Rhodochrosite

MnCO3

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Rhodochrosite is a manganese carbonate (MnCO3) prized for its rose-red to pink color. It crystallizes in the trigonal system, forming rhombohedral crystals as well as massive, banded, and stalactitic aggregates, with a vitreous luster, a white streak, and perfect rhombohedral cleavage. Its Mohs hardness is 3.5 to 4 and its specific gravity 3.45 to 3.70. Banded rhodochrosite from Argentina is especially well known and serves as that country's national mineral, while superb crystallized specimens come from the Sweet Home Mine in Colorado. Its perfect rhombohedral cleavage and translucent vitreous crystals aid identification, and a Mohs hardness of 3.5 to 4 places it among the softer carbonates.

Rhodochrositeは、美しいバラ赤色～ピンク色で知られるマンガン炭酸塩鉱物である。アルゼンチン産の縞模様のロードクロサイトは特に有名で、アルゼンチンの国石である。コロラド州Sweet Home鉱山から素晴らしい結晶標本が産出される。

晶系 Trigonal
鉱物分類 05 Carbonates and Nitrates
モース硬度 3.5-4.0
比重 3.45-3.70
色 Rose-red, pink, brown, gray
光沢 Vitreous
条痕色 White
劈開 Perfect rhombohedral {1011}
断口 Conchoidal to uneven
透明度 Translucent
結晶習性 Rhombohedral, massive, banded, stalactitic

モース硬度

Mohs Hardness: 3.5 – 4.0
1 Soft10 Hard
Rhodochrosite has a Mohs hardness of 3.5–4 on the 1–10 mineral hardness scale.
モース硬度 Reference Mineral
1 Talc
2 Gypsum
3 Calcite
4 Fluorite
5 Apatite
6 Orthoclase
7 Quartz
8 Topaz
9 Corundum
10 Diamond

晶系

Trigonal
Rhodochrosite crystallizes in the Trigonal crystal system.
特性 Value
晶系 Trigonal (Rhombohedral)
Axial Relationships a = b = c, α = β = γ ≠ 90°

Frequently Asked Questions

What is the hardness of Rhodochrosite?
Rhodochrosite has a Mohs hardness of 3.5-4.0.
What crystal system does Rhodochrosite belong to?
Rhodochrosite crystallizes in the Trigonal crystal system.
What color is Rhodochrosite?
Rhodochrosite is typically Rose-red, pink, brown, gray.
What type of luster does Rhodochrosite have?
Rhodochrosite exhibits a Vitreous luster.
What is the chemical formula of Rhodochrosite?
The chemical formula of Rhodochrosite is MnCO3.