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Kaolinite

Kaolinite (/ˈkeɪ.ələˌnaɪt, -lɪ-/ KAY-ə-lə-nyte, -⁠lih-; also called kaolin) is a clay mineral, with the chemical composition Al2Si2O5(OH)4. It is a layered silicate mineral, with one "tetrahedral" sheet of silicate tetrahedra (SiO4) linked to one "octahedral" sheet of aluminate octahedrons (AlO2(OH)4) through oxygen atoms on one side, and another such…

Applications, Occurrence & Synthesis and genesis

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2V angle
Measured: 24° to 50°, Calculated: 44°
Category
Phyllosilicate minerals
Cleavage
Perfect on {001}
Color
White to cream, sometimes red, blue or brown tints from impurities and pale-yellow; also often stained various hues, tans and browns being common.
Crystal class
Pedial (1) (same H-M symbol)
Crystal habit
Rarely as crystals, thin plates or stacked. More commonly as microscopic pseudohexagonal plates and clusters of plates, aggregated into compact, claylike masses.

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Kaolinite

Nodes175
Edges174
Triples142
Avg. degree1.99
Density0.011429
Components1

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Kaolinite

Top relations

related to Laboratory syntheses · 28
Kaolinite → Al, AlCl3, Alterung, As, Bogatyrev, Brindley, DeKimpe, From, H2O, Harder, Hawkins, Huertas, In, Laboratory, Noll, Norton, Only, Osborn, Pieters, Relatively
related to Occurrence · 24
Kaolinite → Australia, Brazil, Bulgaria, China, Czech Republic, Early Cenozoic, France, Germany, India, Iran, Malaysia, Mantles, Mesozoic, Northern Europe, South Africa, South Korea, Spain, Tanzania, Thailand, The
related to Names · 18
Kaolinite → Ancient Greek, Chinese, D'Entrecolles, Ehu, Entrecolles's, François Xavier, French, Fuliang County, Gaoling, High Ridge, In, Jiangxi Province's Jingdezhen Prefecture, Jingdezhen, Jingdezhen's, Latin, Qing, The, The English
see also · 14
Kaolinite → Charentes Basin, China, China Clay Branches, Deposits, England, France, FranceKaolin, Kaolin-based, Open-pit, Phyllosilicate, Railway, Sedimentary, Type, Use
related to Synthesis and genesis · 12
Kaolinite → As, At, Because, Caillère, Difficulties, Fripiat, Herbillon, Hénin, La Iglesia, The, This, Van Oosterwijk-Gastuche
related to Medical · 11
Kaolinite → An, As, In April, Institute, Kaolin-based, QuikClot, See Kaolin, South America, To, US, US Naval Medical Research
related to Structure · 6
Kaolinite → Compared, Each TO, It, The, TO, View
related to Notation · 4
Kaolinite → Al2O3, Al2Si2O5, OH, The
2V angle · 1
Kaolinite → Measured: 24° to 50°, Calculated: 44°
Category · 1
Kaolinite → Phyllosilicate minerals

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Important terminology

kaolin clay minerals also white form metakaolin al mineral silica water formation used et crystal oxygen aluminium production oh called

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
Kaolinite2V angleMeasured: 24° to 50°, Calculated: 44°1.00infobox
KaoliniteCategoryPhyllosilicate minerals1.00infobox
KaoliniteCleavagePerfect on {001}1.00infobox
KaoliniteColorWhite to cream, sometimes red, blue or brown tints from impurities and pale-yellow; also often stained various hues, tans and browns being common.1.00infobox
KaoliniteCrystal classPedial (1) (same H-M symbol)1.00infobox
KaoliniteCrystal habitRarely as crystals, thin plates or stacked. More commonly as microscopic pseudohexagonal plates and clusters of plates, aggregated into compact, claylike masses.1.00infobox
KaoliniteCrystal systemTriclinic1.00infobox
KaoliniteFormula.mw-parser-output .template-chem2-su{display:inline-block;font-size:80%;line-height:1;vertical-align:-0.35em}.mw-parser-output .template-chem2-su>span{display:block;text-align:l…1.00infobox
KaoliniteGroupKaolinite-Serpentine group, kaolinite subgroup1.00infobox
KaoliniteIMA symbolKln1.00infobox
KaoliniteLusterPearly to dull earthy1.00infobox
KaoliniteMohs scale hardness2–2.51.00infobox
KaoliniteOptical propertiesBiaxial (–)1.00infobox
KaoliniteRefractive indexnα = 1.553–1.565, nβ = 1.559–1.569, nγ = 1.569–1.5701.00infobox
KaoliniteSpace groupP11.00infobox
KaoliniteSpecific gravity2.16–2.681.00infobox
KaoliniteStreakWhite1.00infobox
KaoliniteStrunz classification9.ED.051.00infobox
KaoliniteTenacityFlexible but inelastic1.00infobox
KaoliniteUnit cella = 5.13 Å, b = 8.89 Å c = 7.25 Å; α = 90° β = 104.5°, γ = 89.8°; Z = 21.00infobox
Kaoliniteis asoft0.90text

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