VS
Name
—
PbBi₂S₄
Formula
—
Mineral Species
Entry type
—
Sulfosalts
Chemical class
—
Orthorhombic
Crystal system
—
2.5–3.5
Mohs hardness
—
7.04
Specific gravity
—
Black
Streak
—
Metallic. Anisotropism: Strong. R1 –R2: (400) 48.0–51.1, (420) 47.9–51.1, (440) 47.8–51.1, (460) 47.7–51.0
Luster
—
Good on {110}
Cleavage
—
Pnam
Space group
—
Kobellite
Structural group
—
Gbit · Grandfathered
IMA
—
1878
Named in
—
Pale gray to tin-white or lead-gray, may tarnish yellow or iridescent
Typical colors
—
Pb · Bi · S
Elements
—