biotit - Biotite and phlogopite are among the ldplay best naturallyoccurring insulating materials Both are widely used throughout industry but small differences in their composition lead to phologites widespread use in electrical systems while biotite is only used to insulate heating systems Biotite Geology is the Way Properties Formation Ocurrence and Uses Geology Science In plain light biotite in a granite appears a slightly drab brown Radiation damage from zircon can leave pleochroic spots that fade to extinction at a different rate that the surrounding undamaged material Biotite Mineral Data Biotite Clark Science Center Biotite is a common group of phyllosilicate minerals within the mica group with the approximate chemical formula KMgFe 3 AlSi 3 O 10 FOH 2It is primarily a solidsolution series between the ironendmember annite and the magnesiumendmember phlogopite more aluminous endmembers include siderophyllite and eastoniteBiotite was regarded as a mineral species by the International Biotite Mica Silicate RockForming Britannica Biotite Wikipedia Biotite Common Minerals Biotite is a name for several darkcolored sheet silicate minerals that form in igneous and metamorphic rocks Learn about its properties uses and how to distinguish it from fools gold Biotite Mineral Uses and Properties Geologycom Biotite is a silicate mineral in the common mica group abundant in metamorphic pegmatite and igneous rocks It is composed of variable proportions of epicwins four aluminosilicates of potassium iron magnesium or aluminum Biotite mica The mineral Biotite information and pictures General Biotite Information Chemical Formula KMgFe3AlSi3O10OHF2 Composition Molecular Weight 43353 gm Potassium 902 K 1086 K 2 O Magnesium 1402 Mg 2324 MgO Aluminum 622 Al 1176 Al 2 O 3 Iron 644 Fe 829 FeO Silicon 1944 Si 4158 SiO 2 Hydrogen 041 H 364 H 2 O Oxygen 4336 O Biotite is a darkcoloured Ferich mica that belongs to the trioctahedral mica group It has various chemical and optical properties and is named after the French scientist JeanBaptiste Biot Biotite and muscovite are two closely related minerals that belong to the mica group of sheet silicate minerals While they share some similarities they also have distinct differences in terms of their chemical composition physical properties and geological occurrences Biotite Mineral information data and localities mindatorg Biotite is a black dark brown or dark green mineral with a flaky habit and a pearly luster It is a rockforming mineral in metamorphic and igneous rocks and has various uses as an insulator and a collectors specimen Biotite is a black mica that occurs in igneous and metamorphic rocks Learn about its structure chemistry habit cleavage luster color and how to distinguish it from edn other micas and minerals
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