Although the platinum-group elements (PGE) are trace components in magmatic ores, they tend to form discrete mineral phases (PGM) with other PGE (alloys), S and trace semimetals (As, Te, Sb); a feature, which suggests strong chemical affinity of PGE towards certain ligands at magmatic temperatures. New mineralogical and experimental evidence suggest that PGE can crystallize directly from silicate and sulfide melts and that semimetals play an important role in PGE mineralogy in both magmatic and hydrothermal ores. Mineralogists and experimental petrologists are invited to present new data on PGE mineralogy and geochemistry of magmatic ore deposits and experimental studies of PGE-bearing sulfide and silicate melts.
Professor Dr Hassan Helmy (Egypt)
About the session convenor
Professor of Petrology at Minia University, Egypt. Interested in the petrology of base- and noble metal ores and their host rocks in a variety of tectonic settings. Expert in experimental petrology of noble-metal and semi-metal bearing sulfide systems. Worked as a Visiting Professor at Kyoto University, Japan for two years. In 2008, he was awarded the prestigious Alexander von Humboldt Fellowship for two years at Bonn University, Germany. Currently, he is the Secretary of Commission of Ore Mineralogy (COM). From 2008 to 2016 he was the Vice President of the Geological Society of Africa