VS
Name
—
PbBi₂Te₄
Formula
—
Mineral Species
Entry type
—
Sulfosalts
Chemical class
—
Hexagonal
Crystal system
—
—
Mohs hardness
—
7.739
Specific gravity
—
Lead-gray
Streak
—
Metallic
Luster
—
Perfect on {0001}; “average” on rhombohedron
Cleavage
—
R-3m
Space group
—
Tetradymite
Structural group
—
Ruk · Approved
IMA
—
1975
Named in
—
Silver-white; in polished section, white with very weak rose tint
Typical colors
—
Pb · Bi · Te
Elements
—