 | Geokem - Online publication with brief descriptions of most types of terrestrial and lunar igneous rocks, their regional distribution and classification, and examples of their geochemical trends and "fingerprints".
| Granite: Monarch of the Continental Crust - Information on granite and its forms, and an exploration of the granite origin controversy written with a minimum of technical jargon.
| Greg Finn, Brock University - Page with links to course summaries for Petrology and Petrography, and related coursework.
| MELTS Home Page - Melts is a software package for modeling crystallization of magmatic systems.
| Northwest Obsidian Research Lab - Offers a variety of analytical services related to obsidian trace element characterization ("sourcing") studies, obsidian hydration studies, and obsidian source studies, primarily in the context of archaeological research.
| Pegmatite International - Information on the mineralogy and petrology of pegmatites including an online publication and links to pegmatite-related sites.
| Rob's Granite Page - This site is devoted to granite petrology with an emphasis on the Llano Uplift granites of central Texas. Also includes links to research, meetings and other scientists.
| Silica-rich Volcanics of the Berkeley Hills, California - Describes the geology, petrology and geochemistry of the Northbrae and Leona Rhyolites in the East Bay Hills, San Francisco Bay Area, California.
| UBC Geology 202 - Igneous Home Page - Introduction to igneous petrology.
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