VS
Name
—
Pb₉Sb₂₂S₄₂
Formula
—
Mineral Species
Entry type
—
Sulfosalts
Chemical class
—
Hexagonal
Crystal system
—
3–3.5
Mohs hardness
—
5.33
Specific gravity
—
Steel-gray
Streak
—
Metallic. Anisotropism: Distinct. R1 –R2: (400) 39.1–44.2, (420) 39.2–44.4, (440) 39.3–44.6, (460) 39.2–44.5
Luster
—
Indistinct on {1120}
Cleavage
—
P6_3
Space group
—
—
Structural group
—
Zkn · Grandfathered
IMA
—
1826
Named in
—
Steel-gray, may be tarnished iridescent; gray-white in reflected light
Typical colors
—
Pb · Sb · S
Elements
—