Abstract
The Raman spectrum of polycrystalline vaterite is presented and compared to spectra of calcite and aragonite, the other two common CaCO 3 polymorphs; Raman spectroscopy easily distinguishes between these three polymorphs. An important feature of the Raman spectrum of vaterite is splitting of both the ν 1 and ν 4 peaks. The splitting of the ν 1 peak implies two distinct site symmetries for the CO 3 -2 groups. A definitive crystal structure determination of vaterite is not yet available, but none of the three proposed structures for vaterite show such a feature.
Original language | American English |
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Pages (from-to) | 983-995 |
Number of pages | 13 |
Journal | Spectroscopy Letters |
Volume | 28 |
Issue number | 6 |
DOIs | |
State | Published - 1 Sep 1995 |
Keywords
- Raman spectroscopy
- aragonite
- calcite
- crystallography
- vaterite
EGS Disciplines
- Materials Science and Engineering