Photo: Modris Baum · Public domain

Phyllosilicate mineral

Properties

Chemical formula

Al₂O₃(SiO₂)₁.₃-₂.₀·2.5-3.0H₂O

Group

Silicates

Crystal system

Amorphous solid

Hardness (Mohs)

—

Color

White

Luster

—

Streak

White

Density

—

Cleavage

—

Fracture

—

Tenacity

—

Crystal habit

—

Transparency

—

Space group

—

Fluorescence

—

Magnetism

—

Radioactivity

—

Refractive index

—

Optical character

—

Birefringence

—

Pleochroism

—

Strunz classification

9.ED.20

Dana classification

71.1.5.1

IMA status

Grandfathered mineral (G)

IMA symbol

Alp

Locality

—

Type locality

—

Discovery year

—

Source: Wikidata