Chrysocolla

(Cu,Al)2H2Si2O5(OH)4 · nH2O

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Recognizable by its brilliant blue to green tones, chrysocolla is a hydrated copper phyllosilicate with the approximate formula (Cu,Al)2H2Si2O5(OH)4 nH2O. It forms in the oxidation zones of copper deposits, commonly associated with malachite, azurite, and turquoise. The mineral is translucent with a vitreous luster and a white to pale-blue streak, showing no cleavage and a conchoidal fracture. Habits are botryoidal, massive, or stalactitic. Its hardness varies considerably, from 2 to 4, and its specific gravity from 1.93 to 2.40. Chrysocolla is worked as an ornamental stone, valued for the vivid turquoise-like coloration it draws from copper. Both its density and its hardness vary widely, reflecting a variable water content and frequent admixture with other minerals.

Chrysocolla is a hydrated copper phyllosilicate mineral known for its brilliant blue to green colors. It is commonly found in oxidation zones of copper deposits, often associated with malachite, azurite, and turquoise.

晶系 Orthorhombic
矿物分类 09 Silicates
莫氏硬度 2.0-4.0
比重 1.93-2.40
颜色 Blue, blue-green, green, turquoise
光泽 Vitreous
条痕色 White to pale blue
解理 None
断口 Conchoidal
透明度 Translucent
晶体习性 Botryoidal, massive, stalactitic

莫氏硬度

Mohs Hardness: 2.0 – 4.0
1 Soft10 Hard
Chrysocolla has a Mohs hardness of 2–4 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

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

Frequently Asked Questions

What is the hardness of Chrysocolla?
Chrysocolla has a Mohs hardness of 2.0-4.0.
What crystal system does Chrysocolla belong to?
Chrysocolla crystallizes in the Orthorhombic crystal system.
What color is Chrysocolla?
Chrysocolla is typically Blue, blue-green, green, turquoise.
What type of luster does Chrysocolla have?
Chrysocolla exhibits a Vitreous luster.
What is the chemical formula of Chrysocolla?
The chemical formula of Chrysocolla is (Cu,Al)2H2Si2O5(OH)4 · nH2O.