Vibrational spectroscopy of the basic copper phosphate minerals: pseudomalachite, ludjibaite and reichenbachite.
The vibrational spectra of pseudomalachite, reichenbachite and ludjibaite have been obtained at 298 K using a combination of FTIR and Raman microscopy. The vibrational spectra of the minerals are different, in line with differences in crystal structure and composition. Some similarity in the Raman spectra of the three polymorphs pseudomalachite, reichenbachite and ludjibaite exists, particularly in the OH stretching region, but characteristic differences in the OH deformation regions are observed. Differences are also observed in the phosphate stretching and deformation regions.
Frost
Ray L
RL
Centre for Instrumental and Developmental Chemistry, Queensland University of Technology, Brisbane, Queensland, Australia. r.frost@qut.edu.au
Kloprogge
Theo
T
Williams
Peter A
PA
Martens
Wayde
W
Johnson
Therese E
TE
Leverett
Peter
P
D003300:Copper / Q000737:chemistry*; D006878:Hydroxides / Q000737:chemistry; D008903:Minerals / Q000737:chemistry*; D010710:Phosphates / Q000737:chemistry*; D017550:Spectroscopy, Fourier Transform Infrared; D013059:Spectrum Analysis, Raman
D006878:Hydroxides; D008903:Minerals; D010710:Phosphates; D003300:Copper; C031356:hydroxide ion