-EDS analysis of a similar sample from the marble in Danbury proved to be sepiolite.
Habit:fibrous
Colour:white
Confirmation
Validity:Unconfirmed/Questioned
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 Palygorskite 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 Palygorskite
3.0km (1.8 miles) Agstone Company Limestone Quarry, Danbury, Fairfield County, Connecticut, USA
21.0km (13.1 miles) Tilly Foster Iron Mine, Brewster, Town of Southeast, Putnam Co., New York, USA
92.1km (57.2 miles) Union Building and Construction Quarry (UBC Quarry; Tilcon Quarry), Woodland Park (West Paterson), Passaic Co., New Jersey, USA
 
Mineral and/or Locality  
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