VS
Name
—
Pb₁₄As₆S₂₃
Formula
—
Mineral Species
Entry type
—
Sulfosalts
Chemical class
—
Monoclinic
Crystal system
—
3
Mohs hardness
—
6.44
Specific gravity
—
Black
Streak
—
Metallic. R1 –R2: (400) 41.8–44.6, (420) 41.0–43.7, (440) 40.2–42.8, (460) 39.7–42.2, (480) 39.3–41.8, (500) 38.9–41.4
Luster
—
Perfect on {010}; parting on {001}
Cleavage
—
P2_1/m
Space group
—
Geocronite
Structural group
—
Jrd · Grandfathered
IMA
—
1864
Named in
—
Lead-gray, commonly tarnished, iridescent
Typical colors
—
Pb · As · S
Elements
—