Crossref journal-article
Cambridge University Press (CUP)
Clays and Clay Minerals (56)
Abstract

AbstractHisingerite occurs as a weathering product of iron-rich saponite in rhyolitic tuff of Oya, Tochigi Prefecture. The chemical composition: SiO2, 40·68%; Al2O3, 4·44%; Fe2O3, 28·54%; MgO, 1·85%; CaO, 1·42%; Na2O, 1·50%; K2O, 0·33%; H2O+, 6·43%; H2O−, 13·70%; total 98·89%. Very broad and weak X-ray powder reflections occur at 16, 4·5, 2·5, 1·7 and 1·5 Å, which correspond to the main peaks of nontronite. It is considered that trioctahedral iron-rich saponite was altered to hisingerite, a very poorly crystalline form of nontronite, by oxidation of iron and advanced leaching of octahedral Mg ions.

Bibliography

Kohyama, N., & Sudo, T. (1975). Hisingerite Occurring as a Weathering Product of Iron-Rich Saponite. Clays and Clay Minerals, 23(3), 215–218.

Authors 2
  1. Norihiko Kohyama (first)
  2. Toshio Sudo (additional)
References 8 Referenced 36
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Dates
Type When
Created 18 years, 11 months ago (Sept. 12, 2006, 2:25 a.m.)
Deposited 1 month ago (July 29, 2025, 2:29 a.m.)
Indexed 4 weeks, 1 day ago (Aug. 2, 2025, 3:08 p.m.)
Issued 50 years, 2 months ago (June 1, 1975)
Published 50 years, 2 months ago (June 1, 1975)
Published Online 1 year, 1 month ago (July 1, 2024)
Published Print 50 years, 2 months ago (June 1, 1975)
Funders 0

None

@article{Kohyama_1975, title={Hisingerite Occurring as a Weathering Product of Iron-Rich Saponite}, volume={23}, ISSN={1552-8367}, url={http://dx.doi.org/10.1346/ccmn.1975.0230309}, DOI={10.1346/ccmn.1975.0230309}, number={3}, journal={Clays and Clay Minerals}, publisher={Cambridge University Press (CUP)}, author={Kohyama, Norihiko and Sudo, Toshio}, year={1975}, month=jun, pages={215–218} }