VS
Name
—
Tl₂AgCu₂As₃S₇
Formula
—
Mineral Species
Entry type
—
Sulfosalts
Chemical class
—
Triclinic
Crystal system
—
1.5–2
Mohs hardness
—
5.41
Specific gravity
—
Blackish red
Streak
—
Metallic
Luster
—
Perfect on {001}
Cleavage
—
P-1
Space group
—
—
Structural group
—
Gab · Approved
IMA
—
2002
Named in
—
Gray to black, white with red internal reflections in reflected light
Typical colors
—
Tl · Ag · Cu · As · S
Elements
—