Photo: Thomas Witzke · CC BY-SA 3.0 de

Questionable hydroxyde mineral

Properties

Chemical formula

(Mn₄+,Fe³⁺,Ca,Na)(O,OH)₂ * nH₂O

Group

Oxides

Crystal system

Hexagonal

Hardness (Mohs)

—

Color

—

Luster

—

Streak

—

Density

—

Cleavage

—

Fracture

—

Tenacity

—

Crystal habit

—

Transparency

—

Space group

—

Fluorescence

—

Magnetism

—

Radioactivity

—

Refractive index

—

Optical character

—

Birefringence

—

Pleochroism

—

Strunz classification

4.FE.40

Dana classification

—

IMA status

Questionable (Q)

IMA symbol

Vnd

Locality

—

Type locality

—

Discovery year

—

Source: Wikidata