mineral
Rhodonite
Rhodonite (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 dendritic inclusions of manganese oxide; Luster: Vitreous to pearly; Crystal structure: Triclinic; Cleavage: Perfect in two directions; Specific Gravity: 3.5-3.7
- Hardness
- 5
- 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 dendritic inclusions of manganese oxide; Luster: Vitreous to pearly; Crystal structure: Triclinic; Cleavage: Perfect in two directions; Specific Gravity: 3.5-3.7
Formation & geological history
Formed through regional or contact metamorphism and hydrothermal processes. It is often found in manganese-rich metamorphic rocks and hydrothermal veins.
Uses & applications
Primarily used as an ornamental stone, for lapidary work (cabochons, beads), and occasionally as an ore of manganese. It is popular in jewelry and for carving decorative objects.
Geological facts
The name comes from the Greek word 'rhodos', meaning rosy. It was once used in Russia as a stone for sarcophagi of czars and is the state gemstone of Massachusetts.
Field identification & locations
Identify in the field by its distinct pink color contrasted with black manganese oxide veins or patches. It is harder than rhodochrosite (which fizzes in acid). Common locations include Russia, Australia, Brazil, Sweden, and the USA (New Jersey).
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