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Mica Leptyls and Wavellite Content of Clay Fraction from Gainesville Loamy Fine Sand of Florida
Author(s) -
Dyal R. S.
Publication year - 1953
Publication title -
soil science society of america journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.836
H-Index - 168
eISSN - 1435-0661
pISSN - 0361-5995
DOI - 10.2136/sssaj1953.03615995001700010014x
Subject(s) - loam , fraction (chemistry) , kaolinite , mica , quartz , mineralogy , geology , clay minerals , soil water , soil science , chemistry , organic chemistry , paleontology
This paper reports the occurrence of mica leptyls as the principal constituent and wavellite a minor constituent of the clay fraction from Gainesville loamy fine sand of Florida. The mineralological compositions of clay fraction from seven soils of the lower Gulf Coastal Plain are compared. Methods used for identification are differential thermal analysis, X‐ray diffraction, surface area measurements, chemical analysis, and observation under the electron microscope. Leptyls of mica comprise 60 to 80% of the mineralogical composition of the clay fraction of Gainesville loamy fine sand. Four to 7% of the clay fraction consists of wavellite. Ten to 15% of the clay fraction is kaolinite with some quartz present in the 2‐ to 0.2‐µ fraction. The clay fraction from the seven soils of the lower Gulf Coastal Plain is predominantly kaolin or kaolingibbsite mixtures.