Phyllosilicate mineral

Properties

Chemical formula

(Fe³⁺,Fe²⁺,Mg)₄[(Si,Fe³⁺)₆O₁₅](O,OH)₂·6H₂O

Group

Silicates

Crystal system

Orthorhombic

Hardness (Mohs)

2–2,5

Color

—

Luster

—

Streak

White

Density

—

Cleavage

—

Fracture

—

Tenacity

—

Crystal habit

—

Transparency

—

Space group

52

Fluorescence

—

Magnetism

—

Radioactivity

—

Refractive index

—

Optical character

—

Birefringence

—

Pleochroism

—

Strunz classification

9.EE.

Dana classification

—

IMA status

Approved mineral and/or valid name (A)

IMA symbol

Fsep

Locality

🇨🇳 Saishitang Mine

Type locality

—

Discovery year

—

Source: Wikidata