Difference between revisions of "Illite"
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[[File:pi40836illite2.jpg|thumb|Illite]] | [[File:pi40836illite2.jpg|thumb|Illite]] | ||
== Description == | == Description == | ||
| − | + | [[File:IlliteSEMkes.jpg|thumb|Illite]] | |
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. | 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. | ||
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hydromica; hydromuscovite; gumbelite; illita (Esp.); illite (Fr., Port.); Illit (Deut.); illiet (Ned.) | hydromica; hydromuscovite; gumbelite; illita (Esp.); illite (Fr., Port.); Illit (Deut.); illiet (Ned.) | ||
| − | [[ | + | ==Physical and Chemical Properties== |
| − | + | [[[SliderGallery rightalign|Illite PMA.TIF~FTIR (PMA)]]] | |
| − | + | * Color = gray, green white | |
| − | Color = gray, green white Cleavage=perfect Streak = white | + | * Cleavage=perfect |
| − | + | * Streak = white | |
| − | + | * Mohs Hardness = 1.0-2.0 | |
| − | + | * Density = 2.6-2.9 g/ml | |
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| − | == | + | ==Resources and Citations== |
* Robert Fournier, ''Illustrated Dictionary of Practical Pottery'', Chilton Book Company, Radnor, PA, 1992 | * Robert Fournier, ''Illustrated Dictionary of Practical Pottery'', Chilton Book Company, Radnor, PA, 1992 | ||
| − | * | + | * Web Minerals: [http://webmineral.com/data/Illite.shtmltml Illite] (Accessed Sept. 7, 2005) |
| − | * Wikipedia | + | * Wikipedia: http://en.wikipedia.org/wiki/Illite (Accessed Sept. 7, 2005) |
[[Category:Materials database]] | [[Category:Materials database]] | ||
Latest revision as of 19:29, 14 September 2022
Description
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.)
Physical and Chemical Properties
- Color = gray, green white
- Cleavage=perfect
- Streak = white
- Mohs Hardness = 1.0-2.0
- Density = 2.6-2.9 g/ml
Resources and Citations
- Robert Fournier, Illustrated Dictionary of Practical Pottery, Chilton Book Company, Radnor, PA, 1992
- Web Minerals: Illite (Accessed Sept. 7, 2005)
- Wikipedia: http://en.wikipedia.org/wiki/Illite (Accessed Sept. 7, 2005)