Geo Links
Ray Rector's World of Geology
this is a monster site with some great links
Olympus Microscopy Polarized Image Gallery
a great collection of polarized slides
John Turbeville's Site
cool virtual labs
Atlas of Rocks, Minerals, & Textures
a collection of polarized slides
Dynamics of the Earth Lab
a Geology 100 course
Geologylink Glossary
Kato's Mineral Fossil Collection
some great mineral pics