Migmatite is a very high grade metamorphic rock that has been subjected to partial melting. It has both crystalline and foliated texture. The crystalline portions have melted, cooled, and solidified - usually to bands of pinkish-colored granite. The foliated portions resemble gneiss and have not melted. Migmatite is essentially ~half-igneous and ~half-metamorphic.
Locality: loose boulder along the lower stretches of Hellroaring Road (= Forest Service Road 2004), northwestern side of Rock Creek Canyon, southwest of the town of Red Lodge, Beartooth Mountains, Montana, USA
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