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Biotite

Biotite is a common phyllosilicate mineral within the mica group with the approximate chemical formula K(Mg Fe) 3 AlSi 3 O 10 (F OH) 2 More generally it refers to the dark mica series primarily a solid-solution series between the iron-endmember annite and the magnesium-endmember phlogopite more aluminous endmembers include siderophyllite Get price

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Biotite Gneiss

Typically however biotite's dark color prohibits such a mistake Gneiss is a medium- to coarse-grained rock that can be found in a variety of locations but its characteristic banding can perhaps best be seen in massive exposed samples such as those at Stone Mountain Georgia and Hickory Nut Gorge in Get price

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The decomposition of biotite in the soil

The decomposition of biotite in the soil By G F WALKER B Sc Ph D Macaulay Institute for Soil Research Aberdeen [Read April 9 1949 Clay Mineral Group meeting at Leeds ] A NOTICEABLE feature of many of the soils of north-east Scotland is the presence in Get price

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Biotite

Biotite in biotite gneiss plane polars Biotite in biotite gneiss crossed polars Biotite in lamprophyre associated with the Acadian Orogeny plane polars Biotite in lamprophyre associated with Acadian Orogeny crossed polars Biotite PPL Biotite XPL The biotite grain in these videos features zircon with a radioactive decay halo Get price

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biotite mobile crusher

Biotite quarry crusher - palashresidencyin Exploring the Wilmington Blue Rocks A GeoAdventure in the When found in stream beds yards or old quarries the rocks are black or dark gray It is useless as road ballast as it breaks rock crushers so today the large by stringers of garnet biotite and sillimanite in a mass of quartz and feldsparGet price

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Biotite Mineral Data

PE Biotite = 4 04 barns/electron U=PE Biotite x r electron = 12 42 barns/cc Radioactivity GRapi = 129 08 (Gamma Ray American Petroleum Institute Units) Concentration of Biotite per GRapi unit = 0 77 (%) Estimated Radioactivity from Biotite - barely detectable Biotite Classification Dana Class 71 02 02b 02 Phyllosilicate Sheets of Six Get price

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Why is magnetite mined as an iron ore but biotite is not

16-11-2010If you look more closely at the chemical make up of both minerals it is clear that magnetite contains a far greater proportion of iron than biotite In addition to this magnetite is far more common than biotite easier to mine and the extraction of iron from the ore is Get price

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Biotite

Biotite is a common phyllosilicate mineral within the mica group with the approximate chemical formula K(Mg Fe) 3 AlSi 3 O 10 (F OH) 2 It was named by J F L Hausmann in 1847 in honor of the French physicist Jean-Baptiste Biot who in 1816 researched the optical properties of mica discovering many unique properties Get price

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INTRODUCTION

Biotite has the chemical formula KX 3 AlY 3 O 10 (OH) 12 The X and Y sites can be occupied by a variety of cations producing a variety of end members (Figure 1) The two end-members relevant to this study are annite (KFe 3 AlSi 3 O 10 (OH) 12) and phlogopite (KMg 3 AlSi 3 O 10 (OH) 12) Compositional variations and properties of biotite !Get price

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BIOTITE (Potassium Iron Magnesium Aluminum Silicate

Biotite like other micas has a layered structure of iron magnesium aluminum silicate sheets weakly bonded together by layers of potassium ions These potassium ion layers produce the perfect cleavage Biotite is rarely considered a valuable mineral specimen Get price

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Structural Quality Promotion of Vanadium

Structural Quality Promotion of Vanadium-Containing Biotite via Gamma Irradiations Khaled M Elsabawy1 2 * and Ahmed T Tawfik1 3 1Materials Science Unit Chemistry Department Faculty of Science Tanta University - which have chemical formula of V-biotite II 2 Get price

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What is the difference between biotite and muscovite

Both muscovite and biotite belong to the phyllosilicates = sheet silicates They form flat structures arranged in the layers Muscovite is dioctahedral pale mica It is an IMA valid mineral with precisely defined composition it is generally a hydGet price

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Biotite

Biotite is a common phyllosilicate mineral within the mica group with the approximate chemical formula K(Mg Fe) 3 AlSi 3 O 10 (F OH) 2 More generally it refers to the dark mica series primarily a solid-solution series between the iron-endmember annite and the magnesium-endmember phlogopite more aluminous end-members include siderophyllite Get price

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how is biotite processed for use

Biotite is a common phyllosilicate mineral within the mica group with the approximate chemical formula K(Mg Fe) 3 AlSi 3 O 10 (F OH) 2 More generally it refers to the dark mica series primarily a solid-solution series between the iron-endmember annite and the magnesium-endmember phlogopite more aluminous end-members include siderophyllite Get price

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what is the chemical formula for biotite

