Crystal chemical correlations between the mid and near-infrared in carbonate minerals.

@article{Hopkinson2016CrystalCC,
  title={Crystal chemical correlations between the mid and near-infrared in carbonate minerals.},
  author={Laurence J. Hopkinson and Ken J. Rutt},
  journal={Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy},
  year={2016},
  volume={162},
  pages={105-8}
}
Near-infrared (NIR) spectra of carbonates have proved important in many disciplines including planetary exploration. Classically bands in the 4000-6000 cm(-1) (2.5-1.67 μm) region are assigned to [CO3(2-)] internal mode combinations and overtones. However band assignments remain equivocal. This study examines three prominent bands ((ca 4505 cm(-1) (2.219 μm), 4900 cm(-1) (2.041 μm) and 5145 cm(-1) (1.944 μm)) from powdered calcite and aragonite group minerals. Results indicate that the bands… CONTINUE READING
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