rutile

American  

[roo-teel, -tahyl] / ˈru til, -taɪl /

noun

1. a common mineral, titanium dioxide, TiO 2 , usually reddish-brown in color with a brilliant metallic or adamantine luster, occurring in crystals: used to coat welding rods.

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rutile British  

/ ˈruːtaɪl /

noun

1. a black, yellowish, or reddish-brown mineral, found in igneous rocks, metamorphosed limestones, and quartz veins. It is a source of titanium. Composition: titanium dioxide. Formula: TiO 2 . Crystal structure: tetragonal

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rutile Scientific  

/ ro̅o̅′tēl′,-tīl′ /

1. A lustrous red, reddish-brown, or black tetragonal mineral that is an ore of titanium. Rutile usually occurs as prismatic crystals in other minerals, especially as dark needlelike crystals in quartz. Chemical formula: TiO ₂ .

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Etymology

Origin of rutile

1795–1805; < French < German Rutil < Latin rutilus red ¹

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Example Sentences

See Examples For:

rutile

Anand says Iluka’s 1Q total zircon, rutile, and synthetic rutile output misses expectations, falling roughly 23% below both consensus and MS estimates.

From The Wall Street Journal ● Apr. 22, 2026

Cubic zirconia and rutile titania could meet demand in theory, but economic modeling by the Columbia team suggests production costs would skyrocket with increased demand.

From Science Daily ● Oct. 21, 2025

Australia is the world’s top producer of lithium and rutile and the second-largest producer of zircon and rare earth elements.

From Seattle Times ● Oct. 22, 2022

Native gold, native platinum, zircon, ilmenite, rutile, magnetite, diamonds, and other gemstones can be found in placers.

From Textbooks ● Jan. 1, 2017

It is traversed by veins of quartz, containing cannulated and often articulated prisms of rutile titanite two or three lines in diameter.

From Personal Narrative of Travels to the Equinoctial Regions of America, During the Year 1799-1804 — Volume 1 by Thomasina Ross

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