mineral

Rhodochrosite

Manganese carbonate (MnCO3)

Hardness: 3.5-4.0 (Mohs scale), Color: Rose-pink to cherry red, Luster: Vitreous to pearly, Crystal structure: Trigonal/Rhombohedral, Cleavage: Perfect rhombohedral, Specific Gravity: 3.5-3.7

Hardness: 3

Identified March 31, 2026More mineral →

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Physical properties

Hardness: 3.5-4.0 (Mohs scale), Color: Rose-pink to cherry red, Luster: Vitreous to pearly, Crystal structure: Trigonal/Rhombohedral, Cleavage: Perfect rhombohedral, Specific Gravity: 3.5-3.7

Formation & geological history

Forms in hydrothermal veins associated with silver, copper, and lead deposits; also as a secondary mineral in sedimentary deposits. Can be found in Precambrian to Cenozoic formations.

Uses & applications

Used primarily as an ornamental stone and in jewelry (beads, cabochons). Historically an ore of manganese, but largely used today for collecting and metaphysical purposes.

Geological facts

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

Field identification & locations

Identify by its distinctive pink-to-red color and white banding (when in stalactitic form). It will effervesce (fizz) in warm hydrochloric acid. Crystals are rare and highly sought after.