mineral

Rhodochrosite

Manganese Carbonate (MnCO3)

Hardness: 3.5-4 (Mohs); Color: Rose-red, pink, or pale brown; Luster: Vitreous to pearly; Crystal structure: Trigonal; Cleavage: Perfect rhombohedral; Specific gravity: 3.5-3.7

Hardness: 3
Color: Rose-red, pink, or pale brown
Luster: Vitreous to pearly

Identified June 29, 2026More mineral →

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Physical properties

Hardness: 3.5-4 (Mohs); Color: Rose-red, pink, or pale brown; Luster: Vitreous to pearly; Crystal structure: Trigonal; Cleavage: Perfect rhombohedral; Specific gravity: 3.5-3.7

Formation & geological history

Formed in hydrothermal veins associated with silver, copper, and lead deposits, and in sedimentary environments as a secondary mineral. Common in Argentinian 'Inca Rose' mines.

Uses & applications

Used primarily as an ornamental gemstone for jewelry, cabochons, and decorative carvings. Historically used as a minor manganese ore.

Geological facts

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

Field identification & locations

Identified by its distinctive raspberry-pink color and white 'bacon-strip' banding in carving-grade specimens. Reacts weakly to cold dilute hydrochloric acid.