Massachusetts Institute of Technology
Mit: Open Course Ware: Structure of Earth Materials
A college course featuring mineral image galleries, labs, and instructor's notes on the topics of crystalline structure, crystal chemistry, and bonding in rock-forming minerals.
Missouri State University
Missouri State University: Atomic Structure of Minerals
This site shows the atomic structure of common minerals. It includes information on Paulings Rule and Ionic Substitution.
Australian Museum
Australian Museum: Concretions, Thunder Eggs and Geodes
Ever break open a geode and see the beauty inside? Learn how those crystals formed, as well as the mineral formations in thunder eggs and concretions.
Amethyst Galleries
Amethyst Galleries: Minerals by Name
Use this resource to look up any mineral by name to see its picture along with history, class, uses, related minerals, and physical properties. Just choose from this alphabetically sorted list of minerals.