Compatibility Diagram 3: Fo-Tc-Etc

Dexter Perkins
,
University of North Dakota
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Summary

One of three compatibility diagrams I use in class. This is a bit more complicated than #1 and #2. It involves a projection from H2O and non-standard corners on the composition triangle.

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Context

Audience

Required Petrology class -- mostly junior level students

Skills and concepts that students must have mastered

Students need to be familiar with mineral reactions and their implications.

How the activity is situated in the course

This activity can be used to get students to think about compatibility diagrams in non-standard ways.

Goals

Content/concepts goals for this activity

Students learn how to draw a complex diagram that involves projections and non-standard components.

Higher order thinking skills goals for this activity


Other skills goals for this activity


Description of the activity/assignment

A 1-page in-class exercise on compatibility diagrams.

Determining whether students have met the goals


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