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I am teaching a course on nonrenewable resources. I need an updated video of mineral formation - especially for the non-fossil fuel resources - the metals and nonmetals. Thanks Janis Janis D. Treworgy, PhD Professor and Geology Department Chair [log in to unmask] Geology Department 1-618-374-5294 (work) Principia College 1-314-469-3528 (during breaks) 1 Maybeck Place http://www.principia.edu/mammoth Elsah, IL 62028