mineral

Rhodochrosite

Manganese carbonate (MnCO3)

Hardness: 3.5-4.0 (Mohs scale), Color: Pink to rose-red, Luster: Vitreous to pearly, Crystal structure: Trigonal, Cleavage: Perfect rhombohedral, Specific gravity: 3.5-3.7

Hardness: 3

Identified July 14, 2026More mineral →

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Physical properties

Hardness: 3.5-4.0 (Mohs scale), Color: Pink to rose-red, Luster: Vitreous to pearly, Crystal structure: Trigonal, Cleavage: Perfect rhombohedral, Specific gravity: 3.5-3.7

Formation & geological history

Forms as a hydrothermal vein mineral in low-temperature ore deposits, or as a secondary mineral in sedimentary manganese deposits. Often found in association with silver and copper minerals.

Uses & applications

Used as a semi-precious gemstone in jewelry (cabochons and beads), a minor ore of manganese, and highly prized by mineral collectors for its unique pink banding.

Geological facts

Known as the 'Inca Rose' by ancient civilizations; it is the state mineral of Colorado, and the famous 'Sweet Home Mine' produced the world's most iconic cherry-red specimens.

Field identification & locations

Identified by its characteristic raspberry pink to rose color and distinctive white banding. In the field, look for its softness (scratches with a knife) and reaction to warm dilute acid.