metamorphic
Unakite
Altered granite (Epidotized granite)
Mohs hardness of 6 to 7; mottled green, pink, and white colors; vitreous to dull luster; massive crystal habit with no distinct cleavage; specific gravity of 2.8 to 3.0
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Physical properties
Mohs hardness of 6 to 7; mottled green, pink, and white colors; vitreous to dull luster; massive crystal habit with no distinct cleavage; specific gravity of 2.8 to 3.0
Formation & geological history
Formed through the hydrothermal alteration of granitic rocks, where plagioclase feldspar is replaced by epidote, commonly found in mountainous regions and glacial drift
Uses & applications
Used primarily in lapidary arts, tumbled stones, cabochons, carved decorative items, and jewelry making
Geological facts
Unakite was first discovered in the Unaka Mountains of North Carolina, from which it derives its name; the pink areas are orthoclase feldspar, the green is epidote, and the clear/white portions are usually quartz
Field identification & locations
Easily identified by its distinct mottled pink and green coloration; commonly found in the Blue Ridge Mountains of the USA, as well as South Africa, Brazil, and China
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