mineral
Rhodonite
Manganese Inosilicate (Mn,Fe,Mg,Ca)SiO3
Hardness: 5.5-6.5; Color: Pink, rose-red, or brownish-red with black manganese oxide inclusions; Luster: Vitreous to pearly; Crystal System: Triclinic; Cleavage: Perfect in two directions; Specific Gravity: 3.57-3.76.
- Hardness
- 5
- Luster
- Vitreous to pearly
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Physical properties
Hardness: 5.5-6.5; Color: Pink, rose-red, or brownish-red with black manganese oxide inclusions; Luster: Vitreous to pearly; Crystal System: Triclinic; Cleavage: Perfect in two directions; Specific Gravity: 3.57-3.76.
Formation & geological history
Formed through regional or contact metamorphism of manganese-rich sedimentary rocks, often found in hydrothermal veins and replacement deposits.
Uses & applications
Used primarily as an ornamental stone, lapidary material for carvings and jewelry (beads, cabochons), and occasionally as an ore of manganese.
Geological facts
Rhodonite is the state gemstone of Massachusetts. Its name is derived from the Greek word 'rhodon', meaning rose. The black veins often seen in specimens are manganese oxide dendrites.
Field identification & locations
Identified by its pink base color paired with characteristic black 'veins' or dendritic patterns. Commonly found in Russia (Ural Mountains), Australia, Brazil, Sweden, and Canada.
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