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 Information
Publication Year | 1990 |
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Title | Activators of photoluminescence in calcite: evidence from high-resolution, laser-excited luminescence spectroscopy |
DOI | 10.1016/0009-2541(90)90112-K |
Authors | V.A. Pedone, K.R. Cercone, R. C. Burruss |
Publication Type | Article |
Publication Subtype | Journal Article |
Series Title | Chemical Geology |
Index ID | 70016049 |
Record Source | USGS Publications Warehouse |