VS
Name
—
Pb₆₋₃ₓBi₂₊ₓS₉
Formula
—
Mineral Species
Entry type
—
Sulfosalts
Chemical class
—
Monoclinic
Crystal system
—
—
Mohs hardness
—
7.33
Specific gravity
—
—
Streak
—
Metallic. Anisotropism: Moderate, from gray to red-brown. R1 –R2: (470) 45.1–48.1, (546) 43.4–46.3, (589) 42.9–46.3
Luster
—
Perfect on {001}
Cleavage
—
C2/m
Space group
—
Lillianite
Structural group
—
Ahm · Approved
IMA
—
1982
Named in
—
Lead-gray; creamy white in reflected light
Typical colors
—
Pb · Bi · S
Elements
—