VS
Name
—
[Ag₆As₂S₇][Ag₁₀HgAs₂S₈]
Formula
—
Mineral Species
Entry type
—
Sulfosalts
Chemical class
—
Monoclinic
Crystal system
—
3.75
Mohs hardness
—
6.29
Specific gravity
—
Dark vermillion
Streak
—
Submetallic to metallic to adamantine
Luster
—
Perfect on {0001}
Cleavage
—
C2
Space group
—
Fettelite
Structural group
—
Ftt · Approved
IMA
—
1994
Named in
—
Dark violet to scarlet, wine-red in thin fragments; in reflected light, gray with a greenish tint
Typical colors
—
Ag · As · S · Hg
Elements
—