The Mineralogy division includes instructional and reference material on minerals and their structures.

The Instructional section is composed of two subdivisions.

• Crystal Structure Animations
  Short Quicktime movies that show the unit cell of key mineralogical structures in various orientations.

• Ionic Compounds: Composition and Bonding, Structure and Crystal Symmetry (textbook)

Crystal Habits links to Claude Yoder's personal collection of minerals.

The Links section is geared towards the mineral collector and contains numberous links to various mineral shops.