Laser-excited luminescence spectroscopy of a red-algal, biogenic calcite and a synthetic Mn-calcite can make the distinction between organic and trace-element activators of photoluminescence. Organic-activated photoluminescence in biogenic calcite is characterized by significant peak shifts and increasing intensity with shorter-wavelength excitation and by significant decreases in intensity after heating to ≥ 400°C. In contrast, Mn-activated photoluminescence shows no peak shift, greatest intensity under green excitation and limited changes after heating. Examination of samples with a high-sensitivity spectrometer using several wavelengths of exciting light is necessary for identification of photoluminescence activators. © 1990.
CITATION STYLE
Pedone, V. A., Cercone, K. R., & Burruss, R. C. (1990). Activators of photoluminescence in calcite: evidence from high-resolution, laser-excited luminescence spectroscopy. Chemical Geology, 88(1–2), 183–190. https://doi.org/10.1016/0009-2541(90)90112-K
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