metamorphic
Unakite
Altered Granite
AI-generated identification · may be incorrectHardness of 6-7 on Mohs scale; distinctive pink orthoclase feldspar, green epidote, and clear quartz mottling; vitreous luster.
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Physical properties
Hardness of 6-7 on Mohs scale; distinctive pink orthoclase feldspar, green epidote, and clear quartz mottling; vitreous luster.
Formation & geological history
Formed through hydrothermal alteration and metasomatism of granitic rocks, often dating to Precambrian times.
Uses & applications
Used primarily for ornamental carvings, tumbled stones, spheres, and jewelry making.
Geological facts
First discovered in the Unaka Mountains of North Carolina, from which it derives its name.
Field identification & locations
Easily identified by its unique mottled pink and green coloration; commonly found in glacial drift and stream beds.
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