What chemical property is most commonly used to classify igneous rocks?

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Chemistry

Adriana

9 May, 16:41

What chemical property is most commonly used to classify igneous rocks?

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Aylin Yoder · Answer 1

Actually Igneous rocks are classified either based on grain size or based on mineralogy. However grain size is clearly not a chemical property. So we can say that they are classified chemically based on mineralogy or the abundance of quartz or silica present.