Classification Of Igneous Rocks Worksheet. Start studying Classification of Igneous Rock. Periodite, dunites, and doirite are examples.
Igneous rock is formed when the Earth's molten layers (magma) cools and forms a hard rock. Igneous rocks are classified on the basis of mineralogy, chemistry, and texture. A plutonic rock may be classified mineralogically based on the actual proportion of the various minerals of which it is composed (called the mode).
Let's first examine the classification of plutonic rocks.
Start studying Classification of Igneous Rock.
Igneous Rocks -. hot rocks/fire rocks. igneous rock. igneous rocks form when molten rock cools and solidifies . molten. We talked about how magma/lava is melted rock. IGNEOUS ROCKS intrusive and extrusive igneous rocks distinguished by the size of the crystal.