Objectives for the topic: Systematic Mineralogy-Framework Silicates

Reading: See syllabus

Images to understand: See syllabus

After completing this topic, the student will be able to:

1. Identify the tetrahedral-cation-to-oxygen ratio.
2. Identify the stable SiO₂ minerals at various P&T (fill in names on a phase diagram).
3. Name the varieties of plagioclase at different compositions between albite and anorthite.
4. Link various plagioclase varieties to various igneous rocks (a la Bowen).
5. Name the varieties of K-feldspar, and identify differences between them.
6. Explain how perthite forms.