Figure 5.

(a) Background corrected Raman spectra of representative lechatelierite inclusions found in PE spherules compared with the spherule matrix, lechatelierite from fulgurite, SiO₂ glass, and quartz (modified from Schaller et al. [18]). (b) Raman spectra of representative clinopyroxene crystallites compared with augite, diopside and ferrosilite standards [18]. (c) Micro-laser Raman spectra of representative microtektite matrices. Spectra are collected using a Bruker 532 nm green laser system at the Rensselaer Polytechnic Institute, Troy, NY, and are background corrected [18].