VS
Name
—
Bi₃Te₂S
Formula
—
Mineral Species
Entry type
—
Sulfides
Chemical class
—
Hexagonal
Crystal system
—
—
Mohs hardness
—
8.13
Specific gravity
—
—
Streak
—
Metallic. R1 –R2: (400) —, (420) 51.8–53.8, (440) 51.8–54.1, (460) 52.0–54.7, (480) 52.3–55.3, (500) 52.7–56.0
Luster
—
Very perfect in one direction
Cleavage
—
P-3m1
Space group
—
Tetradymite
Structural group
—
Stsm · Approved
IMA
—
1980
Named in
—
Grayish white
Typical colors
—
Bi · Te · S
Elements
—