anatase

American  

[an-uh-teys, -teyz] / ˈæn əˌteɪs, -ˌteɪz /

noun

Mineralogy.

1. a naturally occurring crystalline form of titanium dioxide, TiO 2 .

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anatase British  

/ ˈænəˌteɪz /

noun

1. Also called: octahedrite.  a rare blue or black mineral that consists of titanium oxide in tetragonal crystalline form and occurs in veins in igneous rocks. Formula: TiO 2

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Etymology

Origin of anatase

1835–45; < French < Greek anátasis, equivalent to ana- ana- + ta- (variant stem of teínein to stretch) + -sis -sis

Example Sentences

Proposed alternatives include minerals such as calcium carbonate, alpha alumina, rutile and anatase titania, cubic zirconia, and even diamond.

From Science Daily • Oct. 21, 2025

Titanic acid occurs in nature crystallized in anatase, arkansite, brookite, and rutile.

From A System of Instruction in the Practical Use of the Blowpipe Being A Graduated Course Of Analysis For The Use Of Students And All Those Engaged In The Examination Of Metallic Combinations by Anonymous

Brookite occurs only as crystals, never in compact masses, and is usually associated with either anatase or rutile.

From Encyclopaedia Britannica, 11th Edition, Volume 4, Part 3 "Brescia" to "Bulgaria" by Various

For example, in cassiterite it is given as a : c = 1 : 0.67232 or simply as c = 0.67232, a being unity; and in anatase as c = 1.7771.

From Encyclopaedia Britannica, 11th Edition, Volume 7, Slice 7 "Crocoite" to "Cuba" by Various

The best-known locality is Fronolen near Tremadoc in North Wales, where crystals of the thin tabular habit occur with crystallized quartz, albite and anatase on the walls of crevices in diabase.

From Encyclopaedia Britannica, 11th Edition, Volume 4, Part 3 "Brescia" to "Bulgaria" by Various