Compare Minerals

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

Mineral A

Mineral B

Erniggliite

Name

—

Tl₂SnAs₂S₆

Formula

—

Mineral Species

Entry type

—

Sulfosalts

Chemical class

—

Hexagonal

Crystal system

—

2–3

Mohs hardness

—

5.24

Specific gravity

—

Reddish black

Streak

—

“Shiny” on cleavage surfaces

Luster

—

On {0001}, perfect micaceous

Cleavage

—

P-3

Space group

—

Structural group

—

Eni · Approved

IMA

—

1987

Named in

—

Steel-gray to gray-black; grayish white in reflected light

Typical colors

—

Tl · Sn · As · S

Elements

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