Spectrum Representative raw Raman spectrum (514 nm laser) of matrix grains from EET83355 C2-ungrouped chondrite Spectrum Representative raw Raman spectrum (514 nm laser) of matrix grains from EET96029 CM2 chondrite Spectrum Representative raw Raman spectrum (514 nm laser) of matrix grains from LAP02333 CM2 chondrite Spectrum Representative raw Raman spectrum (514 nm laser) of matrix grains from MAC88100 CM2 chondrite Spectrum Representative raw Raman spectrum (514 nm laser) of matrix grains from MET01072 CM2 chondrite Spectrum Representative raw Raman spectrum (514 nm laser) of matrix grains from PCA02012 CM2 chondrite Spectrum Representative raw Raman spectrum (514 nm laser) of matrix grains from ALH84033 CM2 chondrite Spectrum Representative raw Raman spectrum (514 nm laser) of matrix grains from EET87522 CM2 chondrite Spectrum Representative raw Raman spectrum (514 nm laser) of matrix grains from MIL07700 CM2 chondrite Spectrum Representative raw Raman spectrum (514 nm laser) of matrix grains from Paris (altered lithology) CM chondrite