what is the chemical formula for biotite


Biotite | mineral | Britannica Biotite, also called black mica, 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 - Wikipedia Biotite is a common group of phyllosilicate minerals within the mica group, with the approximate chemical formula K(Mg,Fe) 3 AlSi 3 O 10 (F,OH) 2. It is primarily a solid-solution series between the iron-endmember annite, and the magnesium-endmember phlogopite; more aluminous end-members include siderophyllite and eastonite. Crystal habit: Massive to platyCrystal class: Prismatic (2/m), (same H-M symbol)Mohs scale hardness: 2.5–3.0Crystal system: Monoclinicwhat is the chemical formula for biotite - Yahoo Answers Results answers.search.yahoo.comWhat is the chemical formula for the mineral mica?7 answersI'll give you an URL: http://webmineral.com/Alphabetical_Listing.shtml The chemical formula of two micas (the most commom) are: Muscovite http://webmineral.com/Alphabetical_Listing.shtml Chemical Formula: KAl2(Si3Al)O10(OH,F)2 Biotite...What are the formulas for marble, limestone, sandstone and granite?7 answersBoth Marble & Limestone are composed of the mineral calcite. Calcite has the chemical formula CaCO3 (Calcium carbonate). Marble is a metamorphosed limestone; that's to say a limestone that has been subject to exceptional heat or pressure....Rock Compositions? ( formulas ) PLEASE PLEASE HELP ME? 10POINTS?2 answersRocks are made up of many minerals(with the exception of monomineralic rocks) so most rocks are not going to have 1 chemical formula Yeah you need to find the minerals that make up the rock in order to get the formulas Limestone is...See 8 related questions

Biotite | Definition of Biotite at Dictionary.com A dark-brown or dark-green to black mica. Biotite is monoclinic and is found in igneous, metamorphic, and sedimentary rocks. Chemical formula: K(Mg,Fe) 3 (Al,Fe)Si 3 O 10 (OH) 2.

Biotite Mineral Geology and Uses - ThoughtCo Jan 16, 2020 · Various forms of mica have different chemical compositions and some unique properties. Biotite is characterized by its dark color and approximate chemical formula K(Mg,Fe) 3 AlSi 3 O 10 (F,OH) 2 . Discovery and Properties

What is the chemical formula of biotite - Answers What is the chemical formula for mica var? If you think to biotite the chemical formula is: K(Mg,Fe)3AlSi3O10(F.OH)2 Asked in Geology , Earth Sciences , Mining

Biotite | Minerals Education Coalition Biotite is black magnesium/iron-based mica of low commercial value. It appears in the form of thin sheets which generally range from 0.003 mm to 0.1 mm in thickness. Mineral.

University of Minnesota’s Mineral Pages: Biotite Dark colored minerals with a layered crystal structure, biotite and phlogopite both display a single perfect cleavage direction. This cleavage allows biotite and phlogopite samples to be easily separated into thin flexible light-transmitting translucent sheets.

Biotite Mineral | Uses and Properties A generalized chemical composition for the biotite group is: 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-ray analysis.

Biotite mica: The mineral Biotite information and pictures Chemical Formula: The classic formula for Biotite is: K(Mg,Fe 2+ 3)(Al,Fe 3+)Si 3 O 10 (OH,F) 2 The group formula including all member minerals: K(Mg,Fe 2+) 3 (Al,Fe 3+)[(Al,Si) 3 O 10](OH,F) 2 Individual members are: Phlogopite: KMg 3 AlSi 3 O 10)(F,OH) 2 Siderophyllite: KFe 2+ 2 Al(AlSi 2 O 10)(OH) 2 Eastonite: KMg 2 Al(AlSi 2 O 10)(OH) 2 Annite: KFe 2+ 3 AlSi 3 O 10 (OH) 2

Biotite Mineral Data Granitic rocks. Forms a series with phlogopite. Has several polytypes (1M, 3T, 2M1). Biotite is now a group name for phlogopite, siderophyllite and eastonite.

Biotite Mineral Geology and Uses - ThoughtCo Jan 16, 2020 · Biotite is a dark-colored 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, greenish-brown, yellow, and even white. Biotite occurs with other types of mica, even within a single rock.

Biotite Mica Mineral | Physical and Optical Properties ... Biotite is the most common mica mineral and also known as black mica, a silicate mineral in the common mica group. Approximate chemical formula K (Mg, Fe). Approximate chemical formula K (Mg, Fe). It can be found in massive crystal layers weighing several hundred pounds.

Biotite: Mineral information, data and localities. The name "biotite" is also used as a generic field term for any incompletely analysed dark mica. May alter to vermiculite. Rock-forming biotite may be confused with stilpnomelane. Classification of Biotite Hide. This section is currently hidden. Click the show button to view. Redefined by the IMA. Pronounciation of Biotite Hide.

Biotite - NOVA Mineralogy Physical Properties Chemical formula K(Mg,Fe)3(AlSi3O10)(OH)2 Class Phyllosilicate Sheets of linked tetrahedra Crystal system Monoclinic, pseudohexagonal Habit Pseudohexagonal Foliated masses Irregular grains or flakes Books of foliated, pseudohexagonal crystals Color Black Brown-black Greenish black Hardness 2.5 to 3 Specific gravity 2.9 to 3.1 Cleavage Perfect basal {001} Fracture Ragged ...

Biotite - Ragnarök Wiki 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.

The Meanings of Biotite - Gemstone Meanings List The meaning of Biotite also includes ability development. It has been believed that Biotite helps you to live a creative life. The light energy within Biotite aids you to develop your potentials. Biotite is also said to make up for your shortcomings. The gemstone strengthens your strengths and compensates for your weaknesses.

What is a biotite - Answers A biotite is a variety of dark brown mica, a mixed aluinosilicate and fluoride of potassium, magnesium and iron.

Difference Between Muscovite and Biotite | Compare the ... Aug 12, 2019 · So, the key difference between muscovite and biotite is that the muscovite contains mainly potassium and aluminium, while the biotite mainly has potassium and magnesium. Moreover, muscovite is white or colourless, but it can have tint such as grey, brown, green, etc. while biotite appears in dark brown or greenish-brown colour.

Gneiss - Wikipedia Augen gneiss, from the German: Augen, meaning "eyes", is a coarse-grained gneiss resulting from metamorphism of granite, which contains characteristic elliptic or lenticular shear-bound feldspar porphyroclasts, normally microcline, within the layering of the quartz, biotite and magnetite bands.

Muscovite vs Biotite - What's the difference? | WikiDiff As nouns the difference between muscovite and biotite is that muscovite is (mineralogy) a pale brown mineral of the mica group, being a basic potassium aluminosilicate with the chemical formula k]]al 2 (si 3 al)o 10 (oh,[[fluorine|f) 2 ; used as an electrical insulator etc while biotite is (mineral) a dark brown mica; it is a mixed ...

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