The Marilyn and Sturges W. Bailey Distinguished Member Award, is the highest honor of The Clay Minerals Society, based in Virginia, United States. It is awarded solely for scientific eminence in clay mineralogy (in its broadest sense) as evidenced by the publication of outstanding original scientific research and by the impact of this research on the clay sciences. It is endowed by Linda and David Bailey and replaces The Clay Mineral Society's Distinguished Member Award. It is not restricted to members of the CMS.
The award is presented at the CMS annual meeting.