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Raman spectroscopic study of azurite and malachite at 298 and 77 K

โœ Scribed by R. L. Frost; W. N. Martens; L. Rintoul; E. Mahmutagic; J. T. Kloprogge

Publisher
John Wiley and Sons
Year
2002
Tongue
English
Weight
154 KB
Volume
33
Category
Article
ISSN
0377-0486

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## Abstract A comparative study of a suite of natural oxalates including weddellite, whewellite, moolooite, humboldtine, glushinskite, natroxalate and oxammite was undertaken using Raman spectroscopy at 298 and 77 K. Oxalates are found as films on host rocks as a result of heavy metal expulsion by

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Raman spectra of kaolinite and of the formamide-intercalated kaolinite were obtained at both 298 and 77 K using a Raman microprobe equipped with a thermal stage. Upon cooling to 77 K, the band attributed to the inner hydroxyl shifts by 5 cm-1 to lower wavenumbers and the bands assigned to the inner