\begin{table}%t2
\caption{Coefficients required for calculating evaporation and condensation
rates. Data for $\rho$ and $A$ from the CRC-handbook (Lide \cite{Lid95}). For~$V_0$ and~$\alpha$ see text.}\label{TabMatPro}
%\centering
\par
\begin{tabular}{lcrll}
\hline
\hline
Dust & $\rho$ & \multicolumn{1}{c}{$A$} & 
\multicolumn{1}{c}{$V_0$} & $\alpha$ \\
species & g~cm$^{-3}$ & & \multicolumn{1}{c}{cm$^3$} & \\
\hline
quartz     & 2.65 & 60.085  & $3.80\times10^{-23}$ & 0.05\\
iron       & 7.87 & 55.845  & $1.19\times10^{-23}$ & 0.9 \\
forsterite & 3.21 & 140.694 & $7.33\times10^{-23}$ & 0.1 \\
fayalite   & 4.30 & 203.774 \\
enstatite  & 3.19 & 100.389 & $5.26\times10^{-23}$ & 0.1 \\
ferrosilite& 4.00 & 131.93  \\
olivine    &      &         & $7.55\times10^{-23}$ & 0.1 \\
pyroxene   &      &         & $5.35\times10^{-23}$ & 0.1 \\
\hline
\end{tabular}
\end{table}