Sulfur fractionation of arc primary magma by early precipitation - Sulfides in melt inclusions of phenocrysts

Abstract

Olivine-hosted melt inclusions from arc volcanoes in northeast-central Japan commonly contain sulfide precipitates, and suggest that sulfur in primary mafic-magmas are fractionated by sulfide precipitation. The most mafic melt inclusions formed by early melt entrapment are expected to record the primary sulfur concentration (> 3000 ppm).