Fig. 7: Metallic melt segregation.
From: Imagining and constraining ferrovolcanic eruptions and landscapes through large-scale experiments
Schematic illustration of the spontaneous segregation of metallic melt from silicate melt in the experimental furnace. The silicon carbide crucible degrades into silica and carbon monoxide. The carbon monoxide reduces the basaltic melt. This causes part of the ferric and ferrous iron contained in the basaltic melt to reduce all the way to metallic iron and to precipitate and pool at the bottom of the crucible. Phosphorous, which becomes siderophile under reducing conditions, partially migrates into the metallic melt.
