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.

二氧化钛矿物,呈红褐色至黑色。因其高折射率而用于宝石学和光学应用。

晶系 Tetragonal
矿物分类 04 Oxides and Hydroxides
莫氏硬度 6.0-6.5
比重 4.18-4.25
颜色 Reddish-brown, red, black, golden
光泽 Adamantine
条痕色 Light brown
解理 Good {110}
断口 Conchoidal to uneven
透明度 Translucent
晶体习性 Prismatic, acicular, twinned (geniculated)

莫氏硬度

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.
莫氏硬度 Reference Mineral
1 Talc
2 Gypsum
3 Calcite
4 Fluorite
5 Apatite
6 Orthoclase
7 Quartz
8 Topaz
9 Corundum
10 Diamond

晶系

Tetragonal
Rutile crystallizes in the Tetragonal crystal system.
特性 Value
晶系 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.