Rhodochrosite

Physical Properties

Hardness: 3.5-4.0 on Mohs scale; Color: Pink, rose-red, cherry-red, to brown; Luster: Vitreous to pearly; Crystal Structure: Trigonal; Cleavage: Perfect rhombohedral; Specific Gravity: 3.4-3.7

Formation & Geological History

Formed in hydrothermal veins or as a secondary mineral in manganese deposits. Significant stalactitic formations occur in old silver mines. Commonly found in Argentina, Peru, Colorado (USA), and South Africa.

Uses & Applications

Primarily used as a gemstone (cabochons) and a minor ore of manganese. Highly valued by mineral collectors for its distinctive pink banding.

Geological Facts

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

Field Identification & Locations

Check for distinctive pink and white 'bacon' banding and a low hardness (can be scratched by a copper coin). It will effervesce in warm hydrochloric acid. Found in hydrothermal ore veins and sedimentary manganese deposits.

Identified on: 5/13/2026

Mode: Standard