Dear all, May I kindly ask you to forward the ad below to any potential PhD candidate? Best regards, Julien ================ One fully funded 4-year PhD position supported by the Swiss National Science Foundation is available at the Institute of Geochemistry and Petrology of the ETH Zürich (Switzerland). The doctoral candidate will be part of the Magmatic Petrology and Volcanology group, working under the supervision of Dr. Julien Allaz and Prof. Olivier Bachmann: http://www.magmavolc.ethz.ch/ Successful candidate should start at the latest on September 1st, 2019, although an earlier start on July 1st would be preferred. The candidate should have a strong interest in magmatic petrology, mineralogy, and field work. Knowledge of one or more of the following techniques will be an advantage (in order of importance): EPMA, SEM, LA-ICP-MS, microthermometry on fluid inclusion, SIMS. Title: REE-mineralization in pegmatites of the South Platte district in the Pikes Peak Batholith, Colorado (USA) Abstract: This project aims to understand the Rare Earth Element (REE) mineralization processes of several pegmatites hosted in the northern part of the Pikes Peak Batholith, a typical anorogenic “A-type” subaluminous to peralkaline intrusion. These pegmatites show a concentric zonation with a border facies against the granite, a microcline-rich intermediate zone, and a quartz or quartz + microcline core with a REE-rich mineralization occurring as veins and pockets near the interface between the intermediate zone and the core of the pegmatite. Previous works suggested an REE-enrichment, trending toward more heavy-REE + Y (HREE) or more light-REE (LREE) enrichment between different pegmatite. However, these limited data remain overall not conclusive. The investigation will compare these pegmatites and their host rocks in greater petrological and geochemical detail and with state-of-the-art analytical methods in order to answer one fundamental questions: what are the processes, melt- or aqueous/carbonic fluid-related, that lead to the REE-enrichment in the batholith, and the concentration, transport, and precipitation of REE-rich phases in the pegmatite.