Uses of Igneous Rock by keypoint Igneous rocks are quarried for road construction They are used for building of houses. They generate revenue as gravel when broken into pieces. They are polished as monuments and graveyard stones. Others are Viewing: Types of Igneous Rock Characteristics of Igneous Rock Locations to Find Igneous rocks in Nigeria Uses of Metamorphic Rocks Types of Rocks Types of Sedimentary Rocks Areas to Find Sedimentary Rocks in Nigeria