mineral

Rhodochrosite

Manganese carbonate (MnCO3)

Hardness: 3.5-4.0; Color: Raspberry pink to pale pink with white banding; Luster: Vitreous to pearly; Crystal Structure: Trigonal; Cleavage: Perfect rhombohedral; Specific Gravity: 3.4-3.7

Hardness: 3
Color: Raspberry pink to pale pink with white banding
Luster: Vitreous to pearly

Identified March 28, 2026More mineral →

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Physical properties

Hardness: 3.5-4.0; Color: Raspberry pink to pale pink with white banding; Luster: Vitreous to pearly; Crystal Structure: Trigonal; Cleavage: Perfect rhombohedral; Specific Gravity: 3.4-3.7

Formation & geological history

Formed as a secondary mineral in hydrothermal veins and sedimentary deposits. It often occurs as a manganese oxidation product. Major deposits date from various periods, but high-quality stalactitic forms are frequently found in Inca cave mines.

Uses & applications

Used primarily as an ore of manganese, but highly valued in jewelry (cabochons), as an ornamental stone, and as a popular collector's mineral.

Geological facts

Known as the 'Inca Rose' (Rosa del Inca) because the Incas believed it was the solidified blood of their former kings. Argentina is one of the most famous sources for the distinctive banded varieties.

Field identification & locations

Identify in the field by its characteristic pink color and white zigzag bands, and reactiveness to warm hydrochloric acid. Found in Argentina, Colorado (Sweet Home Mine), South Africa, and Peru.