Malachite

Cu2(CO3)(OH)2

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A vivid green copper carbonate (Cu2(CO3)(OH)2), malachite has been used as a pigment and gemstone for thousands of years. It crystallizes in the monoclinic system, most commonly as botryoidal, stalactitic, or banded massive aggregates whose concentric green bands make it a favorite for decorative objects. The mineral is translucent with a vitreous luster, a light-green streak, and perfect {201} cleavage; its Mohs hardness is 3.5 to 4 and its specific gravity 3.60 to 4.00. Malachite forms in the oxidized zones of copper deposits, frequently alongside azurite. A light-green streak and perfect cleavage help confirm the mineral where weathering has dulled its surface.

碱式碳酸铜矿物,呈绿色。与孔雀石共产,具有同心条纹,用作宝石。

晶系 Monoclinic
矿物分类 05 Carbonates and Nitrates
莫氏硬度 3.5-4.0
比重 3.60-4.00
颜色 Bright green, dark green
光泽 Vitreous
条痕色 Light green
解理 Perfect {201}
断口 Subconchoidal to uneven
透明度 Translucent
晶体习性 Botryoidal, stalactitic, banded massive

莫氏硬度

Mohs Hardness: 3.5 – 4.0
1 Soft10 Hard
Malachite has a Mohs hardness of 3.5–4 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

Monoclinic
Malachite crystallizes in the Monoclinic crystal system.
特性 Value
晶系 Monoclinic
Axial Relationships a ≠ b ≠ c, α = γ = 90°, β ≠ 90°

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Frequently Asked Questions

What is the hardness of Malachite?
Malachite has a Mohs hardness of 3.5-4.0.
What crystal system does Malachite belong to?
Malachite crystallizes in the Monoclinic crystal system.
What color is Malachite?
Malachite is typically Bright green, dark green.
What type of luster does Malachite have?
Malachite exhibits a Vitreous luster.
What is the chemical formula of Malachite?
The chemical formula of Malachite is Cu2(CO3)(OH)2.