mineral

Eudialyte in Matrix

Na15Ca6(Fe,Mn)3Zr3(Si,Nb)(Si25O73)(O,OH,H2O)3(Cl,OH)2

AI-generated identification · may be incorrect

Hardness: 5-5.5. Color: bright pink to magenta, reddish-brown (iron staining), white/gray matrix. Luster: Vitreous. Crystal structure: Trigonal. Specific gravity: 2.7-3.0.

Hardness: 5-5
Luster: Vitreous

Identified July 16, 2026More mineral →

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Physical properties

Hardness: 5-5.5. Color: bright pink to magenta, reddish-brown (iron staining), white/gray matrix. Luster: Vitreous. Crystal structure: Trigonal. Specific gravity: 2.7-3.0.

Formation & geological history

Primarily forms in alkaline igneous rocks (nepheline syenites) through magmatic crystallization. Often found in pegmatite veins within these massifs. Most specimens are from the Phanerozoic era.

Uses & applications

Used as a gemstone for collectors, often cut into cabochons. Also an ore of zirconium and rare earth elements (REEs) in specific industrial extraction contexts.

Geological facts

Eudialyte is known for its intense magenta-red color. It is mildly radioactive due to the presence of small amounts of thorium or uranium. It was first described in 1819 from specimens found in Greenland.

Field identification & locations

Identify by its distinct raspberry-red or pink color embedded in white or light-gray groundmass. Often associated with aegirine (black needles) and feldspars. Found in Russia (Kola Peninsula), Canada, and Greenland.