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Geologynet: Rock Forming Minerals
Use the search to find information on rock forming minerals. Characteristics including formula, color, cleavage, and hardness are presented in an easy-to-read chart.
University of Oregon
Ask Geo Man: Igneous Rock Forming Minerals
Ask GeoMan lists Olivine, Pyroxene, Amphibole, Feldspar, Mica and Quartz, as five common rock forming minerals. Characteristics of each are also given.
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...