Information - GMPV34 Ore deposit geochemistry and the magmatic to hydrothermal transition
Fluid phase separation and melt immiscibility in magmatic systems are key processes in the genesis of a wide variety of ore deposits. The goal of this session is to bring together researchers who describe field, experimental, and theoretical investigations of the nature of the phase transitions that generate potential ore-forming fluids during cooling and depressurization of magmas in a variety of settings. It has become increasingly clear in recent years that many of the ore deposit types traditionally regarded as being purely hydrothermal or purely magmatic in origin are profoundly influenced by processes at the stage where fluids are exsolved from magmas of various types. These magmas range from relatively common silicate magmas to rarer types including supercritical hydrous melts, as well as sulfide, carbonatite or Fe-oxide magmas, in systems as diverse as shallow subvolcanic intrusions and mafic-ultramafic layered intrusions. Contributions are welcome describing the chemistry and conditions of formation of ore-related fluids associated with magmas of all kinds, from field, laboratory, or theoretical perspectives.
Preliminary List of Solicited Speakers
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