The technological development of the last decades allowed great advances in analytical processes, both in variety and speed of results. Sophisticated instruments, highly-developed chemical processes and the use of computers have enabled quantizing elements and isotopes that are concentrated in minerals based on the magmatic processes involved. In 2010, the lead author of this text taught a course at the Geosciences Institute of the University of Sao Paulo on the most recent subjects in petrology, complemented with computer programs for specific applications. The success of that course suggested the need to collect his lecture notes in an organized format, so as to make them available to the scientific community. This text, organized in twenty separate topics, is designed to complement the basic knowledge in the area of petrology.
