mineral
Rhodonite
(Mn,Fe,Mg,Ca)SiO3
Hardness of 5.5-6.5 on the Mohs scale, characterized by its rose-pink to brownish-red color, often with black dendritic veins or patches of manganese oxide. Vitreous to pearly luster. Triclinic crystal system. Perfect cleavage in two directions.
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Physical properties
Hardness of 5.5-6.5 on the Mohs scale, characterized by its rose-pink to brownish-red color, often with black dendritic veins or patches of manganese oxide. Vitreous to pearly luster. Triclinic crystal system. Perfect cleavage in two directions.
Formation & geological history
Forms in metamorphic rocks as a result of contact metamorphism or regional metamorphism of manganese-rich sediments. Also found as a gangue mineral in hydrothermal veins. Often associated with other manganese minerals like rhodochrosite.
Uses & applications
Commonly used as a decorative stone, carved into figurines, beads, and cabochons for jewelry. Its distinct pink and black patterns make it popular among collectors.
Geological facts
The name rhodonite comes from the Greek word 'rhodon', meaning rose. It is the state gem of Massachusetts.
Field identification & locations
Easily identified by its distinctive pink color with black manganese oxide inclusions (often dendritic). Common locations include the Ural Mountains (Russia), Sweden, Australia, Peru, and various localities in the USA.
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Schist
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Potassium Feldspar (Orthoclase)
Orthoclase (KAlSi3O8)
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