VS
Name
—
PtCu
Formula
—
Mineral Species
Entry type
—
Native Elements
Chemical class
—
Hexagonal
Crystal system
—
4
Mohs hardness
—
15.71
Specific gravity
—
Black
Streak
—
Metallic. Anisotropism: Weak to moderate, dull gray to dull reddish brown; copery brown to bright blue
Luster
—
On {1011}
Cleavage
—
R-3m
Space group
—
—
Structural group
—
Hng · Approved
IMA
—
1974
Named in
—
Lead-gray, steel-gray, may be tarnished brown; in reflected light, bright white with a slight brownish tint
Typical colors
—
Pt · Cu
Elements
—