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  • Title: A vibrational spectroscopic study of tengerite-(Y) Y2(CO3)3 2-3H2O.
    Author: Frost RL, López A, Wang L, Scholz R, Sampaio NP, de Oliveira FA.
    Journal: Spectrochim Acta A Mol Biomol Spectrosc; 2015 Feb 25; 137():612-6. PubMed ID: 25244294.
    Abstract:
    The mineral tengerite-(Y) has been studied by vibrational spectroscopy. Multiple carbonate stretching modes are observed and support the concept of non-equivalent carbonate units in the tengerite-(Y) structure. Intense sharp bands at 464, 479 and 508 cm(-1) are assigned to YO stretching modes. Raman bands at 765 and 775 cm(-1) are assigned to the CO3(2-) ν4 bending modes and Raman bands at 589, 611, 674 and 689 cm(-1) are assigned to the CO3(2-) ν2 bending modes. Multiple Raman and infrared bands in the OH stretching region are observed, proving the existence of water in different molecular environments in the structure of tengerite-(Y).
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