Photo: Wikimedia Commons · CC BY 2.0

Phyllosilicate mineral

Properties

Chemical formula

Cu₂₋ₓAlₓ(H₂₋ₓSi₂O₅)(OH)₄ · nH₂O

Group

Silicates

Crystal system

Orthorhombic

Hardness (Mohs)

—

Color

Blue

Luster

—

Streak

—

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

74.3.2.1

IMA status

Approved mineral and/or valid name (A)

IMA symbol

Ccl

Locality

—

Type locality

—

Discovery year

—

Source: Wikidata