Diiron silicide
# Diiron silicide

Diiron silicide $(Fe_2Si)$ is an intermetallic compound, a silicide of iron. It occurs in cosmic dust as the mineral hapkeite. It is a non-stoichiometric compound where the Fe:Si ratio depends on the sample preparation. A related compound $Fe_5Si_3$ occurs in nature as the mineral xifengite.

