mineral

Rhodonite

Rhodonite (Manganese Silicate), (Mn,Fe,Mg,Ca)SiO3

Hardness: 5.5-6.5 on Mohs scale; Color: Pink, rose-red, or brownish-red, often 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

Identified April 4, 2026More mineral →

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Physical properties

Formation & geological history

Produced in metamorphic rocks associated with manganese ore. It forms via regional metamorphism or hydrothermal replacement of manganese-rich sediments. It can be found in rocks from several hundred million to over a billion years old.

Uses & applications

Primarily used as an ornamental stone, for lapidary work (cabochons, beads), small sculptures, and occasionally as a minor ore of manganese. It is highly valued by gemstone and mineral collectors.

Geological facts

The name comes from the Greek word 'rhodos', meaning rose. It is often confused with rhodochrosite, but rhodonite is much harder and typically contains black dendrites or veins of manganese oxide, whereas rhodochrosite has white calcium carbonate banding.

Field identification & locations

Identify in the field by its distinct pink-to-red color interrupted by black veins or patches. It is commonly found in Argentina, Australia, Brazil, Russia (Ural Mountains), and the USA (New Jersey, Massachusetts).

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