Rutile

TiO2

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The commonest natural form of titanium dioxide (TiO2), rutile is an important ore of titanium that crystallizes in the tetragonal system. It appears in prismatic, acicular, or geniculated twinned crystals with an adamantine luster, a light-brown streak, good {110} cleavage, and colors from reddish-brown and red to black and golden. Its Mohs hardness is 6 to 6.5 and its specific gravity 4.18 to 4.25. Golden needle-like rutile crystals enclosed in quartz, known as rutilated quartz, are cut as gemstones, and fine rutile inclusions produce the silk that gives rise to star rubies and sapphires. A high specific gravity and adamantine luster distinguish rutile from the darker oxides it can resemble.

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.

Kristal Sistemi Tetragonal
Mineral Sınıfı 04 Oxides and Hydroxides
Mohs Sertliği 6.0-6.5
Özgül Ağırlık 4.18-4.25
Renk Reddish-brown, red, black, golden
Parlaklık Adamantine
Çizgi Rengi Light brown
Dilimlenme Good {110}
Kırılma Conchoidal to uneven
Şeffaflık Translucent
Kristal Alışkanlığı Prismatic, acicular, twinned (geniculated)

Mohs Sertliği

Mohs Hardness: 6,0 – 6,5
1 Soft10 Hard
Rutile has a Mohs hardness of 6–6.5 on the 1–10 mineral hardness scale.
Mohs Sertliği Reference Mineral
1 Talc
2 Gypsum
3 Calcite
4 Fluorite
5 Apatite
6 Orthoclase
7 Quartz
8 Topaz
9 Corundum
10 Diamond

Kristal Sistemi

Tetragonal
Rutile crystallizes in the Tetragonal crystal system.
Özellik Value
Kristal Sistemi Tetragonal
Axial Relationships a = b ≠ c, α = β = γ = 90°

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.