VS
Name
—
Ag¹⁺(Fe²⁺₀.₅Sn⁴⁺₁.₅)S₄
Formula
—
Mineral Species
Entry type
—
Sulfides
Chemical class
—
Tetragonal
Crystal system
—
—
Mohs hardness
—
7.25
Specific gravity
—
—
Streak
—
—
Luster
—
—
Cleavage
—
I4_1/a
Space group
—
Spinel
Structural group
—
To · Approved
IMA
—
1989
Named in
—
In polished section, white. Anisotropism: Distinct to strong; pale gray to steel-bluish black. R1 –R2: n.d
Typical colors
—
Ag · Fe · Sn · S
Elements
—