Spectrum Mid-IR absorbance spectrum of a matrix fragment of the Oued Chebeika meteorite (CI chondrite) under ambient conditions of pressure and temperature Spectrum Mid-IR absorbance spectrum of a matrix fragment of the Oued Chebeika meteorite (CI chondrite) under vacuum Spectrum Mid-IR absorbance spectrum of a matrix fragment of the Oued Chebeika meteorite (CI chondrite) under ambient conditions of pressure and temperature Spectrum Mid-IR absorbance spectrum of a matrix fragment of the Oued Chebeika meteorite (CI chondrite) under vacuum Spectrum Mid-IR absorbance spectrum of a matrix fragment of the Oued Chebeika meteorite (CI chondrite) under ambient conditions of pressure and temperature Spectrum Mid-IR absorbance spectrum of a matrix fragment of the Oued Chebeika meteorite (CI chondrite) under vacuum Spectrum Mid-IR absorbance spectrum of a matrix fragment of the Oued Chebeika meteorite (CI chondrite) under ambient conditions of pressure and temperature Spectrum Mid-IR absorbance spectrum of a matrix fragment of the Oued Chebeika meteorite (CI chondrite) under vacuum Spectrum Average and baseline-corrected Mid-IR absorbance spectrum obtained on matrix fragments of the Oued Chebeika meteorite (CI chondrite) under vacuum