Raman spectroscopic study of the phosphate mineral Churchite-(Y) YPO4.2H2O
Frost, Ray L., Sejkora, Jirí, Keeffe, Eloise C., Plasil, Jakub, Cejka, Jirí, & Bahfenne, Silmarilly (2010) Raman spectroscopic study of the phosphate mineral Churchite-(Y) YPO4.2H2O. Journal of Raman Spectroscopy, 41(2), pp. 202-206.
Raman spectroscopy has been used to study the rare earth mineral churchite-(Y) of formula (Y,REE)(PO4) •2H2O. The mineral contains yttrium and depending on the locality, a range of rare earth metals. The Raman spectra of two churchite-(Y) mineral samples from Jáchymov and Medvědín in the Czech Republic were compared with the Raman spectra of churchite-(Y) downloaded from the RRUFF data base. The Raman spectra of churchite-(Y) are characterized by an intense sharp band at 975 cm-1 assigned to the ν1 (PO4)3- symmetric stretching mode. A lower intensity band observed at around 1065 cm-1 is attributed to the ν3 (PO43-) antisymmetric stretching mode. The (PO43-) bending modes are observed at 497 cm-1 (ν2) and 563 cm-1(ν4). Some small differences in the band positions between the four churchite-(Y) samples from four different localities were found. These differences are possible to explain as different compositions of the churchite-(Y) minerals.
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|Item Type:||Journal Article|
|Keywords:||churchite-(Y), phosphate, arsenate, yttrium, molecular water, hydrogen|
|Subjects:||Australian and New Zealand Standard Research Classification > CHEMICAL SCIENCE (030000) > PHYSICAL CHEMISTRY (INCL. STRUCTURAL) (030600)|
Australian and New Zealand Standard Research Classification > CHEMICAL SCIENCE (030000) > PHYSICAL CHEMISTRY (INCL. STRUCTURAL) (030600) > Colloid and Surface Chemistry (030603)
|Divisions:||Past > QUT Faculties & Divisions > Faculty of Science and Technology|
|Copyright Owner:||Copyright 2010 John Wiley & Sons|
|Deposited On:||18 Feb 2010 07:39|
|Last Modified:||01 Mar 2012 00:23|
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