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Biotite is group of common rockforming minerals found in igneous and metamorphic rocks. It is a name used for a large group of black mica minerals which include annite, phlogopite, siderophyllite, fluorophlogopite, fluorannite, eastonite, and many others. The micas vary in chemical composition but have very similar physical properties and are all sheet silicate minerals.
Biotite, a silicate mineral in the common mica group. It is abundant in metamorphic rocks (both regional and contact), in pegmatites, and also in granites and other intrusive igneous rocks. For chemical formula and detailed physical properties, see mica (table). Biotite is regarded as a mixture
biotite mineralbiotite mineral; biotite mineral; Biotite is the most common mica mineral and also known as black mica, a silicate mineral in the common mica chemical formula K (Mg, Fe). It can be found in massive crystal layers weighing several hundred pounds.
The best part is Mica can resist nearly all mediums like chemicals, acids, gasses, alkalis, and oils. Uses of mica? Mica is a naturally occurring stone that directly applies to a set of minerals containing silica in its highest form. This mineral is mostly used in gypsum wallboard combined compound where it acts as wadding and prevents cracking.
Uses of Biotite. Biotite has a small number of commercial uses. Ground mica is used as a filler and extender in paints, as an additive to drilling muds, as an inert filler and moldrelease agent in rubber products, and as a nonstick surface coating on asphalt shingles and rolled roofing.
A series or subgroup of the Mica Group. The CNMMN Subcommittee on Nomenclature of the Micas (1998, 1999) has recommended that the name biotite be used ...
Muscovite is the most common form of mica. Its name is derived from "Muscovy Glass", which describes thick sheets of transparent mica that were once used as a glass substitute in Russia. Because of Muscovite''s abundance, its presence is usually lacking in collections except for it being an accessory mineral to other minerals. However, there are ...
Uses of Muscovite. Used chiefly as an insulating material in the manufacture of electrical apparatus. Many of the small parts used for electrical insulation are built up of thin sheets of mica cemented together. They may thus be pressed into shape before the cement hardens.
Uses. The high iron content, which imparts dark colors, rules out biotite from many industrial uses. However, because biotite is abundant in granitic rocks, pegmatites, and schists that are also associated with the more desirable muscovites, the mineral is important for exploration. Biotite is mica of little commercial value.
Biotite and muscovite are the two most common mica minerals that often occur together in Alrich igneous rock. Peraluminous twomica granitoid. A fragment from an erratic on Alnö Island, Sweden. Width of sample 9 cm. Monomineralic rock that is composed of (almost) pure biotite is .
Mica, any of a group of hydrous potassium, aluminum silicate minerals. It is a type of phyllosilicate, exhibiting a twodimensional sheet or layer structure. Among the principal rockforming minerals, micas are found in all three major rock varieties—igneous, sedimentary, and metamorphic.
Biotite and phlogopite are easily recognized as mica minerals, because of their perfect single cleavage and the ease with which they are separated into thin flexible sheets. Color is the only easy way to distinguish them from one another and other micas like muscovite. Muscovite:
Muscovite is ground and used to give wallpaper a shiny luster today., and it is used in eye makeup and glitter. Where Is It Found. Muscovite is the most common mica, found in granites, pegmatites, gneisses, and schists, and as a contact metamorphic rock or as a secondary mineral resulting from the alteration of topaz, feldspar, kyanite, etc.
Biotite is a common phyllosilicate mineral within the Mica group. More generally, it refers to the dark Mica series, including Annite, Eastonite, Phlogopite and Siderophyllite. Biotite, like other Micas, has a layered structure of iron magnesium aluminium silicate sheets weakly bonded together by layers of .
Biotite is so common that it''s considered a rockforming mineral. It is named in honor of Jean Baptiste Biot, a French physicist who first described the optical effects in the mica minerals. Biotite actually is a range of black micas; depending on their iron content they range from eastonite through siderophyllite to .
Jan 16, 2020· Biotite is a darkcolored mica. It is an aluminosilicate mineral that forms sheets or flakes. Although biotite is sometimes called black mica, it occurs in other colors, including brown, greenishbrown, yellow, and even white. Biotite occurs with other types of mica, even within a single rock.
Biotite is a member of the mica branch of the silicate mineral group. It is common as a rockforming mineral and is found associated with muscovite, feldspar, and quartz. It has a widespread occurance and is present in all three rock types igneous, metamorphic, and sedimentary. It is classified as a .
Mindat Biotite: discredited as valid mineral name 1999; Series names used in mica nomenclature; micas between, or close to, the annitephlogopite and siderophylliteeastonite joins.
Mica is a naturally occurring stone that directly applies to a set of minerals containing silica in its highest form. This mineral is mostly used in gypsum wallboard combined compound where it acts as wadding and prevents cracking. There are a var...
Biotite is so common that it''s considered a rockforming mineral. It is named in honor of Jean Baptiste Biot, a French physicist who first described the optical effects in the mica minerals. Biotite actually is a range of black micas; depending on their iron content they range from eastonite through siderophyllite to .
Biotite: Biotite is another common mica mineral with a single perfect cleavage similar to that of muscovite. The two often occur together in the igneous and metamorphic rocks, but they can be distinguished by their color. Muscovite is very light colored to colorless, while biotite is much darker (typically brown to black). ...
Biotite is a common group of phyllosilicate minerals within the mica group, with the approximate chemical formula K(Mg,Fe) 3AlSi 3O 10(F,OH) 2. It is primarily a solidsolution series between the ironendmember annite, and the magnesiumendmember phlogopite; .
Biotite is a poor conductor of heat due to its ability to resist heat traveling through it; therefore it is used as an insulator for different electrical products and semiconductors (4). Industrial Uses: Ground mica has many different uses. It''s most well known as a smoothing agent in .
Mica is a mineral name given to a group of minerals that are physically and chemically similar. They are all silicate minerals, known as sheet silicates because they form in distinct layers. Micas are fairly light and relatively soft, and the sheets and flakes of mica are flexible. Mica is heatresistant and does not conduct electricity.
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