Phase Diagrams - Minerals Melt at Different Temperatures - Igneous Petrology

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.

What are phase diagrams?
Why phase diagrams are important?
How to read a phase diagram
Saltwater example
diopside anorthite phase diagram
The eutectic and solidus
Melting an anorthite + diopside rock
Crystallizing an anorthite + diopside mixture
Quartz nepheline phase diagram
Olivine quartz phase diagram
Incongruent melting & the peritectic
melting at the peritectic
Crystallizing a basaltic magma
Albite orthoclase phase diagram
how pressure affects melting and crystallization
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