VS
Name
—
RuS₂
Formula
—
Mineral Species
Entry type
—
Sulfides
Chemical class
—
Cubic
Crystal system
—
7.5
Mohs hardness
—
6.43
Specific gravity
—
Dark gray
Streak
—
Metallic. R: (400) 51.2, (420) 49.8, (440) 48.5, (460) 47.0, (480) 45.7, (500) 44.6, (520) 43.7, (540) 42.8
Luster
—
Perfect on {111}
Cleavage
—
Pa3
Space group
—
Pyrite
Structural group
—
Lrt · Grandfathered
IMA
—
1866
Named in
—
Iron-black, in polished section, white to gray, bluish
Typical colors
—
Ru · S
Elements
—