Activators of photoluminescence in calcite: evidence from high-resolution, laser-excited luminescence spectroscopy
Chemical Geology
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Abstract
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.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Activators of photoluminescence in calcite: evidence from high-resolution, laser-excited luminescence spectroscopy |
| Series title | Chemical Geology |
| DOI | 10.1016/0009-2541(90)90112-K |
| Volume | 88 |
| Issue | 1-2 |
| Year Published | 1990 |
| Language | English |
| Publisher | Elsevier |
| Larger Work Type | Article |
| Larger Work Subtype | Journal Article |
| Larger Work Title | Chemical Geology |
| First page | 183 |
| Last page | 190 |