Infrared Absorption Investigations Confirm the Extraterrestrial Origin of Carbonado Diamonds

@article{Garai2006InfraredAI,
  title={Infrared Absorption Investigations Confirm the Extraterrestrial Origin of Carbonado Diamonds},
  author={Jozsef Garai and Stephen E. Haggerty and Sandeep Rekhi and Mark R. Chance},
  journal={The Astrophysical Journal Letters},
  year={2006},
  volume={653},
  pages={L153 - L156}
}
The first complete infrared FTIR absorption spectra of carbonado diamond confirm the interstellar origin of this most enigmatic diamond. All previous attempts failed to measure the absorption of carbonado diamond in the most important IR range of 1000-1300 cm-1 (10.00-7.69 μm) because of silica inclusions. In our investigation, KBr pellets were made from crushed silica-free carbonado diamond, and thin sections were also prepared. The 100-1000 times brighter synchrotron infrared radiation… 
Infrared and Raman spectroscopic observations of Central African carbonado and implications for its origin
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Abstract– None of the well‐established nitrogen‐related IR absorption bands, common in synthetic and terrestrial diamonds, have been identified in the presolar diamond spectra. In the carbonado
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Abstract In this study we report the first hydrogen isotope composition analyses on carbonado diamond along with cathodoluminescence and scanning electron microscopic imaging, electron microprobe
Petrogenesis of mineral micro-inclusions in an uncommon carbonado
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