VS
Name
—
CuPbSbS₃
Formula
—
Mineral Species
Entry type
—
Sulfosalts
Chemical class
—
Orthorhombic
Crystal system
—
2.5–3
Mohs hardness
—
5.83
Specific gravity
—
Steel-gray to iron-black
Streak
—
Brilliant to dull
Luster
—
{010}, imperfect; {100} and {001}, less perfect
Cleavage
—
Pn2_1m
Space group
—
Bournonite
Structural group
—
Bnn · Grandfathered
IMA
—
1805
Named in
—
Gray, Black
Typical colors
—
Cu · Pb · Sb · S
Elements
—