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.

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결정계 Monoclinic
광물 분류 05 Carbonates and Nitrates
모스 경도 3.5-4.0
비중 3.60-4.00
색상 Bright green, dark green
광택 Vitreous
조흔색 Light green
벽개 Perfect {201}
단구 Subconchoidal to uneven
투명도 Translucent
결정 습성 Botryoidal, stalactitic, banded massive

모스 경도

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

결정계

Monoclinic
Malachite crystallizes in the Monoclinic crystal system.
특성 Value
결정계 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.