mineral

Rhodonite

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

Hardness: 5.5-6.5 on Mohs scale; Color: Pink to rose-red, often with black dendritic veins of manganese oxide; Luster: Vitreous to pearly; Crystal structure: Triclinic; Cleavage: Perfect in two directions; Specific gravity: 3.57-3.76.

Hardness: 5
Luster: Vitreous to pearly

Identified March 25, 2026More mineral →

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Physical properties

Formation & geological history

Formed through contact metamorphism and hydrothermal processes, often found in manganese ores. It is commonly associated with metamorphic rocks resulting from regional or contact metamorphism of manganese-rich sediments.

Uses & applications

Used primarily as a decorative stone, in jewelry (cabochons and beads), and as an ornamental carving material. Historically used as a minor source of manganese ore.

Geological facts

Rhodonite's name is derived from the Greek word 'rhodon', meaning rose. It is the official state gemstone of Massachusetts and is often confused with Rhodochrosite, though Rhodonite is harder and typically has black inclusions.

Field identification & locations

Identify in the field by its distinct rose-pink color coupled with black manganese oxide veins and its high hardness (it cannot be scratched by a copper coin). Significant deposits are found in Russia, Sweden, Australia, Canada, and the USA.

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