Titanium-in-quartz thermobarometry has significant potential as a tool for constraining pressure and temperature of deformation independently of major-element exchange thermobarometers. I published the first investigation of the applicability of this tool in greenschist-facies rocks. Several previous studies had shown that Ti concentrations in quartz correlate with cathodoluminescence (CL), particularly at blue wavelengths. Potentially this means that CL maps like the one pictured above can be used to readily obtain invaluable spatial information regarding Ti distributions. At low Ti concentrations however, I found that Ti does not correlate with blue CL. We are currently working with hyperspectral CL images to better understand blue CL signals in quartz with low Ti concentrations.