VS
Name
—
(Fe,Ni)₃₊ₓS₄ (x ≈ 0-0.3)
Formula
—
Mineral Species
Entry type
—
Sulfides
Chemical class
—
Hexagonal
Crystal system
—
—
Mohs hardness
—
4.32
Specific gravity
—
Dark gray
Streak
—
Metallic; splendent on basal section
Luster
—
Perfect basal
Cleavage
—
R-3m
Space group
—
—
Structural group
—
Syt · Grandfathered
IMA
—
1956
Named in
—
Jet-black with a brown tinge against a white background, pale bronze-yellow viewed on the mirrorlike base
Typical colors
—
Fe · Ni · S
Elements
—