metamorphic
Unakite
Altered Granite (Orthoclase Feldspar, Epidote, and Quartz)
AI-generated identification · may be incorrectHardness of 6-7 on the Mohs scale. Distinctive mottled pink, green, and clear coloring with a vitreous to dull luster.
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Physical properties
Hardness of 6-7 on the Mohs scale. Distinctive mottled pink, green, and clear coloring with a vitreous to dull luster.
Formation & geological history
Formed through the hydrothermal alteration of granite, where plagioclase feldspar is replaced by epidote.
Uses & applications
Used primarily for making tumbled stones, cabochons, beads, and small decorative carvings.
Geological facts
First discovered in the Unaka Mountains of North Carolina, from which it derives its name.
Field identification & locations
Easily identified in the field by its distinct combination of pink orthoclase and green epidote. Commonly found in glacial drift and river gravels.
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