Mineralogical Society of America
also containing an educational set of pages about Mineralogy 4 Kids

Ask-A-Mineralogist
is a discussion board moderated by the Mineralogical Society of America and open to the general public. They particularly encourage questions from students, teachers and mineral collectors of any age or expertise

Mineralogy Course Resources on the Internet
a list of mineralogy courses collected by John Butler of Houston University

Welcome to the Science of Mineralogy.
lecture notes provide information about crystal systems, symmetry operations, Miller indices, physical properties of minerals, etc. (Jack Rice, Dartmouth College, University of Washington, Seattle)

Introduction to mineralogy
Interactive lecture notes for the mineralogy (year 2) course at Bristol University, UK.

Testing the Hardness of a Mineral
a short introduction.

Crystallography and Mineral Crystal Systems
an illustrated, nine-part primer on crystallography and mineral crystal systems. (Mike Howard & Darcy Howard, at Bob´s Rock Shop)

Bragg's Law and Diffraction
How waves reveal the atomic structure of crystals. An applet illustrating Bragg's law. (State University of New York at Stony Brook)

Cristallographie
J.J. Rousseau's scientific and crystallographic educational site with Visual Basic and Java applets.

Jeremy´s Mineral Quizzer
an electronic way of testing and improving your working knowledge of mineral names and their formulas. (Jeremy Mates, University of Washington)

Mineral 1.0
an easy-to-use database of common minerals (and photos) with numerous online quizzes covering mineral identification, chemical formulae and hardness

The Isometric Crystal System
a page showing some of the isometric forms. (Molecular Structure Center, Indiana University)

Structures of Simple Inorganic Solids
lectures on solids and sphere packing

Polymorf
on the geometry and symmetry of elements and minerals using Polymorf, a new math and science manipulative. The topological approach is used to characterize the structure of crystals in terms of linked polyhedra. Elements and minerals are classified according to their atomic packing and the percent occupation of interstitial voids.

Mineral Web
a web site for 3-D display of mineral structures

Atlas of Igneous and Metamorphic Rocks, Minerals and Textures
part of the "Virtual Geology" Project at the University of North Carolina.

Notes to accompany course on gems and gem minerals
University of Texas at Austin

The History of Gems, Gemology and Mining Library
A collection of close to 25.000 pages, covering gems, diamonds, mining, gemology and gold rushes on 5 continents

Planete Terre
a course of Earth Sciences including plate tectonics, minerals and rocks, natural resources, geomorphology, Earth and Life history. Free and accessible to a wide audience. IN FRENCH only.

CristaMine (UNED-UPM)
courses on mineralogy, cristallography and gemmology (a project of Universidad Nacional de Educación a Distancia and the Universidad Politécnica de Madrid)

Mexican Mineralogical Society
information about the Mexican Mineralogical Society