mineral
Sodalite
Na8Al6Si6O24Cl2
AI-generated identification · may be incorrectHardness of 5.5 to 6 on the Mohs scale, blue to violet color often mottled with white calcite veins, vitreous to greasy luster, isometric crystal system, poor cleavage, specific gravity of 2.1 to 2.3
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Physical properties
Hardness of 5.5 to 6 on the Mohs scale, blue to violet color often mottled with white calcite veins, vitreous to greasy luster, isometric crystal system, poor cleavage, specific gravity of 2.1 to 2.3
Formation & geological history
Forms in silica-poor igneous rocks such as nepheline syenites and plutonic environments, crystallizing from sodium-rich magmas
Uses & applications
Used as an ornamental gemstone, for decorative carvings, and in lapidary work
Geological facts
Sodalite is a rich blue mineral that can fluoresce orange-red under ultraviolet light due to mineral impurities
Field identification & locations
Identified by its distinct royal blue color mixed with white veining; commonly found in Canada, Greenland, India, and the United States
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Other mineral specimens
Gneiss or Schist
Gneiss or Mica Schist with Garnet
Metamorphic
Sandstone (with potential mineral staining/concretions)
Arenite (SiO2 based)
sedimentary
Epidote
Epidote | Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)
metamorphic
Pegmatite with Tourmaline and Quartz
Igneous Pegmatite
igneous
Granite
Granite (Phaneritic intrusive igneous rock)
igneous
Septarian Pebble
Septarian nodule / Concretion
sedimentary