VS
Name
—
As
Formula
—
Mineral Species
Entry type
—
Native Elements
Chemical class
—
Orthorhombic
Crystal system
—
2
Mohs hardness
—
5.3–5.5
Specific gravity
—
Black
Streak
—
Metallic, brilliant. Anisotropism: Weak. R1 –R2: (400) —, (420) 42.8–56.8, (440) 43.6–55.4, (460) 44.3–54.0
Luster
—
Perfect, in one direction
Cleavage
—
Bmab
Space group
—
Arsenolamprite
Structural group
—
Asl · Grandfathered
IMA
—
1886
Named in
—
Gray-white, altering to a dull black coating
Typical colors
—
As
Elements
—