Explore the intricacies of phase diagrams in igneous petrology through this comprehensive 25-minute video. Learn how to interpret these essential tools that illustrate the relationship between mineral compositions and temperature in melts. Discover the practical applications of phase diagrams in predicting mineral crystallization from melts and melt formation from mineral melting at specific temperatures. Delve into various examples, including saltwater, diopside-anorthite, quartz-nepheline, and olivine-quartz systems. Understand key concepts such as eutectics, solidus, incongruent melting, and peritectics. Examine the crystallization process of basaltic magma and the effects of pressure on melting and crystallization. Gain valuable insights into igneous rock formation and behavior through this in-depth exploration of phase diagrams in geology.