VS
Name
—
CuFeS₂
Formula
—
Mineral Species
Entry type
—
Sulfides
Chemical class
—
Tetragonal
Crystal system
—
3.5–4
Mohs hardness
—
4.1–4.3
Specific gravity
—
Greenish black
Streak
—
Metallic. Anisotropism: Weak. R1 –R2: (400) 16.0–17.3, (420) 20.0–21.3, (440) 24.8–26.1, (460) 30.2–31.4
Luster
—
Poor on {011} and {111}
Cleavage
—
I-42d
Space group
—
Chalcopyrite
Structural group
—
Ccp · Grandfathered
IMA
—
1725
Named in
—
Yellow, Orange
Typical colors
—
Cu · Fe · S
Elements
—