Uranyl hydroxide mineral

Properties

Chemical formula

(Na,Ca,Pb)(UO₂)O(OH) * ₀-₁H₂O

Group

Oxides

Crystal system

Trigonal

Hardness (Mohs)

—

Color

Brown

Luster

—

Streak

—

Density

—

Cleavage

—

Fracture

—

Tenacity

—

Crystal habit

—

Transparency

—

Space group

—

Fluorescence

—

Magnetism

—

Radioactivity

—

Refractive index

—

Optical character

—

Birefringence

—

Pleochroism

—

Strunz classification

4.GC.05

Dana classification

—

IMA status

Grandfathered mineral (G)

IMA symbol

Cke

Locality

🇺🇸 Penland

Type locality

—

Discovery year

—

Source: Wikidata