VS
Name
—
CoAsS
Formula
—
Mineral Species
Entry type
—
Sulfosalts
Chemical class
—
Monoclinic
Crystal system
—
5
Mohs hardness
—
5.91–5.95
Specific gravity
—
Nearly black
Streak
—
Bright metallic. R1 –R2: (400) 49.5–48.2, (420) 48.7–48.3, (440) 48.2–48.6, (460) 47.8–48.8, (480) 47.6–49.2
Luster
—
Perfect on {101}, distinct on {010}
Cleavage
—
P2_1
Space group
—
Löllingite
Structural group
—
Acl · Grandfathered
IMA
—
1866
Named in
—
Steel-gray to silver-white
Typical colors
—
Co · As · S
Elements
—