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Melt inclusions in Veins: Linking Magmas and Porphyry Cu Deposits
journal contributionposted on 2023-05-16, 14:36 authored by Anthony HarrisAnthony Harris, Vadim KamenetskyVadim Kamenetsky, Noel WhiteNoel White, van Achterbergh, E, Ryan, CG
At a porphyry copper-gold deposit in Bajo de la Alumbrera, Argentina, silicate-melt inclusions coexist with hypersaline liquid- and vapor-rich inclusions in the earliest magmatic-hydrothermal quartz veins. Copper concentrations of the hypersaline liquid and vapor inclusions reached maxima of 10.0 weight % (wt %) and 4.5 wt %, respectively. These unusually copper-rich inclusions are considered to be the most primitive ore fluid found thus far. Their preservation with coexisting melt allows for the direct quantification of important ore-forming processes, including determination of bulk partition coefficients of metals from magma into ore-forming magmatic volatile phases.
Department/SchoolSchool of Natural Sciences
PublisherAmerican Association for the Advancement of Science
Place of publicationStanford, California, USA