metamorphic
Unakite
Altered granite (Epidotized granite)
AI-generated identification · may be incorrectHardness of 6-7 on the Mohs scale, mottled pink, green, and white coloration, vitreous to dull luster, and massive crystal habit.
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Physical properties
Hardness of 6-7 on the Mohs scale, mottled pink, green, and white coloration, vitreous to dull luster, and massive crystal habit.
Formation & geological history
Formed through hydrothermal alteration of granite, where plagioclase feldspar is replaced by epidote, typically dating from Precambrian to Paleozoic eras.
Uses & applications
Commonly used for lapidary work, cabochons, carved decorative objects, and crystal healing specimens.
Geological facts
First discovered in the Unaka Mountains of North Carolina, from which it derives its name. It is a composite rock containing pink orthoclase feldspar, green epidote, and colorless quartz.
Field identification & locations
Easily identified by its distinct blotchy pink and green appearance; found worldwide in glacial drift and mountainous terrains.
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