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File:Mineralogy igneous rocks EN.svg


Description Mineralogical composition of igneous rocks with decreasing silica (SiO2) content. The rock names for volcanic/extrusive and plutonic/intrusive rocks are written above. Notice that this is a rough way to determine a rock name: the exact difference between the given igneous rocks does not only depend on silica content.
Date March 2009
Source Own work
Author Woudloper


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