Photo: Wikimedia Commons

Cyclosilicate, mineral

Properties

Chemical formula

Na₁₂Sr₃Ca₆Mn₃Zr₃W[Si₂₅O₇₃](O,OH,H₂O)₃(OH,Cl)₂

Group

Silicates

Crystal system

Trigonal

Hardness (Mohs)

—

Color

Orange

Luster

—

Streak

White

Density

—

Cleavage

—

Fracture

—

Tenacity

—

Crystal habit

—

Transparency

—

Space group

R3m

Fluorescence

—

Magnetism

—

Radioactivity

—

Refractive index

—

Optical character

—

Birefringence

—

Pleochroism

—

Strunz classification

9.CO.10

Dana classification

—

IMA status

Approved mineral and/or valid name (A)

IMA symbol

Mkmy

Locality

🇨🇦 Poudrette quarry

Type locality

—

Discovery year

—

Source: Wikidata