Igneous Rock Examples Granite

Igneous rock derived from the latin word ignis meaning fire or magmatic rock is one of the three main rock types the others being sedimentary and metamorphic igneous rock is formed through the cooling and solidification of magma or lava the magma can be derived from partial melts of existing rocks in either a planet s mantle or crust typically the melting is caused by one or more of.

Igneous rock examples granite.

Granite definition a coarse grained igneous rock composed chiefly of orthoclase and albite feldspars and of quartz usually with lesser amounts of one or more other minerals as mica hornblende or augite. Granite is used by the public as a catchall name for any light colored coarse grained igneous rock. Examples of intrusive igneous rocks are diabase diorite gabbro granite pegmatite and peridotite. Granite is a type of igneous rock that consists of quartz gray plagioclase feldspar white and alkali feldspar beige plus dark minerals such as biotite and hornblende.

Intrusive igneous rocks are formed when the magma cools off slowly under the earth s crust and hardens into rocks. It is the most common plutonic rock of the earth s crust forming by the cooling of magma silicate melt at depth. Felsic igneous rocks containing a excessive silica content more than 63 sio2 examples granite and rhyolite intermediate igneous rocks containing among fifty two 63 sio2 example andesite and dacite mafic igneous rocks have low silica forty five fifty two and typically high iron magnesium content material example gabbro and. There are two basic types.

Gray or light red. Granite coarse or medium grained intrusive igneous rock that is rich in quartz and feldspar. Intrusive igneous rocks are often coarse grained because. It consists of calcium plagioclase pyroxene olivine hornblende and hypersthene.

What are igneous rocks. Igneous rocks are of two types intrusive plutonic rocks and extrusive volcanic rocks. Coarse grained granite is most similar in mineral composition to fine grained. Learn more about the properties and uses of granite in this article.

Composed of feldspar and quartz. Gabbro and granite are examples of intrusive igneous rocks. Examples of igneous rocks. Igneous rocks are formed from the solidification of molten rock material.

If magma or lava cools quickly the resulting igneous rock will have. Formed by fire examples. It is distinguished from granite because it does not contain quartz. Intrusive igneous rocks crystallize below earth s surface and the slow cooling that occurs there allows large crystals to form.