Cathodoluminescence and trace element zoning in quartz phenocrysts and xenocrysts

Trace element incorporation into quartz: A combined study by ICP-MS, electron spin resonance, cathodoluminescence, capillary ion analysis, and gas chromatography

“…Moreover, CL microscopy revealed a more or less homogeneous distribution of luminescence active trace element centers in the investigated quartz samples. In contrast to most hydrothermal quartz and also some volcanic quartz crystals, where the spatial distribution of Al and compensating cations can vary drastically within one crystal (e.g., Perny et al, 1992;Watt et al, 1997), the pegmatite quartz samples show a homogeneous cathodoluminescence. Only secondary fluid trails were revealed, where the luminescence can a nd ϭ below detection limit (C 3 H 4 and C 3 H 8 were below detection limit in all samples).…”

Using titanium-in-quartz geothermometry and geospeedometry to recover temperatures in the aureole of the Ballachulish Igneous Complex, NW Scotland

“…It may be that another trace contaminant of quartz, possibly aluminium and lithium [Perny et al, 1992] are activating the CL zoning, or alternatively are responsible for creating crystal defects which in turn cause luminescence [Watt, 1997]. Other candidates for CL activation are K + , Na + and Fe [Landtwing, 2005].…”

Petrography and chemistry of SiO2 filling phases in the amethyst geodes from the Serra Geral Formation deposit, Rio Grande do Sul, Brazil

“…laser ablation, SIMS). Chemical data for micro-and macrocrystalline quartz from different geological settings have been published in the last decades (Fallick et al, 1985;Perny et al, 1992;Watt et al, 1997;Larsen et al, 2000;Müller et al, 2003). However, chemical analysis of quartz from geodes and cavities associated with volcanic rocks are rare and the genetic constraints for these deposits are still imprecise (Flörke et al, 1982;Merino et al, 1995;Götze et al, 2001).…”