VS
Name
—
(Pb,Sn)₁₂.₅As₃Sn₅FeS₂₈
Formula
—
Mineral Species
Entry type
—
Sulfosalts
Chemical class
—
Monoclinic
Crystal system
—
2
Mohs hardness
—
5.92
Specific gravity
—
Dark gray to almost black
Streak
—
Metallic to dull
Luster
—
Perfect on (001)
Cleavage
—
P2/m
Space group
—
—
Structural group
—
Coi · Approved
IMA
—
2005
Named in
—
Gray to dark gray; bluish gray in reflected light
Typical colors
—
Pb · Sn · As · Fe · S
Elements
—