mineral

Sodalite (Sunset Sodalite)

Sodalite: Na8(Al6Si6O24)Cl2

Hardness: 5.5-6.0 Mohs; Color: Royal blue mottled with orange Feldspar/Calcite; Luster: Vitreous to greasy; Crystal Structure: Isometric (cubic); Cleavage: Poor/indistinct; Specific Gravity: 2.27-2.33

Hardness: 5
Color: Royal blue mottled with orange Feldspar/Calcite
Luster: Vitreous to greasy

Identified May 25, 2026More mineral →

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Physical properties

Formation & geological history

Forms in silica-poor igneous rocks (nepheline syenites) and contact metamorphic environments where sodium-rich fluids react with carbonate rocks. The orange inclusions are often Sunstone or Feldspar matrix.

Uses & applications

Primarily used for ornamental carvings, beads, jewelry, and as a popular metaphysical or pocket stone for collectors.

Geological facts

Sodalite is a member of the sodalite group and is known as a feldspathoid. Sunset Sodalite is a specific trade name for specimens prominently featuring orange inclusions, often originating from Brazil.

Field identification & locations

Identify by its distinctive royal blue color with orange/salmon veining. It lacks the gold pyrite flecks commonly found in Lapis Lazuli and has a lower hardness than quartz.

Other mineral specimens

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Sandstone (with potential mineral staining/concretions)

Arenite (SiO2 based)

sedimentary

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

Biotite Schist

Biotite-rich Schist [K(Mg,Fe)3AlSi3O10(F,OH)2]

metamorphic

Green Apatite on Albite

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

mineral