mineral

Sodalite (Dotted or Spotted Variety)

Sodalite (Na8(Al6Si6O24)Cl2)

Hardness: 5.5-6 on Mohs scale; Color: Blue-grey with white veins or spots; Luster: Vitreous to greasy; Crystal Structure: Isometric; Cleavage: Poor/Indistinct; Specific Gravity: 2.27-2.33

Hardness: 5
Color: Blue-grey with white veins or spots
Luster: Vitreous to greasy

Identified May 25, 2026More mineral →

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Physical properties

Hardness: 5.5-6 on Mohs scale; Color: Blue-grey with white veins or spots; Luster: Vitreous to greasy; Crystal Structure: Isometric; Cleavage: Poor/Indistinct; Specific Gravity: 2.27-2.33

Formation & geological history

Found primarily in igneous rocks that crystallized from sodium-rich magmas, such as nepheline syenites and phonolites. It can also occur in contact metamorphic rocks. Small amounts are found worldwide, but large deposits are rare.

Uses & applications

Used extensively as a gemstone in jewelry (beads, cabochons), ornamental carvings, and architectural surfaces like countertops. It is also a popular specimen for crystal healing and mineral collectors.

Geological facts

Sodalite was first discovered in Greenland in 1811 but became popular after a large deposit was found in Ontario, Canada, during a visit by the Princess of Wales in 1901. It is often confused with Lapis Lazuli, but Sodalite lacks the golden pyrite inclusions common in Lapis.

Field identification & locations

Identified by its rich blue color and white streaks/patches of calcite. In the field, look for its association with other alkaline minerals. It will often fluoresce orange or bright pink under ultraviolet light. Found in Canada, Brazil, Namibia, and India.

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