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  • 1 Institute of Geotechnics of the Slovak Academy of Sciences 043 53 Kosice Slovakia
  • | 2 P. J. Sáfarik University Department of Physical and Analytical Chemistry 041 67 Kosice Slovakia
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The changes in specific surface area and structure disorder of mechanically activated arsenopyrite were investigated. The rate of nonoxidative decomposition of mechanically activated arsenopyrite was increased almost 10-times when compared with nonoxidative decomposition of a non-activated sample. An empirical linear relationship was found (r=0.996) between the rate constant of decomposition and the ratio of specific surface to transmission of the absorption band of arsenopyrite at
\documentclass{aastex} \usepackage{amsbsy} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{bm} \usepackage{mathrsfs} \usepackage{pifont} \usepackage{stmaryrd} \usepackage{textcomp} \usepackage{upgreek} \usepackage{portland,xspace} \usepackage{amsmath,amsxtra} \pagestyle{empty} \DeclareMathSizes{10}{9}{7}{6} \begin{document} $$\bar \nu = 370 cm^{ - 1}$$ \end{document}
. This relationship enables us to arrange the reaction 4FeAsS→4FeS+As4 among structure-sensitive reactions.