Pb in feldspar

The Pb isotopic composition of detrital feldspar has been used successfully in recent provenance studies . LA-MC-ICPMS is the most favourable means of Pb-in-feldspar analysis. This in situ method is a rapid means of acquiring Pb isotope data (data collection from one grain/crystal can be performed in 1-2 minutes), allows the context of grains within the sediment to be retained, allows imaging and assessment of grains before and after analysis, and provides higher analytical precision than other methods. In addition, LA-MC-ICPMS using ion counters enables analysis of smaller grain sizes.