Compare Minerals

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

Mineral A

Mineral B

Acanthite

Name

—

Ag₂S

Formula

—

Mineral Species

Entry type

—

Sulfides

Chemical class

—

Monoclinic

Crystal system

—

2–2.5

Mohs hardness

—

7.2–7.22

Specific gravity

—

Black

Streak

—

Metallic. Anisotropism: Weak. R: (400) 32.8, (420) 32.9, (440) 33.0, (460) 33.1, (480) 33.0, (500) 32.7, (520) 32.0

Luster

—

Indistinct

Cleavage

—

P2_1/n

Space group

—

Acanthite

Structural group

—

Aca · Grandfathered

IMA

—

1855

Named in

—

Gray, Black

Typical colors

—

Ag · S

Elements

—