Photo: David Hospital · CC BY 4.0

Inosilicate mineral, named amphibole

Properties

Chemical formula

NaMg₂(Mg₃Al₂)(Si₅Al₃)O₂₂(OH)₂

Group

Silicates

Crystal system

Orthorhombic

Hardness (Mohs)

—

Color

—

Luster

—

Streak

—

Density

—

Cleavage

—

Fracture

—

Tenacity

—

Crystal habit

—

Transparency

—

Space group

Pnma

Fluorescence

—

Magnetism

—

Radioactivity

—

Refractive index

—

Optical character

—

Birefringence

—

Pleochroism

—

Strunz classification

9.DE.05

Dana classification

—

IMA status

Approved mineral and/or valid name (A)

IMA symbol

Ppk

Locality

🇳🇴 Ærøya

Type locality

—

Discovery year

—

Source: Wikidata