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Compare Minerals

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

Mineral A

VS

Mineral B

K

Name

—

Mg₄(Mg₃Al₉)O₄[Si₅Be₂Al₅O₃₆]

Formula

—

Mineral Species

Entry type

—

Silicates

Chemical class

—

Monoclinic

Crystal system

—

7

Mohs hardness

—

3.61

Specific gravity

—

Green-gray

Streak

—

Vitreous

Luster

—

None

Cleavage

—

P2_1/c

Space group

—

Sapphirine

Structural group

—

Kma · Approved

IMA

—

1998

Named in

—

Very dark green

Typical colors

—

Mg · Al · O · Si · Be

Elements

—