VS
Name
—
Pb₃Sb₈S₁₅
Formula
—
Mineral Species
Entry type
—
Sulfosalts
Chemical class
—
Monoclinic
Crystal system
—
2.5
Mohs hardness
—
5.22
Specific gravity
—
Reddish gray
Streak
—
Metallic. Anisotropism: May be weak in bluish gray, moderate in blue-green to red-brown. R1 –R2: (400) 37.8–45.9
Luster
—
—
Cleavage
—
C2/c
Space group
—
—
Structural group
—
Fül · Grandfathered
IMA
—
1929
Named in
—
Lead-gray; may tarnish steel-blue or bronzy white in polished section
Typical colors
—
Pb · Sb · S
Elements
—