VS
Name
—
Cu(Co,Ni)₂Se₄
Formula
—
Mineral Species
Entry type
—
Sulfides
Chemical class
—
Cubic
Crystal system
—
3.5
Mohs hardness
—
6.6
Specific gravity
—
Black
Streak
—
Metallic. R: (400) 41.8, (420) 42.6, (440) 43.5, (460) 44.4, (480) 45.0, (500) 45.5, (520) 45.9, (540) 46.3
Luster
—
{001}, poor
Cleavage
—
Fd3m
Space group
—
Spinel
Structural group
—
Ty · Grandfathered
IMA
—
1952
Named in
—
Pale bronze; pale brassy bronze in reflected light
Typical colors
—
Cu · Co · Ni · Se
Elements
—