Photo: Wikimedia Commons

Sulfate mineral

Properties

Chemical formula

Pb₇Cu₂(SO₄)₄(SiO₄)₂(OH)₂

Group

Sulfates

Crystal system

Monoclinic

Hardness (Mohs)

—

Color

—

Luster

—

Streak

—

Density

—

Cleavage

—

Fracture

—

Tenacity

—

Crystal habit

—

Transparency

—

Space group

C2/m

Fluorescence

—

Magnetism

—

Radioactivity

—

Refractive index

—

Optical character

—

Birefringence

—

Pleochroism

—

Strunz classification

7.BC.55

Dana classification

32.3.3.1

IMA status

Grandfathered mineral (G)

IMA symbol

Whr

Locality

🇺🇸 Mammoth-Saint Anthony mine

Type locality

—

Discovery year

—

Source: Wikidata