noun an alteration in a mineral or rock mass when involving a chemical change of the substance, as of chrysolite to serpentine;
opposed to ordinary metamorphism, as implying simply a recrystallization.
noun an alteration in a mineral or rock mass when involving a chemical change of the substance, as of chrysolite to serpentine;
opposed to ordinary metamorphism, as implying simply a recrystallization.
Webster English vocab. Английский словарь Webster. 2012