Definitions for brookite
brookite

WiktionaryRate this definition:0.0 / 0 votes

1. brookitenoun

   A dark brown mineral form of titanium dioxide, with the chemical formula TiO.

WikipediaRate this definition:0.0 / 0 votes

1. Brookite

   Brookite is the orthorhombic variant of titanium dioxide (TiO2), which occurs in four known natural polymorphic forms (minerals with the same composition but different structure). The other three of these forms 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 also 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 in brookite.Brookite was named in 1825 by French mineralogist Armand Lévy for Henry James Brooke (1771–1857), an English crystallographer, mineralogist and wool trader.Arkansite is a variety of brookite from Magnet Cove, Arkansas, US. It is also found in the Murun Massif on the Olyokma-Chara Plateau of Eastern Siberia, Russia, part of the Aldan Shield.At temperatures above about 750 °C, brookite will revert to the rutile structure.

Webster DictionaryRate this definition:0.0 / 0 votes

1. Brookitenoun

   a mineral consisting of titanic oxide, and hence identical with rutile and octahedrite in composition, but crystallizing in the orthorhombic system

WikidataRate this definition:0.0 / 0 votes

1. Brookite

   Brookite is orthorhombic, and one of the four naturally occurring polymorphs of titanium dioxide, TiO2, approved by the International Mineralogical Association. The others are akaogiite, anatase and rutile. 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, 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.

How to pronounce brookite?

1. Alex

   US English

   David

   US English

   Mark

   US English

   Daniel

   British

   Libby

   British

   Mia

   British

   Karen

   Australian

   Hayley

   Australian

   Natasha

   Australian

   Veena

   Indian

   Priya

   Indian

   Neerja

   Indian

   Zira

   US English

   Oliver

   British

   Wendy

   British

   Fred

   US English

   Tessa

   South African

How to say brookite in sign language?

Numerology

1. Chaldean Numerology

   The numerical value of brookite in Chaldean Numerology is: 3

2. Pythagorean Numerology

   The numerical value of brookite in Pythagorean Numerology is: 5

Popularity rank by frequency of use

References

1. ^ Wiktionary
   https://en.wiktionary.org/wiki/Brookite
2. ^ Wikipedia
   https://en.wikipedia.org/wiki/Brookite
3. ^ Webster Dictionary
   https://www.merriam-webster.com/dictionary/brookite
4. ^ Wikidata
   https://www.wikidata.org/w/index.php?search=brookite