Photo: Dan Holtstam, Luca Bindi, Hans-Jürgen Förster, Andreas Karlsson and Kjell Gatedal · CC BY-SA 4.0

Arsenosilicate mineral

Properties

Chemical formula

Mn²⁺₃(Mn²⁺,Mg,Fe³⁺,Al)₄₂(As³⁺O₃)₂(As⁵⁺O₄)₄[(Si,As⁵⁺)O₄]₆[(As⁵⁺,Si)O₄]₂(OH)₄₂

Group

Silicates

Crystal system

Trigonal

Hardness (Mohs)

—

Color

—

Luster

—

Streak

—

Density

—

Cleavage

—

Fracture

—

Tenacity

—

Crystal habit

—

Transparency

—

Space group

R-3c

Fluorescence

—

Magnetism

—

Radioactivity

—

Refractive index

—

Optical character

—

Birefringence

—

Pleochroism

—

Strunz classification

—

Dana classification

43.4.9.3

IMA status

Approved mineral and/or valid name (A)

IMA symbol

Cfc

Locality

🇳🇦 Kombat

Type locality

—

Discovery year

—

Source: Wikidata