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Keywords from Image Description:
Streckeisen for intrusive quartz igneous rocks fr.svg en Streckeisen classification of intrusive phaneritic igneous rocks Quartz field Used by IUGS fr Classification Streckeisen des roches magmatiques plutoniques champs des roches quartzeuses Normalisation de l'IUGS Own work Inkscape br An introduction to igneous and metamorphic