mineral

Rhodochrosite

Manganese carbonate (MnCO3)

Hardness: 3.5-4.0; Color: Raspberry-red, pink, or rose; Luster: Vitreous to pearly; Crystal structure: Trigonal; Cleavage: Perfect rhombohedral; Specific Gravity: 3.4-3.7.

Hardness: 3
Color: Raspberry-red, pink, or rose
Luster: Vitreous to pearly

Identified March 29, 2026More mineral →

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Physical properties

Hardness: 3.5-4.0; Color: Raspberry-red, pink, or rose; Luster: Vitreous to pearly; Crystal structure: Trigonal; Cleavage: Perfect rhombohedral; Specific Gravity: 3.4-3.7.

Formation & geological history

Formed in hydrothermal veins of middle-to-low temperatures, often associated with silver, lead, and copper deposits. Secondary formation also occurs in sedimentary manganese deposits.

Uses & applications

Primary use is as an ornamental gemstone for jewelry (beads, cabochons) and as a lapidary material. It also serves as a minor ore of manganese for steel production.

Geological facts

Known as the 'Inca Rose' because the Incas believed it was the solidified blood of their former kings. It is the national gemstone of Argentina and the state mineral of Colorado.

Field identification & locations

Identify by its distinctive pink color and white banding (in botryoidal forms). In the field, look for its softness and reaction (effervescence) to warm hydrochloric acid. Found in Argentina, Peru, South Africa, and the USA (Sweet Home Mine).