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Phase Diagrams - Minerals Melt at Different Temperatures - Igneous Petrology

GEO GIRL via YouTube

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Overview

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This course explains how to read and apply phase diagrams in igneous petrology. It uses mineral systems such as diopside–anorthite, quartz–nepheline, olivine–quartz, and albite–orthoclase to examine melting, crystallization, magma composition, and rock textures.

Syllabus

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
upcoming videos!

Taught by

GEO GIRL

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