mineral
Rhodonite
Rhodonite (Mn,Fe,Mg,Ca)SiO3
Hardness: 5.5-6.5 Mohs; Color: Rose-pink to brownish-red with black manganese oxide inclusions; Luster: Vitreous to pearly; Crystal structure: Triclinic; Cleavage: Perfect; Specific gravity: 3.5-3.7
- Hardness
- 5
- Luster
- Vitreous to pearly
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Physical properties
Hardness: 5.5-6.5 Mohs; Color: Rose-pink to brownish-red with black manganese oxide inclusions; Luster: Vitreous to pearly; Crystal structure: Triclinic; Cleavage: Perfect; Specific gravity: 3.5-3.7
Formation & geological history
Forms in manganese-rich metamorphic rocks, hydrothermal veins, and contact metamorphic deposits. Occurs often as a result of regional or contact metamorphism of manganese carbonates or silicates.
Uses & applications
Commonly used as a gemstone for beads, cabochons, and ornamental carvings. Historically an ore of manganese.
Geological facts
The name comes from the Greek word 'rhodos', meaning rose. It was once believed to help foster brotherly love and was used to make sarcophagi for Russian Czars.
Field identification & locations
Identify in the field by its distinct pink color often paired with black 'dendritic' or veined manganese oxide inclusions. Found in Australia, Brazil, Russia, Sweden, and the USA (Massachusetts).
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Metamorphic
Epidote
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Gypsum (variety Selenite or Alabaster)
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Mineral
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Mineral/Rock