This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Streckeisen for volcanic igneous rocks fr.svg en Simplified Streckeisen classification of volcanic igneous rocks Used by IUGS fr Classification Streckeisen simplifie des roches magmatiques volcaniques Normalisation de l'IUGS Own work Inkscape br An introduction to igneous and metamorphic petrology Winter Prentice Hall lments de