Rutile

TiO2

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Rutile is the most common natural form of titanium dioxide and an important ore of titanium. Its golden needle-like crystals enclosed in quartz (rutilated quartz) are prized as gemstones. It also occurs as the 'silk' inclusions in star rubies and sapphires.

Crystal System Tetragonal
Mineral Class 04 Oxides and Hydroxides
Mohs Hardness 6.0-6.5
Specific Gravity 4.18-4.25
Color Reddish-brown, red, black, golden
Luster Adamantine
Streak Light brown
Cleavage Good {110}
Fracture Conchoidal to uneven
Transparency Translucent
Crystal Habit Prismatic, acicular, twinned (geniculated)

Mohs Hardness

Mohs Hardness: 6.0 – 6.5
1 Soft10 Hard

Crystal System

Tetragonal

Frequently Asked Questions

What is the hardness of Rutile?
Rutile has a Mohs hardness of 6.0-6.5.
What crystal system does Rutile belong to?
Rutile crystallizes in the Tetragonal crystal system.
What color is Rutile?
Rutile is typically Reddish-brown, red, black, golden.
What type of luster does Rutile have?
Rutile exhibits a Adamantine luster.
What is the chemical formula of Rutile?
The chemical formula of Rutile is TiO2.