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What is the classification of igneous rocks based on?

Question:

What is the classification of igneous rocks based on?

Igneous Rocks:

All rocks can be classified as either igneous, sedimentary, or metamorphic, depending on how they were formed. Igneous rocks are those that cooled directly from lava or magma.

Answer and Explanation:

Igneous rocks are classified according to two criteria: composition and texture.

Let's break that down. When talking about the composition of igneous...

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Classification of Igneous Rocks: Textures and Composition

from Earth Science 101: Earth Science

Chapter 7 / Lesson 4
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