Photo: Henk Smeets – tomeikminerals.com · CC BY 4.0

Borate mineral

Properties

Chemical formula

Sb₅+Mn³⁺(Mg,Mn²⁺)₁₀O₈(BO₃)₄

Group

Oxides

Crystal system

Monoclinic

Hardness (Mohs)

—

Color

—

Luster

—

Streak

—

Density

—

Cleavage

—

Fracture

—

Tenacity

—

Crystal habit

—

Transparency

—

Space group

P2

Fluorescence

—

Magnetism

—

Radioactivity

—

Refractive index

—

Optical character

—

Birefringence

—

Pleochroism

—

Strunz classification

—

Dana classification

—

IMA status

Approved mineral and/or valid name (A)

IMA symbol

Fvk

Locality

🇸🇪 Kitteln mine, Nordmark Odal field

Type locality

—

Discovery year

—

Source: Wikidata