Germanate mineral

Properties

Chemical formula

PbFeGe(Ge₂O₇)(OH)₂·H₂O

Group

Oxides

Crystal system

Monoclinic

Hardness (Mohs)

—

Color

Colorless

Luster

—

Streak

White

Density

—

Cleavage

—

Fracture

—

Tenacity

—

Crystal habit

—

Transparency

—

Space group

—

Fluorescence

—

Magnetism

—

Radioactivity

—

Refractive index

—

Optical character

—

Birefringence

—

Pleochroism

—

Strunz classification

9.JA.10

Dana classification

7.6.2.1

IMA status

Approved mineral and/or valid name (A)

IMA symbol

Btk

Locality

🇳🇦 Tsumeb Mine

Type locality

—

Discovery year

—

Source: Wikidata