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Mixed-layer kerolite/stevensite from the Amargosa Desert, Nevada

January 1, 1982

Mixed-layer clays composed of randomly interstratified kerolite/stevensite occur as lake and/or spring deposits of probable Pliocene and Pleistocene age in the Amargosa Desert of southern Nevada, U.S.A. The percentage of expandable layers of these clays, determined from computer-simulated X-ray diffractograms, ranges from almost 0 to about 80%. This range in expandabilities most likely results from differences in solution chemistry and/or temperature at the time of formation. An average structural formula for the purest clay (sample P-7), a clay with about 70% expandable layers, is:


The data suggest that talc, kerolite, and stevensite form a continuous structural series based on layer charge.

Publication Year 1982
Title Mixed-layer kerolite/stevensite from the Amargosa Desert, Nevada
DOI 10.1346/CCMN.1982.0300501
Authors Dennis D. Eberl, Blair F. Jones, Hani N. Khoury
Publication Type Article
Publication Subtype Journal Article
Series Title Clays and Clay Minerals
Index ID 70011847
Record Source USGS Publications Warehouse