the core of the earth is mostly composed of an iron -- nickel alloy.
the core of the earth is mostly composed of?
an iron -- nickel alloy
na
na
bullet::::- wehrlite: mostly composed of olivine plus clinopyroxene.









































bullet::::- harzburgite: mostly composed of olivine plus orthopyroxene, and relatively low proportions of basaltic ingredients (because garnet and clinopyroxene are minor).









































bullet::::- lherzolite: most common form of peridotite, mostly composed of olivine, orthopyroxene (commonly enstatite), and clinopyroxene (diopside), and have relatively high proportions of basaltic ingredients (garnet and clinopyroxene). partial fusion of lherzolite and extraction of the melt fraction can leave a solid residue of harzburgite.









































section::::composition.
peridotite