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Mineralogical Magazine; December 2006; v. 70; no. 6; p. 689-695; DOI: 10.1180/0026461067060355
© 2006 Mineralogical Society of Great Britain and Ireland
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Small-angle neutron scattering investigation of the effect of a heat-treatment on the microstructure of porous basalt rocks

A. Kahle1, B. Winkler1,* and A. Radulescu2

1 Universität Frankfurt, Institut für Mineralogie, Abt. Kristallographie, Senckenberganlage 30, 60054 Frankfurt a.M., Germany
2 Institut für Festkörperforschung, Forschungszentrum Jülich, 52425 Jülich, Germany

* E-mail: b.winkler{at}kristall.uni-frankfurt.de

Small-angle neutron scattering has been used to study the microstructure of natural porous basalt rocks. The effect of temperature on the rock microstructure has been investigated on ‘as received’ and heat-treated basalts. The magnitudes of {alpha}, the power-law scattering exponent were between 3 and 4 for the majority of the rocks, indicating a surface fractal structure between the basalt matrix and the pore space. Heat-treated basalts show higher {alpha} values, and therefore a smoother pore surface. Internal surface areas were determined for all basalts depending on the thermal history.

KEYWORDS: neutron scattering, microstructure, heat treatment, porous basalt






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