mineral
Rhodonite
Manganese Silicate (Mn,Fe,Mg,Ca)SiO3
AI-generated identification · may be incorrectHardness: 5.5-6.5 on Mohs scale; Color: Pink to rosy red with black manganese oxide veins; Luster: Vitreous to pearly; Crystal Structure: Triclinic; Specific Gravity: 3.5-3.7
- Hardness
- 5
- Color
- Pink to rosy red with black manganese oxide veins
- Luster
- Vitreous to pearly
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Physical properties
Hardness: 5.5-6.5 on Mohs scale; Color: Pink to rosy red with black manganese oxide veins; Luster: Vitreous to pearly; Crystal Structure: Triclinic; Specific Gravity: 3.5-3.7
Formation & geological history
Formed in metamorphic rocks rich in manganese through hydrothermal processes or metasomatism. Often found in ore deposits and gneiss.
Uses & applications
Commonly used for ornamental carvings, jewelry (cabochons and beads), and as a manganese ore. Valued by collectors for its distinct pink and black contrast.
Geological facts
The name comes from the Greek word 'rhodon', meaning rose-colored. It is the state gemstone of Massachusetts, USA. Significant deposits exist in Russia, Australia, and Brazil.
Field identification & locations
Identify by its characteristic 'patchy' appearance of pink mixed with dendritic black manganese oxides. It is heavier than similar-looking rhodochrosite and lacks the latter's reactive fizzing to acid.
