Figure 2
From: 3D X-ray tomographic analysis reveals how coesite is preserved in Muong Nong-type tektites

Fourier-transform infrared spectroscopy (FTIR) transect obtained on a 285 µm slab of MP26 showing the intensity of H2O absorbance in the different bands. The error bars indicate the uncertainty in the H2O measurement in each point of the transect.