File:Mineralogy igneous rocks EN.svg

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Summary

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.

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File history

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current11:44, 6 January 2017Thumbnail for version as of 11:44, 6 January 2017744 × 540 (41 KB)127.0.0.1 (talk)<p>Mineralogical composition of igneous rocks with decreasing silica (SiO<sub>2</sub>) 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. </p>
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