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en.wikipedia.org/wiki/Igneous_rock

Igneous rock or magmatic rock, is one of the three main rock types, the others being .... The classification of the many types of different igneous rocks can provide us with important information about the conditions under which they formed.

geology.com/rocks/igneous-rocks.shtml

Photographs and descriptions of intrusive and extrusive igneous rocks with links to detailed articles by Geology.com.

www.thoughtco.com/igneous-rock-types-4122909

Mar 7, 2017 ... Learn more about the major types of igneous rock, which include ... This is just a starting point to explore the different types of igneous rocks.

skywalker.cochise.edu/wellerr/GLG101/GLG101-igneous-rocks.htm

Refer to Igneous Rocks Photos for more visual examples of each of these igneous ... The term porphyry simply refers to the two distinctly different grain sizes ...

www.sciencelearn.org.nz/resources/650-types-of-volcanic-rock

Apr 9, 2010 ... Even igneous rocks that are all formed from magma in the Earth's ... main types of volcanoes, and each has been formed from a different type of ...

www.rocksandminerals4u.com/example_of_igneous_rocks.html

Pumice is full of holes caused by expanding volcanic gases. It is composed of volcanic glass and minerals, and can form in all types of magma: basalt, andesite , ...

www.pitt.edu/~cejones/GeoImages/2IgneousRocks/IgneousCompositions.html

Igneous rocks are classified according to their mineral content: ... Intermediate rocks are roughly even mixtures of felsic minerals (mainly plagioclase) and mafic  ...

www.eartheclipse.com/geology/formation-types-and-examples-of-igneous-rocks.html

Igneous rocks form from the cooling of magma - molten materials in the earth's crust. The terminology Igneous means fire or heat. In this sense, igneous rocks ...

scienceviews.com/geology/igneoustypes.html

Scientists have divided igneous rocks into two broad categories based on where the ... These rock types all have different characteristics, including temperature ...

csmres.jmu.edu/geollab/Fichter/IgnRx/IgAlphabetical.html

Sep 29, 2000 ... If you know the name of a rock and want to learn more about it, clicking on the name will take you to a picture and a description. Names that are ...