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Clay Mineralogy of a Sassafras Soil in New Jersey¹

ABSTRACT

The clay mineralogy of a Sassafras soil was studied. Illite was found to be the dominant clay mineral in the C horizon, and aluminum-interlayered vermiculite was the dominant clay mineral in the A1 horizon. The weathering series: Illite expanding-vermiculite vermiculite aluminum-interlayered vermiculite accounted for the major clay mineral alterations in this soil. The distribution of kaolinite suggested that kaolinite is being formed in the soil. Lepidocrocite was found in horizons containing large amounts of easily reducible iron.

¹ Paper of the Journal Series, New Jersey Agr. Exp. Sta., Rutgers—The State University of New Jersey, New Brunswick, N. J.

² Assistant Professor of Soil Mineralogy, Department of Soils and Crops.

Received for publication April 24, 1964. Accepted for publication January 5, 1965.