VS
Name
—
Cu₂₋ₓSe (x ≈ 0.12)
Formula
—
Mineral Species
Entry type
—
Sulfides
Chemical class
—
Cubic
Crystal system
—
2.7
Mohs hardness
—
6.71
Specific gravity
—
Shining
Streak
—
Metallic. Anisotropism: Isotropic, may be slightly anisotropic. R: (400) 25.8, (420) 28.9, (440) 30.0, (460) 30.7
Luster
—
—
Cleavage
—
F-43m
Space group
—
—
Structural group
—
Brz · Grandfathered
IMA
—
1832
Named in
—
Silver-white, tarnishing
Typical colors
—
Cu · Se
Elements
—