mineral

Eudialyte in Matrix

Na15Ca6Fe3Zr3Si26O72(OH,Cl,H2O)3

Hardness: 5-6 (Mohs); Color: Deep ruby-red, magenta, or pink within a mottled matrix of black, gray, and tan; Luster: Vitreous to greasy; Crystal structure: Trigonal; Cleavage: Poor/imperfect.

Hardness: 5-6 (Mohs)
Luster: Vitreous to greasy

Identified April 29, 2026More mineral →

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Physical properties

Hardness: 5-6 (Mohs); Color: Deep ruby-red, magenta, or pink within a mottled matrix of black, gray, and tan; Luster: Vitreous to greasy; Crystal structure: Trigonal; Cleavage: Poor/imperfect.

Formation & geological history

Formed in alkaline igneous rocks like nepheline syenites and pegmatites through crystallization from silicate-rich melts. Major deposits are found in the Kola Peninsula (Russia) and Greenland.

Uses & applications

Primarily a collector's mineral and used for decorative lapidary arts such as polished points, spheres, and cabochons for jewelry. It is also a minor ore of zirconium.

Geological facts

Known as 'Dragon's Blood' or 'The Blood of the Sami' in Russian folklore; it is highly prized for its vibrant red/magenta colors which contrast sharply with the host rock.

Field identification & locations

Identify by its distinct magenta-red color set against a lighter, often tan or gray matrix. It is typically found in rare-earth-element-rich pegmatite environments. Look for the irregular patches of red mineral rather than distinct crystals.

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sedimentary

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Metamorphic

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metamorphic

Nephrite Jade

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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