VS
Name
—
Tl₂As₇.₅Sb₀.₃S₁₃
Formula
—
Mineral Species
Entry type
—
Sulfosalts
Chemical class
—
Monoclinic
Crystal system
—
2–2.5
Mohs hardness
—
4.02
Specific gravity
—
Bright brick-red
Streak
—
Vitreous to metallic if tarnished
Luster
—
Perfect on {001}
Cleavage
—
P2/n
Space group
—
—
Structural group
—
Gly · Approved
IMA
—
1989
Named in
—
Deep red to maroon, tarnishing to darker red or blue; pale gray in reflected light
Typical colors
—
Tl · As · Sb · S
Elements
—