Azurite

Cu3(CO3)2(OH)2

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Prized since antiquity for its intense azure color, azurite is a monoclinic copper carbonate (Cu3(CO3)2(OH)2) that served for centuries as a blue pigment. It occurs in the oxidized zones of copper ore bodies, frequently alongside malachite, into which it may alter pseudomorphically over time. The mineral is transparent with a vitreous luster, a light-blue streak, and perfect {011} cleavage, building prismatic, tabular, or massive aggregates. Hardness falls between 3.5 and 4, and specific gravity between 3.77 and 3.89. Deep-blue crystals from Morocco and Namibia rank among the specimens most sought by collectors, and the mineral's darker tone distinguishes it from paler blue copper species.

Azurite is an intense blue copper carbonate mineral, historically important as a blue pigment. It commonly occurs with malachite and may pseudomorphously replace to malachite. Fine azurite crystals from Morocco and Namibia are highly sought by collectors.

晶系 Monoclinic
矿物分类 05 Carbonates and Nitrates
莫氏硬度 3.5-4.0
比重 3.77-3.89
颜色 Azure blue, dark blue
光泽 Vitreous
条痕色 Light blue
解理 Perfect {011}, fair {100}
断口 Conchoidal
透明度 Transparent
晶体习性 Prismatic, tabular, massive

莫氏硬度

Mohs Hardness: 3.5 – 4.0
1 Soft10 Hard
Azurite 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
Azurite crystallizes in the Monoclinic crystal system.
特性 Value
晶系 Monoclinic
Axial Relationships a ≠ b ≠ c, α = γ = 90°, β ≠ 90°

Frequently Asked Questions

What is the hardness of Azurite?
Azurite has a Mohs hardness of 3.5-4.0.
What crystal system does Azurite belong to?
Azurite crystallizes in the Monoclinic crystal system.
What color is Azurite?
Azurite is typically Azure blue, dark blue.
What type of luster does Azurite have?
Azurite exhibits a Vitreous luster.
What is the chemical formula of Azurite?
The chemical formula of Azurite is Cu3(CO3)2(OH)2.