\begin{table}%t1
\caption{Electron binding energies for the olivine constituent atoms. The Si~2p band at 101.9~eV is used as a reference position.}
\label{Tab01}
%\centering
\small
\begin{tabular}{cc}
\hline\hline
Olivine constituent atoms & Binding energy (eV) ($\pm$0.2 eV)\\ 
 &  for the experimental samples\\ 
\hline
Si 2p & 101.9\\
Mg 1s & 1304.0\\
Mg 2p & 50.2\\
O 1s & 531.0--531.2\\
Fe$^{3+}$ 2p$_{3/2}$ & 711.6\\
Fe$^{2+}$ 2p$_{3/2}$ & 709.9\\
Fe$^{0}$ 2p$_{{3/2}}$ & 706.3\\
C 1s (contamination) & 285.0\\
\hline
\end{tabular}
\end{table}