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 is a manganese carbonate mineral prized for its beautiful rose-red to pink color. Banded rhodochrosite from Argentina is particularly famous and is the national mineral of Argentina. Fine crystal specimens come from the Sweet Home Mine in Colorado.

Système Cristallin Trigonal
Classe Minérale 05 Carbonates and Nitrates
Dureté Mohs 3.5-4.0
Densité 3.45-3.70
Couleur Rose-red, pink, brown, gray
Éclat Vitreous
Trait White
Clivage Perfect rhombohedral {1011}
Cassure Conchoidal to uneven
Transparence Translucent
Habitus Cristallin Rhombohedral, massive, banded, stalactitic

Dureté Mohs

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

Système Cristallin

Trigonal
Rhodochrosite crystallizes in the Trigonal crystal system.
Propriété Value
Système Cristallin 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.