Compatibility Diagram 1: Dsp-Py-Qz-Ka-H2O
Summary
One of three compatibility diagrams I use in class. This is a short activity to introduce students to compatibility diagrams (triangular diagrams showing stable assemblages) and how tie lines change when a reaction line is crossed. This exercise can, in turn, be followed by Compatibility Diagram 2 and Diagram 3.
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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 check understanding just after introducing the idea of compatibility diagrams.
Goals
Content/concepts goals for this activity
Students learn how to draw appropriate compatibility diagrams.
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
Teaching materials and tips
- Compatibility Diagram 1 Activity Description/Assignment (Acrobat (PDF) 60kB Nov9 09)
- Compatibility Diagram 1 Answers (Acrobat (PDF) 15kB Nov9 09)
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