VS
Name
—
Pb₂₀As₂₄S₅₆
Formula
—
Mineral Species
Entry type
—
Sulfosalts
Chemical class
—
Monoclinic
Crystal system
—
3
Mohs hardness
—
5.3
Specific gravity
—
Chocolate-brown
Streak
—
Metallic. Anisotropism: Distinct. R1 –R2: (400) 40.0–43.0, (420) 39.3–42.6, (440) 38.6–42.2, (460) 38.0–41.8
Luster
—
—
Cleavage
—
P2_1/c
Space group
—
Sartorite
Structural group
—
Liv · Grandfathered
IMA
—
1901
Named in
—
Lead-gray, with deep red internal reflections
Typical colors
—
Pb · As · S
Elements
—