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rutile
[ roo-teel, -tahyl ]
noun
- 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.
rutile
/ ˈruːtaɪl /
noun
- 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
rutile
/ ro̅o̅′tēl′,-tīl′ /
- 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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Word History and Origins
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Word History and Origins
Origin of rutile1
C19: via French from German Rutil , from Latin rutilus red, glowing
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Example Sentences
Biotite, if present, is brown; epidote is yellow or colourless; rutile, apatite and quartz all occur with some frequency.
From Project Gutenberg
Its most common ore is rutile (TiO2), which resembles silica in many respects.
From Project Gutenberg
Rutile is much lighter, 4·2, and the streak light-brown; tourmaline is only 3·2.
From Project Gutenberg
There is no distinct cleavage (rutile and anatase have cleavages); hardness 5-6; sp.
From Project Gutenberg
Minute crystals of brookite have been detected with anatase and rutile in the iron-ore of Cleveland in Yorkshire.
From Project Gutenberg
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