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The results of isotopic and clumped isotope analysis of all samples and standards are reported in Table 1 and plotted in Figure 5 and 6.  The spatial distribution of isotope values and temperature for DLR7 is plotted in Figure 5(a) and for DLR7i in Figure 5(b). Because the two sections were cut at different locations across the vein we don't expect a direct correlation between the two data sets. There are, however, similarities. DLR7 has a distinct repeating assymetric saw-toothpattern along the growth direction that is most marked for $\delta^{18}$O $\delta^{18}O$  and $T(\Delta_{47})$. There are four sections of the vein separated by the grey bands in Figure 5(a). The bands mark step changes in  $T(\Delta_{47})$ between adjacent samples. Each section is characterised by a rising temperature from a minimum of 40$^{\circ}$ to a maximum of 90$^{\circ}$C. This pattern is mirrored by antithetic changes in $\delta^{18}O$, falling from a maximum value of -8‰ to a minimum of -10‰_{VPDB}. The pattern of change in $\delta^{13}C$ is not so marked or consistent but is still apparent. For example between 10 and 25mm there is a positive covariation of $\delta^{18}O$ and $\delta^{13}C$ with an inverse correlation between 30 and 50mm.  The bulk isotope composition of the vein occupies a restricted range of $\delta^{13}$C and $\delta^{18}$O values, Figure 5(a). $\delta^{13}$C values in particular lie between +1.5 to +3.7‰_{VPDB}. There is a similar restricted range in $\\delta^{18}$O values between -7 and -10‰_{VPDB}. There is a degree of structure beginning to emerge from the plot.