Chemical Weathering of Feldspar to Clay
http://www.classzone.com/books/earth_science/terc/content/visualizations/es1202/es1202page01.cfm?chapter_no=visualization

Center for Earth and Space Science Education at TERC Jennifer Loomis


This site features a short animation that shows the evolution of an unaltered feldspar crystal to a clay as a result of progressive chemical weathering. The animation can be paused and rewound to emphasize important points associated with the content. As the clip rolls, captions explain what viewers are observing.

This resource is referenced here:
Subject: Geoscience:Geology:Sedimentary Geology:Weathering, Geoscience:Geology:Mineralogy