mineral

Rhodonite

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

Hardness: 5.5-6.5 on Mohs scale; Color: Rose-pink to brownish red with black dendritic inclusions; Luster: Vitreous to pearly; Crystal structure: Triclinic; Cleavage: Perfect; Specific gravity: 3.5-3.7

Hardness: 5
Color: Rose-pink to brownish red with black dendritic inclusions
Luster: Vitreous to pearly

Identified July 3, 2026More mineral →

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Physical properties

Formation & geological history

Forms in hydrothermal metamorphic environments, typically found in manganese-rich metamorphic rocks or ore deposits. It occurs as a primary mineral in localized contact metamorphic zones.

Uses & applications

Used primarily as an ornamental stone, for lapidary work, carvings, cabochons for jewelry, and occasionally as a minor ore of manganese.

Geological facts

The name is derived from the Greek word 'rhodon', meaning rose. It is the state gemstone of Massachusetts, USA. The black veins are caused by manganese oxide oxidation.

Field identification & locations

Identified by its distinctive 'flesh-pink' color contrasted with black manganese oxide veins (unlike Rhodochrosite which lacks the black veins). Common sources include Russia, Australia, Canada, Brazil, and the USA.