RHODOCHROSITE CHARACTERISTICS Origin of the name: From the Greek “rhodon” meaning “rose”. Chemical Composition: Manganese carbonate, MnCO3. Hardness: 4 Crystal system: Rhombohedral Deposits: Argentina, United States, Peru. Color(s): Pale pink, light pink. History and Legends: Lithotherapy Properties: Physical Properties: Signs of the zodiac: Chinese signs: Chakra: