Industrial Minerals

Indianite: Hoosier rock with a past
Legendary ore deposits of Indiana
Lightweight aggregate
Marl
Natural molding sand: Historic Hoosier mineral resource
The New Albany shale: Source of fuel for the future?
Peat moss from the Ice Age lakes and swamps
Sand and gravel: Gift of the Ice Age glaciers
Underclay: A once-important Hoosier mineral resource


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