Compare Minerals

Put any two minerals side by side — formula, structure, hardness, density and more. Type to search each slot.

Mineral A

Mineral B

Name

—

Pb₃Ge₁₋ₓS₄

Formula

—

Mineral Species

Entry type

—

Sulfides

Chemical class

—

Crystal system

—

Mohs hardness

—

6.62

Specific gravity

—

Dark gray. Anisotropism: Distinct. R1 –R2: (470) 43.5–44.5

Streak

—

Luster

—

Cleavage

—

Space group

—

Structural group

—

Mzv · Approved

IMA

—

1974

Named in

—

Brownish gray; in reflected light, white with cream-red tint

Typical colors

—

Pb · Ge · S

Elements

—