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CRYSTALS2COLLECT A.C.N 651.525.727 Pty Ltd

BROOKITE, SINGLE CRYSTAL

BROOKITE, SINGLE CRYSTAL

Regular price $275.00 AUD
Regular price Sale price $275.00 AUD
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Size (HWD in mm)
Origin
Specimen nr.

Brookite is an orthorhombic form of titanium dioxide (TiO2) and is one of four recognized natural polymorphs, differing in structure while sharing the same composition. The other three polymorphs are akaogiite (monoclinic), anatase (tetragonal), and rutile (tetragonal). Compared to anatase and rutile, brookite is relatively rare and, like its counterparts, demonstrates photocatalytic properties. It features a larger cell volume, containing eight TiO2 units per cell, in contrast to anatase's four and rutile's two. Common impurities found in brookite include iron (Fe), tantalum (Ta), and niobium (Nb). 

The mineral was named in 1825 by French mineralogist Armand Lévy in honor of Henry James Brooke, an English crystallographer and mineralogist. A specific variety known as arkansite is found in Magnet Cove, Arkansas, and brookite is also located in the Murun Massif on the Olyokma-Chara Plateau in Eastern Siberia, Russia. At temperatures exceeding approximately 750 °C, brookite transforms back into the rutile structure.

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Dimensions and Weight are mentioned n the product description and will be used during check out to calculate the shipping costs. For example: 55 45 25 127 means Length 55 mm, Width 45 mm, Height 25 mm, Weight 127 grams. The weight is the approximate nett weight of the specimen including the mount (where applicable).

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