mineral
Polished rhodonite
Rhodonite, (Mn,Fe,Mg,Ca)SiO₃
AI-generated identification · may be incorrectOpaque pink to raspberry-red stone with irregular black manganese-oxide patches; vitreous to dull luster and typically massive rather than visibly crystalline. Mohs hardness is about 5.5–6.5; the pictured piece appears tumbled and polished.
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Physical properties
Opaque pink to raspberry-red stone with irregular black manganese-oxide patches; vitreous to dull luster and typically massive rather than visibly crystalline. Mohs hardness is about 5.5–6.5; the pictured piece appears tumbled and polished.
Formation & geological history
Rhodonite forms in manganese-rich metamorphic deposits and hydrothermal veins, often with other manganese minerals. Its age depends on the host deposit; a specimen’s age cannot be determined from the image.
Uses & applications
Used as a decorative stone for cabochons, beads, carvings, and collectibles; historically, some material has been used ornamentally in architecture.
Geological facts
The dark veining or patches are commonly manganese oxides, especially pyrolusite, contrasting with the pink rhodonite.
Field identification & locations
The pink-and-black pattern and opaque, polished surface are characteristic, though similar stones can be confused with rhodochrosite or dyed materials. Notable deposits occur in Australia, Sweden, Russia, and the United States.
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