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Journal of Spectroscopy
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Journal of Spectroscopy
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2022
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Article
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Fig 6
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Research Article
Characterization of Natural Precious Opal Using Modern Spectroscopic Techniques in Ethiopia: The Case from Delanta, South Wollo
Figure 6
FTIR spectra profiles of opal samples: Ds-1, Ds-2, Ds-3, Ds-4, Ds-5, and Ds-6.