migmatite
nounUK /ˈmɪɡmətʌɪt/
Etymology From Swedish migmatit, from Ancient Greek μίγμα (mígma, “mixture”) + Swedish -it (“-ite”).
1
Geography, Geology, Natural sciences Any rock of mixed appearance, being an intimate mixture of granite and older rock, specifically from intense metamorphism which partially melts the rock, causing it to recrystallize in a state intermediate between igneous and metamorphic.
- More specifically, many of these rocks are described as migmatites, in which the pink veins seem to blend insensibly into a kind of swirling granite.2004, Richard Fortey, The Earth, Folio Society, published 2011, page 163:
- Derived terms
- migmatitic