mineral

Sodalite

Sodium Aluminum Silicate Chloride (Na8(Al6Si6O24)Cl2)

Hardness: 5.5-6 (Mohs scale); Color: Royal blue, grey, white, or green; Luster: Vitreous to greasy; Crystal Structure: Isometric (cubic); Cleavage: Poor; Specific Gravity: 2.27-2.33

Hardness: 5
Color: Royal blue, grey, white, or green
Luster: Vitreous to greasy

Identified June 22, 2026More mineral →

Identify your own rocks.

Get a report just like this from any photo, free.

App Store Google Play

Physical properties

Hardness: 5.5-6 (Mohs scale); Color: Royal blue, grey, white, or green; Luster: Vitreous to greasy; Crystal Structure: Isometric (cubic); Cleavage: Poor; Specific Gravity: 2.27-2.33

Formation & geological history

Commonly forms in igneous rocks that crystallized from sodium-rich magmas, specifically nepheline syenites and phonolites. It orignates in silica-poor environments.

Uses & applications

Primarily used as a gemstone for jewelry (beads, cabochons), ornamental carvings, and as a decorative stone in architecture (slabs for countertops or tiles).

Geological facts

Sodalite is often confused with Lapis Lazuli; however, Sodalite rarely contains the golden pyrite flecks found in Lapis. It is a member of the feldspathoid mineral group.

Field identification & locations

Identify in the field by its rich blue color and white veins of calcite. It will often fluoresce a bright orange-red under long-wave UV light. Found in Canada (Bancroft), Brazil, and Namibia.

Other mineral specimens

See all

Sandstone (with potential mineral staining/concretions)

Arenite (SiO2 based)

sedimentary

Schist

Metamorphic

Epidote

Epidote | Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)

metamorphic

Nephrite Jade

Nephrite

Mineral/Rock

Banded Gneiss (River Rock/Pebble)

Gneiss (specifically a banded variety often found as a river rock)

Metamorphic Rock

Green Apatite on Albite

Fluorapatite [Ca5(PO4)3F] on Albite [Na(AlSi3O8)]

mineral