Clay Minerals (IMAGE) American Chemical Society Caption Minerals from clay could provide a source of powerful antimicrobials for fighting deadly MRSA infections and other diseases. Credit Photo credit: Arizona State University, John C. Phillips. Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.