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Didn't USGS put out something called, "How Much is it Worth?" I may have a copy on DVD. Regards, Eric Pyle On 4/6/10 10:14 PM, Elizabeth Shadman wrote: > I would love to have something like that as well! > > Elizabeth Nagy-Shadman > > > On 4/6/10 7:45 AM, "Janis Treworgy" <[log in to unmask]> wrote: > > 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 > >