Hostname: page-component-848d4c4894-pjpqr Total loading time: 0 Render date: 2024-06-23T07:21:41.039Z Has data issue: false hasContentIssue false

X-Ray Studies of the Alteration of Soda Feldspar

Published online by Cambridge University Press:  01 January 2024

G. W. Brindley
Affiliation:
Department of Ceramic Technology, The Pennsylvania State University, University Park, Pennsylvania, USA
E. W. Radoslovich
Affiliation:
Department of Ceramic Technology, The Pennsylvania State University, University Park, Pennsylvania, USA

Abstract

Studies have been made of the alteration of pure albite single crystals and powders. No structural modification of the feldspar itself has been detected. No evidence has been obtained for any preferential orientation of an alteration product in relation to the initial feldspar. Under hydrothermal conditions at 280° C and 430° C., albite flakes and powders have been subjected to attack by 0.1 N HCl for periods ranging from a few hours to 52 days. The flakes changed mainly to boehmite, the powders to a variety of products, including a well-defined kaolinite. This difference of behavior is interpreted in terms of Correns’ ideas on the weathering of silicates.

Type
Article
Copyright
Copyright © The Clay Minerals Society 1955

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

Footnotes

Contribution no. 55–25 from the College of Mineral Industries.

References

Correns, C. W., 1940, Die chemische Verwitterung der Silikate: Die Naturwiss., v. 28, p. 369376.CrossRefGoogle Scholar
Ervin, Guy Jr., and Osborn, E. F., 1951, The system A12O3-H2O: J. Geol., v. 59, p. 381394.Google Scholar
Goodyear, J., and Duffin, W. J., 1954, The identification and determination of plagioclase feldspars by the X-ray powder method: Min. Mag., v. 30, p. 306326.Google Scholar
Gruner, J. W., 1944, The hydrothermal alteration of feldspars in acid solutions between 300° C and 400° C: Econ. Geol., v. 39, p. 578589.CrossRefGoogle Scholar
Morey, G. W., 1955, The action of hot water on some feldspars: Abstracts of papers presented at 36th annual meeting of the Amer. Geophys. Union, p. 15.Google Scholar
Morey, G. W., and Chen, W. T., 1955, The action of hot water on some feldspars: Amer. Min., v. 40, p. 9961000.Google Scholar
Roy, Rustum, and Osborn, E. F., 1952, Studies in the system alumina-silica-water: in Problems of clay and laterite genesis, Am. Inst. Min. Met. Eng., p. 7680.Google Scholar
Schuylenborgh, J. Van, and Sanger, A. M. H., 1950, On the origin of clay minerals in the soil: Landbouwkundig Tijdschrift, v. 62, no. 4/5.Google Scholar
Tuttle, O. F., and Bowen, N. L., 1950, High-temperature albite and contiguous feldspars: J. Geol., v. 58, p. 572583.CrossRefGoogle Scholar