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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

L

Name

—

K₂NaMn₇Zr₂(Si₄O₁₂)₂O₂(OH)₄F

Formula

—

Mineral Species

Entry type

—

Silicates

Chemical class

—

Triclinic

Crystal system

—

3

Mohs hardness

—

3.367

Specific gravity

—

Light brown

Streak

—

Vitreous

Luster

—

Perfect on {001}

Cleavage

—

P-1

Space group

—

Astrophyllite

Structural group

—

Lvv · Approved

IMA

—

2018

Named in

—

Pale brown to dark brown

Typical colors

—

K · Na · Mn · Zr · Si · O · H · F

Elements

—