Photo: Wikimedia Commons · Public domain

Allotrope of carbon, mineral, substance

Properties

Chemical formula

C

Group

Elements

Crystal system

Hexagonal

Hardness (Mohs)

1,5

Color

Black

Luster

—

Streak

Black

Density

2,16 g/cm³

Cleavage

—

Fracture

—

Tenacity

—

Crystal habit

—

Transparency

—

Space group

P6₃/mmc

Fluorescence

—

Magnetism

—

Radioactivity

—

Refractive index

—

Optical character

—

Birefringence

—

Pleochroism

—

Strunz classification

1.CB.05a

Dana classification

1.3.6.2

IMA status

Grandfathered mineral (G)

IMA symbol

Gr

Locality

—

Type locality

—

Discovery year

—

Source: Wikidata