Spectrum Average Raman spectrum obtained on matrix fragments of sample A0106-4 (n = 39) Spectrum Average Raman spectrum obtained on matrix fragments of sample A0106-6 (n = 30) Spectrum Average Raman spectrum obtained on matrix fragments of sample A0106-23 (n = 40) Spectrum Average Raman spectrum obtained on matrix fragments of sample A0108-6 (n = 30) Spectrum Average Raman spectrum obtained on matrix fragments of sample A0108-10 (n = 23) Spectrum Average Raman spectrum obtained on matrix fragments of sample A0108-18 (n = 33) Spectrum Average Raman spectrum obtained on matrix fragments of sample A0108-61 (n = 33) Spectrum Average Raman spectrum obtained on matrix fragments of sample C0109-5 (n = 30) Spectrum Average Raman spectrum obtained on matrix fragments of aggregate C0109-9 (n = 28) Spectrum Average Raman spectrum obtained on matrix fragments of aggregate C0109-12 (n = 25) Spectrum Average Raman spectrum obtained on matrix fragments of individual particule C0057-6 (n = 35) Spectrum Average Raman spectrum obtained on matrix fragments of individual particule C0002 (n = 30)