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Illite is a very common mica and clay mineral, typically found as extremely fine-grained masses of grayish-white to silvery-gray, sometimes greenish-gray, material. The literature on "illite" is very large as it is a widespread component of many sediments, especially marine; despite this it is poorly defined and variably considered a mineral ...
illite, any of a group of mica-type clay minerals widely distributed in marine shales and related sediments. Illite contains more water and less potassium than true micas, but it has a micalike sheet structure and is poorly crystallized.
Used in the mineralogical sense, "illite" identifies a clay structure, which is of 2:1 type, dioctahedral, non-expanding, aluminous, and contains nonexchangeable K as the major interlayer cation.
Illite, also called hydromica or hydromuscovite, [ 6 ] is a group of closely related non-expanding clay minerals. Illite is a secondary mineral precipitate, and an example of a phyllosilicate, or layered alumino-silicate. Its structure is a 2:1 sandwich of silica tetrahedron (T) – alumina octahedron (O) – silica tetrahedron (T) layers. [ 5 ] .
Illite is a secondary mineral precipitate and an example of a phyllosilicate, or layered alumino-silicate. Its structure consists of a 2:1 clay layer, meaning it has two tetrahedral sheets of silica sandwiching a central octahedral sheet of alumina.
Illite is defined as a dioctahedral 2:1 phyllosilicate commonly found in soils and sedimentary rocks. It is a type of clay mineral with a non-expandable layer and various chemical compositions, often used as a series name due to its structural characteristics. AI generated definition based on: Developments in Clay Science, 2013
Illite is a type of clay mineral that belongs to the group of non-expanding or non-swelling phyllosilicate minerals. It is a common constituent of sedimentary rocks, such as shale, and can also be found in soils and weathered rocks.
Illite is a very common mica and clay mineral, typically found as extremely fine-grained masses of grayish-white to silvery-gray, sometimes greenish-gray, material.
Illites, which are the dominant clay minerals in argillaceous rocks, form by the weathering of silicates (primarily feldspar), through the alteration of other clay minerals, and during the degradation of muscovite (Deer and others, 1975).
Here we use first-principles density-functional theory to explore the energetics and structures of these two models for an illite–smectite interstratified clay mineral with a ratio of 1:1 and a...