What is the formula for Biotite Mica science answers Biotite is common therefore you may not find it in many collection but biotite is very useful Biotite is used extensively as aninsulator in many electrical or semiconductors appliions Get Price chemical formula of magnetite and biotite chemical formula of magnetite and biotite Get price

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Geochemical and Geochronological Discrimination of

28-8-2019Chemical maps of the halo biotite (Figure 5B) reveal chemical zonation in the form of 2–5 μm Fe–Mg rich and K-poor rims The halo biotite in sample MV-02 also reveals the intergrowth of the biotite with a Ca–Al rich and Fe–Mg–K poor mineral phase Get price

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Biotite Properties and Occurrences

Biotite is a common phyllosilicate mineral within the mica group with the approximate chemical formula K(Mg Fe) 3 AlSi 3 O 10 (F OH) 2 The name "biotite" is used in the field and in entry-level geology courses because these minerals generally cannot be distinguished without optical chemical or x Get price

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Chemical formulae and activity models for biotite

Chemical formulae The analyses used are all recent electron micro-probe analyses from pelitic rocks of New England made by several investigators using different micro-probes standards and data reduction schemes Biotite For biotite composition chemical analyses Get price

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Structural Fe(II) Oxidation in Biotite by an

sequence of biotite is dominated in the first stages by the release of interfoliar K 16 17 This triggers its transformation toward vermiculite while the structural Fe(II) mainly in the octahedral sheets is oxidized into Fe(III) 18 Soil biota have the potential to enhance biotite weathering Roots bacteria and fungi can indeed modify the Get price

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Biotite surface chemistry as a function of aqueous fluid

The bulk chemical composition of the biotite was characterised by electron microprobe analysis (EMPA Jeol JXA-8230 running with a tungsten source at 15 kV and 15 nA) using the average of 15 point measurements (∑oxide weight 99%) and O 10 (OH) 2 formula units Get price

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University of Minnesota's Mineral Pages Biotite

Biotite the more abundant of the two minerals is the iron-rich end member of the series while phlogopite is the magnesium-rich end member ^ Top Geologic Setting and Associated Minerals An important rock-forming mineral in felsic and intermediate igneous rocks biotite Get price

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biotite mineral uses

Biotite is a very common form of mica It is named in honor Jean Baptiste Biot (1774 - 1862) a French physicist mathematician and astronomer who researched the mica minerals for their optical properties Because of Biotite's abundance its presence is usually lacking in collections except for it being an accessory mineral to other minerals Get price

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biotite for sale

Biotite gold claims mining properties gold mines for sale and more! template joomla Mining properties for sale gold claims for sale Biotite is a common phyllosilicate mineral within the mica group with the approximate chemical formula K(Mg Fe) 3AlSi 3O 10(OH) 2 More generally it referGet price

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Biotite

The key items that make something a mineral are occurring naturally and the definite crystal structure that is expressible as a chemical formula Rocks that do not meet this criteria are referred to as amorphis - not having a definite structure or expressible as a chemical formula Get price

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Phyllosilicates

Biotite with more Fe-rich compositions is common in dacitic rhyolitic and trachytic volcanic rocks granitic plutonic rocks and a wide variety of metamorphic rocks In metamorphic rocks biotite usually shows a preferred orientation with its {001} forms parallel to the schistose foliation Get price

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Biotite

Biotite is a common phyllosilicate mineral within the mica group with the approximate chemical formula K(Mg Fe) 3 AlSi 3 O 10 (F OH) 2 More generally it refers to the dark mica series primarily a solid-solution series between the iron-endmember annite and the magnesium-endmember phlogopite more aluminous endmembers include siderophyllite Get price

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Biotite

Biotite is a member of the mica group of silicates (sheet silicates) like chlorite and muscovite It occurs in more geological environments than any of the other micas It is a common rock forming mineral being present in at least some percentage in many igneous rocks (e g granite and rhyolite ) and metamorphic rocks (e g schist gneiss ) Get price

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Biotite

Biotite is a common phyllosilicate mineral within the mica group with the approximate chemical formula K(Mg Fe) 3 AlSi 3 O 10 (F OH) 2 More generally it refers to the dark mica series primarily a solid-solution series between the iron-endmember annite and the magnesium-endmember phlogopite more aluminous endmembers include siderophyllite Get price

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Biotite Granite

Biotite granite is a coarse grained felsic intrusive rock the minerals which make up a granite are typically quartz feldspars and micas In the case of biotite granite the constituent minerals are milky (white) quartz plagioclase feldspar which is often white and biotite mica crystals Get price

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Biotite vs Phlogopite

As nouns the difference between biotite and phlogopite is that biotite is (mineral) a dark brown mica it is a mixed aluminosilicate and fluoride of potassium magnesium and iron while phlogopite is (mineralogy) a mica mineral with the chemical formula k]]mg 3 alsi 3 o 10 (f o[[hydrogen|h) 2 a basic potassium magnesium aluminosilicate used as Get price

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