Igneous Rocks

 Igneous rocks are formed by the solidification of magma either underneath the surface or above it. On the basis of the depth of their formation they may be classified into plutonic rocks, hypabyssal rocks and volcanic rocks.

The important features of the igneous rocks are that they are generally hard, massive, compact with interlocking grains. It generally contains more of quartz and feldspar minerals and entire absence of fossils.

Important igneous rocks such as norite, gabbro, charnockite, syenite, hypersthene granite, Peridotite, Pyroxenite, and dolerite are in the display.