Mantle melting and basalt generation

Sources of knowledge of mantleWhat is the mineralogy of the mantle and what happensto it when it melts?Lherzolite is probably fertileundepleted mantle i.e. themantle that has little basalticmelt extracted from it.Dunite (20-25% 25% partial melting)and harzburgite (15-20% partialmelting) are refractory residuaafter basalt has been extracted bypartial meltingImage: John Winter (2001)