VS
Name
—
FeNi₂S₄
Formula
—
Mineral Species
Entry type
—
Sulfides
Chemical class
—
Cubic
Crystal system
—
4.5–5.5
Mohs hardness
—
4.79
Specific gravity
—
gray-black
Streak
—
Metallic. R: (400) 39.0, (420) 39.6, (440) 40.2, (460) 40.6, (480) 41.0, (500) 41.4, (520) 41.9, (540) 42.5
Luster
—
Perfect on {001}
Cleavage
—
Fd-3m
Space group
—
Spinel
Structural group
—
Vio · Grandfathered
IMA
—
1889
Named in
—
Violet-gray; distinctly violet in reflected light
Typical colors
—
Fe · Ni · S
Elements
—