MIGMATITE

 

Migmatite is the result of very high-grade metamorphism & partial melting of gneiss.  Migmatite is a half-metamorphic, half-igneous rock with a half-gneiss & half-granite appearance.  It has both foliated & crystalline textures.  The granite portions of migmatite formed from cooling of partially melted gneiss.

 

Migmatite (8.1 cm across) - the dark-speckled bands have not melted.  The pinkish-orangish-salmon colored bands are granite, formed from cooling of partially melted portions of the original rock.

 


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