metamorphic
Unakite
Altered Granite (Granitic Metamorphic Rock)
AI-generated identification · may be incorrectHardness of 6-7 on the Mohs scale, characterized by distinct patches of pink orthoclase feldspar, green epidote, and clear quartz with a vitreous to dull luster.
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Physical properties
Hardness of 6-7 on the Mohs scale, characterized by distinct patches of pink orthoclase feldspar, green epidote, and clear quartz with a vitreous to dull luster.
Formation & geological history
Formed through the hydrothermal alteration or epidotization of granite, where hot fluids alter original plagioclase feldspar into epidote.
Uses & applications
Commonly used for lapidary work, carved into cabochons, beads, small decorative objects, and polished spheres.
Geological facts
First discovered in the Unaka Mountains of North Carolina, from which it derives its name.
Field identification & locations
Easily identified visually by its mottled pink and green coloration; found globally including in the US, South Africa, and Brazil.
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