Cyclosilicate mineral

Properties

Chemical formula

☐(Fe³⁺,Mg,Fe²⁺)₂(Mg,Fe²⁺,Fe³⁺)₃(Si₁₂O₃₀)

Group

Silicates

Crystal system

—

Hardness (Mohs)

—

Color

—

Luster

—

Streak

—

Density

—

Cleavage

—

Fracture

—

Tenacity

—

Crystal habit

—

Transparency

—

Space group

—

Fluorescence

—

Magnetism

—

Radioactivity

—

Refractive index

—

Optical character

—

Birefringence

—

Pleochroism

—

Strunz classification

9.CM.05

Dana classification

—

IMA status

Approved mineral and/or valid name (A)

IMA symbol

Tra

Locality

🇦🇹 Stradner Kogel

Type locality

—

Discovery year

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Source: Wikidata