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Bilingual glossary of geology


Intermediate  Intermédiaire
A term qualifying the composition of igneous rocks, minerals, or magmas. Intermediate refers to composition which is midway between mafic and felsic; neither as rich in silica as felsic rocks/minerals/magmas, nor as rich in iron and magnesium as mafic rocks/minerals/magmas.

Themes:
  Igneous rocks

Related words:
  Felsic
  Mafic
  Ultramafic