Igneous rocks are usually classified first by their color index. The color index is separated into four categories. Felsic rocks are the lightest and are composed of mostly quartz and potassium feldspar. Intermediate rocks are the second lightest and are made up of mostly plagioclase feldspar, pyroxene, amphibole, and biotite. Mafic rocks are made up of plagioclase feldspar, pyroxene, and amphibole. Ultramafic is made up of mostly olivine, with pyroxene and amphibole.
An intrusive igneous rock.
igneous rock
Igneous rock. Extrusive igneous rock forms at or near the surface, intrusive igneous rock forms below the surface.
The melting of metamorphic or igneous rock forms magma.
Yes, granite is an example of an igneous rock.
other kinds of rocks are sedimentary rock or igneous rock
There are three broad categories of rock (Igneous, Metamorphic and Sedimentary) but these are themselves further subdivided into a large number of differing rocks.
Sedimentary, Igneous and Metamorphic.
Igneous rock is found in volcanoes.
Igneous rock can be found.
organic
There are three kinds of rock in the world: igneous, metamorphic and sedimentary.
Extrusive-formed on surfaceIntrusive-formed underground
There are three types of Rocks, Igneous, Metamorphic, and Sedimentary.
Igneous,sedimentry and metamorphic
They are: Sedimentary rocks metamorphic rocks igneous rocks
All rock types, igneous, sedimentary, and even metamorphic can be altered to new metamorphic rock.