**Table 2:** Influence of the sticking coefficients. For reaction index r see Table 1.
Index r		#0¹	#1	#2	#3²
1, 2, 3³	$\alpha^{\rm TiO_2}_{1,2,3}$	1	1	1	1
4	$\alpha^{\rm SiO_2}_4$	1	0.1	0.1	1
5	$\alpha^{\rm SiO_2}_5$	1	0.1	0.01	0.01
6 ³	$\alpha^{\rm SiO_2}_6$	1	0.1	0.1	1
7, 8, 9	$\alpha^{\rm Fe}_{7,8,9}$	1	1	1	1
10, 11, 12	$\alpha^{\rm Mg_2SiO_4}_{10\ldots 12}$	1	0.1	0.1	0.04
13 $~\ldots~$ 17 ³	$\alpha^{\rm Al_2O_3}_{13\ldots 17}$	1	1	1	1
		[dark	[light	[orange]	[red]
		blue]	blue]

¹ Resembles Sect. 4. ² The most extreme values given in Hashimoto (1990). ³ No measurements in the literature. We assume $\alpha =1$ for TiO₂[s], Al₂O₃[s] and $\alpha^{\rm SiO_2}_4=\alpha^{\rm SiO_2}_6$ .

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