Item 1.01 Entry into a Material Definitive Agreement.

On September 18, 2009, AMCOL International Corporation (the "Company") and certain of its wholly-owned subsidiaries entered into the Fourth Amendment to Credit Agreement with Harris N.A., Wells Fargo Bank, N.A., Bank of America, N.A., The Northern Trust Company, RBS Citizens, N.A. and HSBC Bank USA, N.A. (the "Fourth Amendment"). The Fourth Amendment amends the Credit Agreement dated November 10, 2005, and amended June 14, 2006, March 8, 2007 and May 20, 2008, among the parties (the "Credit Agreement").

The Fourth Amendment contains certain modifications with respect to, among other matters, various definitions and covenants, as described in Exhibit 10.1.

The foregoing description of the Fourth Amendment is qualified in its entirety by reference to the Fourth Amendment, which is filed as Exhibit 10.1 to this Current Report on Form 8-K and incorporated herein by reference.

Item 9.01 Financial Statements and Exhibits.

(d) Exhibits. 10.1 Fourth Amendment to Credit Agreement dated as of September 18, 2009 among AMCOL International Corporation and certain of its wholly-owned subsidiaries and Harris N.A. and certain other lenders.

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