A Geoscience Digital Image Library
A Geoscience Digital Image Library
| Title | Illite |
|---|---|
| Description | Illite is a silicate that is formed by the weathering or hydrothermal alteration of muscovite-phengite and also authigenic alteration of K-spar or recrystallization of smectites in marine sediments. Illite's chemical formula is (K,H3O)(Al,Mg,Fe)2(Si,Al)4O10[(OH)2,(H2O)]. It is named for the state of Illinois where the mineral was first described. |
| Location | USA ▹ Illinois. Near Morris. |
| Photographer | Shannon Heinle. 2002-02-10. |
| Collection | University of North Dakota Mineralogy Collection #1490. |
| Key words | illite, silicate |
| Tech details | 419 KB. Hand specimen. Fujifilm FinePix S1Pro digital camera; 60mm AF Nikon micro lens. |
| GeoDIL number | 2345 |
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