Robert R. Mumm
Geologic Samples LibraryIndustrial Minerals and Resource Economics Section
Earth Resources Center
Phone: 217-333-3567
E-mail:
mumm@isgs.illinois.edu
Updated 8/26/2009 SLD
Phone: 217-333-3567
E-mail:
mumm@isgs.illinois.edu
Updated 8/26/2009 SLD