Distribution of Clay Minerals and Ion-Exchange Capacity in Some Sedimentary Materials

Cambridge University Press (CUP) - Tập 2 - Trang 264-276 - 1953
John C. Hathaway1
1U. S. Geological Survey, Washington, USA

Tóm tắt

AbstractThe cation-exchange capacity of the clay fraction was determined in 67 samples of various types of sedimentary materials, and the clay minerals were identified from x-ray diffractometer patterns of oriented aggregates. The probable quantitative clay mineral composition was established for each sample assuming a comparable degree of crystallinity for the clay minerals in the sample. Agreement was poor between the ion-exchange capacities determined and those predicted from the clay mineral composition. The results suggest that the figure obtained for the ion-exchange capacity of a sample of sedimentary material may be misleading as a guide to the types of clay minerals present.The residual soils among the sedimentary materials examined had clay fractions with greater variation in ion-exchange capacity than did unconsolidated sediments generally of alluvial origin.

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Tài liệu tham khảo

10.1021/ac50147a012

Brown, 1951, X-ray identification and crystal structures of clay minerals, 155

Kelley, 1948, Cation exchange in soils, 1

Grim, 1953, Clay mineralogy, 1

Ross, 1945, Minerals of the montmorillonite group, 23

Brindley, 1951, X-ray identification and crystal structures of clay minerals, 32

Kerr, P. F. et al. (1950) Analytical data on reference clay minerals: American Petroleum Institute Project 49, Columbia University, New York.

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10.1086/625050

10.1002/jctb.5000651005

Earley, 1953, Purification and properties of montmorillonite, Am. Mineralogist, 38, 707

Brindley, 1951, X-ray identification and crystal structures of clay minerals, 173

10.1021/ac60071a021

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Thông tin xuất bản

Cambridge University Press (CUP)

Tập 2

264-276

Thông tin tác giả