A vibrational spectroscopic study of tengerite-(Y) Y-2(CO3)(3) 2-3H(2)O

摘要

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 CO32- v(4) bending modes and Raman bands at 589, 611, 674 and 689 cm(-1) are assigned to the CO32- v(2) 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). (C) 2014 Elsevier B.V. All rights reserved.