Photo: Modris Baum · CC0

Double chain inosilicate

Properties

Chemical formula

K₅Na₅Y₁₂Si₂₈O₇₀(OH)₂(CO₃)₈·8H₂O

Group

Silicates

Crystal system

Tetragonal

Hardness (Mohs)

—

Color

Pink

Luster

—

Streak

—

Density

—

Cleavage

—

Fracture

—

Tenacity

—

Crystal habit

—

Transparency

—

Space group

—

Fluorescence

—

Magnetism

—

Radioactivity

—

Refractive index

—

Optical character

—

Birefringence

—

Pleochroism

—

Strunz classification

9.DN.15

Dana classification

70.3.1.1

IMA status

Renamed mineral (Rn)

IMA symbol

Acf-Y

Locality

🇬🇱 Narsaarsuk pegmatite

Type locality

—

Discovery year

—

Source: Wikidata