Crystal Form: Cube, rhombic dedecahedron, square or few in octahedron

Habit: Branching, lump or irregular

Hardness:2.5-3

Cleavage/Fracture: None; hackly

Luster: MetallicColor: Copper red

Streak: Copper red

Specific Gravity:8.5-8.9

Other Characteristics

:(1)Ductility

(2)Good conductor of electricity and heat

(3)Opaque