IGNEOUS ROCK Definition & Meaning -

igneous rock  Characteristics of igneous rocks · They are generally hard rocks and water permeate with great difficulty along the joints · They are granular Igneous rocks are formed from the solidification of molten rock material There are two basic types: 1) intrusive igneous rocks such as diorite, gabbro,

as accessory minerals mica hornblende accessory mineral mineral found in a rock in tiny quantities 19 20 Color Igneous rocks come in many colors A  The texture of igneous rocks will depend greatly on the rate at which they cool Intrusive igneous rocks are formed when magma cools slowly inside Earth's

Igneous rocks occur as fragmental and coherent units of varied form Disruption of liquid rock near and at the surface by the explosive expansion of dissolved An ultramafic, coarse-grained igneous rock Peridotite will form under Earth's surface from slowly-cooling magma It is less rare than Komatiite,