Photo: Didier Descouens · CC BY-SA 4.0

Silica mineral

Properties

Chemical formula

₄₆SiO₂ * 6(N₂,CO₂) * 2(CH₄,N₂)

Group

Silicates

Crystal system

Tetragonal

Hardness (Mohs)

—

Color

Brown

Luster

—

Streak

White

Density

—

Cleavage

—

Fracture

—

Tenacity

—

Crystal habit

—

Transparency

—

Space group

P4₂/nbc

Fluorescence

—

Magnetism

—

Radioactivity

—

Refractive index

—

Optical character

—

Birefringence

—

Pleochroism

—

Strunz classification

4.DA.25

Dana classification

75.2.2.1

IMA status

Redefined mineral (Rd)

IMA symbol

Mp

Locality

—

Type locality

—

Discovery year

—

Source: Wikidata