Photo: Robert M. Lavinsky · CC BY-SA 3.0

Sorosilicate mineral

Properties

Chemical formula

Be₄Si₂O₇(OH)₂

Group

Silicates

Crystal system

Orthorhombic

Hardness (Mohs)

—

Color

Colorless

Luster

—

Streak

—

Density

—

Cleavage

—

Fracture

—

Tenacity

—

Crystal habit

—

Transparency

—

Space group

Cmc2₁

Fluorescence

—

Magnetism

—

Radioactivity

—

Refractive index

—

Optical character

—

Birefringence

—

Pleochroism

—

Strunz classification

9.BD.05

Dana classification

56.1.1.1

IMA status

Grandfathered mineral (G)

IMA symbol

Btd

Locality

—

Type locality

—

Discovery year

—

Source: Wikidata