mineral

Rhodochrosite

Rhodochrosite, Manganese Carbonate (MnCO3)

AI-generated identification · may be incorrect

Hardness: 3.5-4, Color: Rose-red to pale pink, often with white or gray banding, Luster: Vitreous to pearly, Crystal structure: Trigonal, Cleavage: Perfect rhombohedral, Specific gravity: 3.5-3.7

Hardness: 3

Identified July 3, 2026More mineral →

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Physical properties

Hardness: 3.5-4, Color: Rose-red to pale pink, often with white or gray banding, Luster: Vitreous to pearly, Crystal structure: Trigonal, Cleavage: Perfect rhombohedral, Specific gravity: 3.5-3.7

Formation & geological history

Forms in hydrothermal veins associated with silver, copper, and lead sulfides, and in some metamorphic rocks and sedimentary deposits.

Uses & applications

Used primarily as an ore of manganese, and extensively in jewelry and lapidary arts due to its beautiful pink color and banding. Highly valued by mineral collectors.

Geological facts

Rhodochrosite is the national gemstone of Argentina (often featuring stalactitic banding as seen in the 'Inca Rose' variety) and the state mineral of Colorado, USA, home of the famous Sweet Home Mine.

Field identification & locations

Identified by its distinctive pink color, often with white banding, and its relatively low hardness and reaction to warm hydrochloric acid. Banded massive material is commonly found in Argentina.