The texture of intergrown feldspar and quartz granite known as "graphic granite" has often been compared to cuneiform writing. (Image courtesy of MIT OCW.)
This undergraduate petrology course surveys the distribution, chemical composition, and mineral associations in rocks of the earth's crust and upper mantle, and establishes its relation to tectonic environment. The emphasis of the course is on the use of chemistry and physics to interpret rock forming processes.
Special software is required to use some of the files in this course: .xls.