EPIDOTITE

 

Epidotite is a greenish-colored metamorphic rock dominated by the mineral epidote (Ca2(Al,Fe)3(SiO4)3(OH) - calcium hydroxy-aluminoferrosilicate).  The sample shown below is a banded epidotite from the Ely Greenstone (late Neoarchean, ~2.6 to 2.7 billion years) in the Dunka Mine area, just south of Ely & east of Babbit, northeastern Minnesota, USA.

 

Epidotite

 


 

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