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About mica
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Britannica about mica.
Asian deposits, chemical etching, compressibility...
Any of a group of hydrous potassium, aluminum silicate minerals. It is a type of phyllosilicate, exhibiting a two-dimensional sheet or layer structure. Among the principal rock-forming minerals, micas are found in all three major rock varieties—igneous, sedimentary, and metamorphic.
Asian deposits
Reserves of asbestos are localized; it is abundant in China, in South Korea, and on the eastern slope of the Central Urals in Siberia. Mica is abundant in eastern Siberia and is also found in large quantities in India. Asia has vast reserves of rock salt, but the hills and “glaciers” of salt in southern Iran have not been exploitable. Deposits of sulfur and gypsum are abundant in...
chemical etching
...particle, it is highest for the heaviest charged particles. In any given material, a certain minimum value for dE/dx is required before pits will develop. For example, in the mineral mica, pits are observed only from energetic heavy ions whose mass is 10 or 20 atomic mass units or greater. Many common plastic materials are more sensitive and will develop etch pits for low-mass...
compressibility
...compression on bond strength thus commonly leads to anisotropies—that is, significant differences in compression in different crystal directions. In many layered-structure silicates, such as mica, in which relatively strong and rigid layers containing magnesium-oxygen, aluminum-oxygen, and silicon-oxygen bonds alternate with weaker layers containing alkali cations, compressibility is...
occurrence in loess
Loess contains 60 to 70 percent quartz with extremes of 40 and 80 percent. Feldspars and micas make up 10 to 20 percent and carbonates 5 to 35 percent. About 2 to 5 percent of the silt is composed of such heavy minerals as amphiboles, apatite, biotite, chlorite, disthene (cyanite), epidote, garnet, glauconite, pyroxenes, rutile, sillimanite, staurolite, tourmaline, and zircon. Grains are...
significance in absolute dating
...resist daughter loss and record the primary age even though they remained hot (say, 700° C) for a long time. The mineral zircon datable by the uranium–lead method is one such mineral. The mica mineral biotite dated by either the potassium–argon or the rubidium–strontium method occupies the opposite end of the spectrum and does not retain daughter products until cooled...
structure and characteristics
Mica minerals have a basic structural unit of the 2:1 layer type like pyrophyllite and talc, but some of the silicon atoms (ideally one-fourth) are always replaced by those of aluminum. This results in a charge deficiency that is balanced by potassium ions between the unit layers. The sheet thickness (basal spacing or dimension along the direction normal to the basal plane) is fixed at about 10...
work of Mauguin
French mineralogist and crystallographer who first studied the structure of the mica group of minerals by X-ray-diffraction analysis. His work was one of the earliest contributions to the systematic study of the silicate minerals.
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Phlogopite
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Crystallography
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MICA
the Maryland Institute College of Art
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Mica Lighting .
http://www.micalamps.com/
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Phyllosilicate mineral of aluminium and potassium
http://en.wikipedia.org/wiki/Muscovite
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Silver mica
http://www.patentstorm.us/patents/4025829.html
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MICA-Mineral Information Institute
http://www.google.com/
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Biotite
http://www.britannica.com/EBchecked/topic/66240/biotite
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Muscovite.
http://www.mineralszone.com/minerals
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Mica-aluminum silicate minerals.
http://www.answers.com/topic/mica
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Mica Shields
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Mica Histori & General Information.
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Muscovite.
http://itc.gsw.edu/faculty/bcarter/physgeol/min/musc.htm
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Britannica about mica.
Asian deposits, chemical etching, compressibility...
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Micanite.
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Mineral Muscovite.
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The Mica Group of minerals
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Mica - Explanation and use.
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Mica grouping (chemical composition)
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Molding micaceous laminate
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Mica insulation
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New electric insulating materials
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SOGM - SMOG
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Mica and ecology
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English version (page about mica)
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Chemical composition of mica
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Molding micanite, Federal Standard 6122-75
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Key trends in mica consumption. Application areas
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Mica types, grades and application areas
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If microwave oven's strip burned out
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Universal insulating materials
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Mica-bearing materials list
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