Clay Mineral Formation in Mud Pots, Yellowstone Park, Wyoming

John B. Droste
Department of Geology, Indiana University, Bloomington, Indiana

Abstract: Kaolinitic, montmorillonitic, illitic, and mixed-layer clay minerals are found in mud springs and mud pots of Yellowstone Park. A sequence of alteration is proposed as Phase I, alteration of bedrock and sediments by hot spring waters to produce three-layer clay minerals (including mixed layer species) and kaolinite-group minerals; Phase II, further alteration to produce a mud composed predominantly of kaolinite and some form of silica.

Clays and Clay Minerals; 1967 v. 15; no. 1; p. 409-422; DOI: 10.1346/CCMN.1967.0150141
© 1967, The Clay Minerals Society
Clay Minerals Society (www.clays.org)