Raman spectra of Martian glass analogues: A tool to approximate their chemical composition.

ABSTRACT: Raman spectrometers will form a key component of the analytical suite of future planetary rovers intended to investigate geological processes on Mars. In order to expand the applicability of these spectrometers and use them as analytical tools for the investigation of silicate glasses, a database correlating Raman spectra to glass composition is crucial. Here we investigate the effect of the chemical composition of reduced silicate glasses on their Raman spectra. A range of compositions was generated in a diffusion experiment between two distinct, iron-rich end-members (a basalt and a peralkaline rhyolite), which are representative of the anticipated compositions of Martian rocks. Our results show that for silica-poor (depolymerized) compositions the band intensity increases dramatically i

SUBMITTER: Di Genova D 

PROVIDER: S-EPMC5098411 | biostudies-literature | 2016 May

REPOSITORIES: biostudies-literature