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Igneous petrology EOSC 321 Laboratory 2: Mafic and intermediate ...

Igneous petrology EOSC 321 Laboratory 2: Mafic and intermediate ...

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pyroxene, hornblende, <strong>and</strong> biotite. A little quartz, K-feldspar <strong>and</strong> olivine may be present.<br />

Diorite is a coarse-grained equivalent of <strong>and</strong>esite.<br />

Lab2-2011.doc <strong>Igneous</strong> Petrology <strong>EOSC</strong> <strong>321</strong> Lab<br />

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