Agangi, Andrea, Gucsik, Arnold, Nishido, Hirotsugu, Ninagawa, Kiyotaka, Kamenetsky, Vadim S. (2016) Relation between cathodoluminescence and trace-element distribution of magmatic topaz from the Ary-Bulak massif, Russia. Mineralogical Magazine, 80 (5) 881-899 doi:10.1180/minmag.2016.080.023
| Reference Type | Journal (article/letter/editorial) | ||
|---|---|---|---|
| Title | Relation between cathodoluminescence and trace-element distribution of magmatic topaz from the Ary-Bulak massif, Russia | ||
| Journal | Mineralogical Magazine | ||
| Authors | Agangi, Andrea | Author | |
| Gucsik, Arnold | Author | ||
| Nishido, Hirotsugu | Author | ||
| Ninagawa, Kiyotaka | Author | ||
| Kamenetsky, Vadim S. | Author | ||
| Year | 2016 (August) | Volume | 80 |
| Issue | 5 | ||
| Publisher | Mineralogical Society | ||
| DOI | doi:10.1180/minmag.2016.080.023Search in ResearchGate | ||
| Generate Citation Formats | |||
| Mindat Ref. ID | 244807 | Long-form Identifier | mindat:1:5:244807:1 |
| GUID | 0 | ||
| Full Reference | Agangi, Andrea, Gucsik, Arnold, Nishido, Hirotsugu, Ninagawa, Kiyotaka, Kamenetsky, Vadim S. (2016) Relation between cathodoluminescence and trace-element distribution of magmatic topaz from the Ary-Bulak massif, Russia. Mineralogical Magazine, 80 (5) 881-899 doi:10.1180/minmag.2016.080.023 | ||
| Plain Text | Agangi, Andrea, Gucsik, Arnold, Nishido, Hirotsugu, Ninagawa, Kiyotaka, Kamenetsky, Vadim S. (2016) Relation between cathodoluminescence and trace-element distribution of magmatic topaz from the Ary-Bulak massif, Russia. Mineralogical Magazine, 80 (5) 881-899 doi:10.1180/minmag.2016.080.023 | ||
| Abstract/Notes | AbstractIn order to define the cathodoluminescence (CL) properties of magmatic topaz and its relation with trace-element composition, we studied topaz phenocrysts from the Ary-Bulak ongonite massif, Russia using a wide array of analytical techniques. Scanning electron microscopy CL panchromatic images reveal strong variations, which define micrometre-scale euhedral growth textures. Several truncations of these growth textures occur in single grains implying multiple growth and resorption events. The CL-spectra of both CLbright and -dark domains have a major peak in the near-ultraviolet centred at 393 nm. Cathodoluminescence images taken after several minutes of electron bombardment show decreasing emission intensity. Electron microprobe analyses indicate high F concentrations (average OH/(OH + F) = 0.04 calculated by difference, 100 wt.% – total from electron probe microanalyses), consistent with what has been found previously in topaz-bearing granites, and the OH stretching vibration (∼3653 cm–1) was detected in Raman spectra. Laser ablation inductively-coupled plasma mass spectrometry traverses performed across the CL textures detected trace elements at ppm to thousands of ppm levels, including: Fe, Mn, Li, Be, B, P, Nb, Ta, W, Ti, Ga, light rare-earth elements, Th and U. Lithium, W, Nb and Ta appear to be correlated with CL intensity, suggesting a role for some of these elements in the activation of CL in topaz. In contrast, no clear correlation was found between CL intensity and F contents, despite the fact that the replacement of OH for F is known to affect the cell parameters of topaz. | ||
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