VS
Name
—
Ag₃₊ₓSb₁₋ₓ (x ≈ 0.2)
Formula
—
Mineral Species
Entry type
—
Sulfides
Chemical class
—
Orthorhombic
Crystal system
—
3.5–4
Mohs hardness
—
9.712
Specific gravity
—
Silver-white
Streak
—
Metallic
Luster
—
Distinct on {001} and {011}; imperfect on {110}
Cleavage
—
Pm2m
Space group
—
Allargentum
Structural group
—
Dys · Grandfathered
IMA
—
1832
Named in
—
Silver-white, tarnishing to lead-gray, pale yellow, or black
Typical colors
—
Ag · Sb
Elements
—