Xifengite

Xifengite(Fe5Si3) is a metallic mineral. The crystal system of Xifengite is hexagonal. It has a specific gravity of 6.45 and a Mohs hardness of 5.5. It occurs as steel gray inclusions within other meteorite derived nickel iron mineral phases.It was first described in 1984 and named for the eastern passageway, Xifengkou, of the Great Wall of China. The type locality is the Yanshan meteorite of the Hebei Province, China. It has also been reported from dredgings along the East Pacific Rise.
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General Information:
 Chemical Formula:
Fe5Si3
 Composition:
(Molecular Weight = 363.49 gm)
Iron 76.82 % Fe
Silicon 23.18 % Si
 Empirical Formula:
Fe2+5Si3
Physical Properties:
 Cleavage:
None
 Color:
steel gray.
 Density:
6.45
 Diaphaniety:
Opaque
 Hardness:
5.5 - Knife Blade
 Luster:
Metallic
 Streak:
black
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