Rock Identifier
Unakite (Altered Granite (Epidote, Orthoclase Feldspar, and Quartz)) — metamorphic
metamorphic

Unakite

Altered Granite (Epidote, Orthoclase Feldspar, and Quartz)

AI-generated identification · may be incorrect

Hardness of 6-7 on the Mohs scale, distinct pink and green coloration, vitreous to dull luster, and granular crystal structure.

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Physical properties

Hardness of 6-7 on the Mohs scale, distinct pink and green coloration, vitreous to dull luster, and granular crystal structure.

Formation & geological history

Formed by the hydrothermal alteration of granitic rocks, where plagioclase feldspar is replaced by epidote.

Uses & applications

Used primarily for making tumbled stones, cabochons, carved decorative objects, and jewelry.

Geological facts

First discovered in the Unakas Mountains of North Carolina, from which it derives its name.

Field identification & locations

Easily identified by its mottled pink and green appearance; commonly found in glacial drift derived from the Blue Ridge Mountains.