Ternary Diagram Igneous Rocks. See a worked example from the zro 2 sio 2 al 2 o 3 system. Igneous afm diagram is demonstrated but the ternary components can be readily modified to accommodate any ternary components.
Submitted by nicholas hamilton school of materials science and engineering univesity of new south wales sydney australia. If they erupt from volcanoes onto the surface as lava they are called extrusive rocks by contrast intrusive rocks are formed from magma that cools underground. Ess 210 lab 6.
In plutonic rocks all of the minerals are crystallized into visible grains.
But more on that below. If they erupt from volcanoes onto the surface as lava they are called extrusive rocks by contrast intrusive rocks are formed from magma that cools underground. Each of the three corners represents a particular component mineral for example a quartz b plagioclase feldspar and c potassium feldspar. Qapf diagram for plutonic rocks formed in the crust and tas diagram for volcanic rocks.
