Photo: Salah Rashad Zaqzoq · CC BY-SA 4.0

Nesosilicate mineral

Properties

Chemical formula

Cu²⁺(Mn³⁺)₆O₈(SiO₄)

Group

Silicates

Crystal system

Tetragonal

Hardness (Mohs)

6,5

Color

Black

Luster

—

Streak

—

Density

4,96 g/cm³

Cleavage

—

Fracture

—

Tenacity

—

Crystal habit

—

Transparency

—

Space group

—

Fluorescence

—

Magnetism

—

Radioactivity

—

Refractive index

—

Optical character

—

Birefringence

—

Pleochroism

—

Strunz classification

9.AG.05

Dana classification

—

IMA status

Approved mineral and/or valid name (A)

IMA symbol

Abs

Locality

🇬🇷 Andros

Type locality

—

Discovery year

—

Source: Wikidata