VS
Name
—
Ni₁₁As₈
Formula
—
Mineral Species
Entry type
—
Sulfides
Chemical class
—
Monoclinic
Crystal system
—
5
Mohs hardness
—
8
Specific gravity
—
Blackish gray
Streak
—
Metallic. Anisotropism: Weak. R1 –R2: (400) 44.2–44.8, (420) 45.1–45.4, (440) 46.0–45.9, (460) 46.9–46.4
Luster
—
—
Cleavage
—
P4_12_12
Space group
—
—
Structural group
—
Muc · Grandfathered
IMA
—
1913
Named in
—
Platinum-gray with reddish tint, tarnishes coppery red; in polished section, pinkish gray
Typical colors
—
Ni · As
Elements
—