Celadonite and its Transformation to Smectite in an Entisol at Red Rock Canyon, Kern County, California

Autor: D. A. Reid, Robert C. Graham, L. H. Bowen, S. B. Edinger, Jarel O. Ervin
Rok vydání: 1988
Předmět:
Zdroj: Clays and Clay Minerals. 36:425-431
ISSN: 0009-8604
Popis: A green, Lithic Torriorthent soil derived from a celadonite-rich, hydrothermaUy altered basalt immediately north of the Mojave Desert region in southern California was studied to investigate the fate of the celadonite in a pedogenic weathering environment. Celadonite was found to be disseminated in the highly altered rock matrix with cristobalite, chalcedony, and stilbite. X-ray powder diffraction (XRD) showed the soil material to contain celadonite having a d(060) value of 1.510 A, indicative of its di- octahedral nature. Very little smectite was detected in the parent material, whereas Fe-rich smectite was found to be abundant in the soil. The Fe-smectite and celadonite were identified as the sole components of the green-colored clay fraction (
Databáze: OpenAIRE