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- Brookite abstract "Brookite is orthorhombic, and one of the four naturally occurring polymorphs (minerals with the same composition but different structure) of titanium dioxide, TiO2, approved by the International Mineralogical Association (IMA). The others are akaogiite (monoclinic), anatase (tetragonal) and rutile (tetragonal). Brookite is rare compared to anatase and rutile and, like these forms, it exhibits photocatalytic activity. Brookite has a larger cell volume than either anatase or rutile, with 8 TiO2 groups per unit cell, compared with 4 for anatase and 2 for rutile. Iron Fe, tantalum Ta and niobium Nb are common impurities.It was named in 1825 for Henry James Brooke (1771–1857), an English crystallographer, mineralogist and wool trader.Arkansite is a variety of brookite from Arkansas, USA, that is also found in the Murunskii Massif, in the Eastern Siberian region of Russia, where many other unusual minerals occur.At temperatures above about 750 °C, brookite will revert to the rutile structure.".
- Brookite thumbnail Brookite-mun05-22b.jpg?width=300.
- Brookite wikiPageExternalLink c21.html.
- Brookite wikiPageExternalLink viewJmol.php?id=05208.
- Brookite wikiPageExternalLink tio2.html.
- Brookite wikiPageID "184300".
- Brookite wikiPageRevisionID "551026574".
- Brookite 2v "Calculated: 12° to 20°".
- Brookite birefringence "δ = 0.117".
- Brookite caption "Brookite from Balochistan".
- Brookite category Oxide_minerals.
- Brookite cleavage "Poor on {120}, in traces on {001}".
- Brookite color "Deep red, reddish brown, yellowish brown, brown, or black".
- Brookite dana "4.4".
- Brookite diaphaneity "Opaque to translucent".
- Brookite dispersion "0.131".
- Brookite fluorescence "Non-fluorescent".
- Brookite formula "TiO2".
- Brookite fracture "Subconchoidal to irregular".
- Brookite gravity "4.08".
- Brookite habit "Tabular and striated, pyramidal or pseudohexagonal".
- Brookite hasPhotoCollection Brookite.
- Brookite luster "Submetallic".
- Brookite mohs "5".
- Brookite molweight "79.88".
- Brookite name "Brookite".
- Brookite opticalprop "Biaxial".
- Brookite pleochroism "Very weak, yellowish, reddish, orange to brown".
- Brookite refractive "nα = 2.583 nβ = 2.584 nγ = 2.700".
- Brookite streak "White, greyish or yellowish".
- Brookite strunz "4".
- Brookite symmetry "Orthorhombic 2/m 2/m 2/m dipyramidal".
- Brookite system Orthorhombic_crystal_system.
- Brookite tenacity "Brittle".
- Brookite twinning "On {120}, uncertain".
- Brookite unitCell "Z = 8, a = 5.4558 Å, b = 9.1819 Å, c = 5.1429 Å".
- Brookite subject Category:Articles_created_via_the_Article_Wizard.
- Brookite subject Category:Orthorhombic_minerals.
- Brookite subject Category:Oxide_minerals.
- Brookite subject Category:Titanium_minerals.
- Brookite type Abstraction100002137.
- Brookite type Material114580897.
- Brookite type Matter100020827.
- Brookite type Mineral114662574.
- Brookite type OrthorhombicMinerals.
- Brookite type OxideMinerals.
- Brookite type Part113809207.
- Brookite type PhysicalEntity100001930.
- Brookite type Relation100031921.
- Brookite type Substance100019613.
- Brookite type TitaniumMinerals.
- Brookite type ChemicalSubstance.
- Brookite type Mineral.
- Brookite type ChemicalObject.
- Brookite type Thing.
- Brookite comment "Brookite is orthorhombic, and one of the four naturally occurring polymorphs (minerals with the same composition but different structure) of titanium dioxide, TiO2, approved by the International Mineralogical Association (IMA). The others are akaogiite (monoclinic), anatase (tetragonal) and rutile (tetragonal). Brookite is rare compared to anatase and rutile and, like these forms, it exhibits photocatalytic activity.".
- Brookite label "Brookiet".
- Brookite label "Brookit".
- Brookite label "Brookit".
- Brookite label "Brookita".
- Brookite label "Brookita".
- Brookite label "Brookite".
- Brookite label "Brookite".
- Brookite label "Brookite".
- Brookite label "Брукит".
- Brookite label "板チタン石".
- Brookite sameAs Brookit.
- Brookite sameAs Brookit.
- Brookite sameAs Βρουκίτης.
- Brookite sameAs Brookita.
- Brookite sameAs Brookite.
- Brookite sameAs Brookite.
- Brookite sameAs 板チタン石.
- Brookite sameAs Brookiet.
- Brookite sameAs Brookit.
- Brookite sameAs Brookita.
- Brookite sameAs m.0195jv.
- Brookite sameAs Q410609.
- Brookite sameAs Q410609.
- Brookite sameAs Brookite.
- Brookite wasDerivedFrom Brookite?oldid=551026574.
- Brookite depiction Brookite-mun05-22b.jpg.
- Brookite isPrimaryTopicOf Brookite.
- Brookite name "Brookite".
