The basic copper arsenate minerals olivenite, cornubite, cornwallite and clinoclase : an infrared emission and Raman spectroscopic study

Wayde Neil Martens, Ray L. Frost, J. T. Kloprogge, Peter A. Williams

    Research output: Contribution to journalArticle

    Abstract

    Molecular structures of the basic copper arsenate minerals olivenite, cornubite, cornwallite, and clinoclase were studied using a combination of infrared emission spectroscopy and Raman spectroscopy. Infrared emission spectra of the basic copper arsenates were obtained over the temperature range 100 to 1000 °C. The IR emission spectra of the four minerals are different, in line with differences in crystal structure and composition. The Raman spectra are similar, particularly in the OH-stretching region, but characteristic differences in the deformation regions are observed. Differences are also observed in the arsenate stretching and bending regions. Infrared emission studies show that the minerals are completely dehydroxylated by 550 °C.
    Original languageEnglish
    Number of pages8
    JournalThe American Mineralogist
    Publication statusPublished - 2003

    Keywords

    • Raman spectroscopy
    • arsenate minerals
    • copper
    • infrared spectroscopy
    • molecular structure

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