Amethyst Galleries
Amethyst Galleries: Mineral Gallery: The Mica Group
The mineral mica is actually a group of over thirty minerals from the subgroup Silicates. This website lists each one and provides detailed information on the most common mica minerals.
James Madison University
James Madison U.: Bowen's Reaction Series & Igneous Rock Forming Minerals
If you're interested in learning about the igneous rock-forming minerals in seeing multiple pictures of each sample, then this is your site. It also includes the chain that these minerals follow. Click on the PDF link for a printable...
Other
Chemeketa Community College: Igneous Rock Identification
This resource contains detailed summaries of eight different igneous minerals. It also has enlarged pictures of the minerals as they appear embedded in igneous rock.
American Museum of Natural History
American Museum of Natural History: O Logy: Stuff to Do: Grow Rock Candy
Learn about the crystal patterns and shapes of select minerals (diamond, quartz, muscovite, and topaz) and how to grow your own rock candy crystals.