Difference between revisions of "Illite"

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[[[SliderGallery rightalign|Illite PMA.TIF~FTIR (PMA)]]]
== Additional Information ==
== Additional Information ==

Latest revision as of 09:11, 4 December 2019



A class of Clay minerals composed of hydrated potassium aluminosilicates. Illites were first described in 1937 in shale samples from Calhoun county, Illinois. This grayish-green clay does not shrink on drying.

Synonyms and Related Terms

hydromica; hydromuscovite; gumbelite; illita (Esp.); illite (Fr., Port.); Illit (Deut.); illiet (Ned.)


Other Properties

Color = gray, green white Cleavage=perfect Streak = white

Mohs Hardness 1.0-2.0
Density 2.6-2.9


Illite PMA.TIF

Additional Information

Web Minerals: Illite

Additional Images

Sources Checked for Data in Record

  • Robert Fournier, Illustrated Dictionary of Practical Pottery, Chilton Book Company, Radnor, PA, 1992

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