mineral
Eudialyte
Na15Ca6Fe3Zr3Si(Si25O73)(O,OH,H2O)3(Cl,OH)2
AI-generated identification · may be incorrectHardness: 5-5.5; Color: Magenta-red or burgundy in a black and white matrix; Luster: Vitreous; Crystal Structure: Trigonal; Gravity: 2.7–3.1
- Hardness
- 5-5
- Color
- Magenta-red or burgundy in a black and white matrix
- Luster
- Vitreous
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Physical properties
Hardness: 5-5.5; Color: Magenta-red or burgundy in a black and white matrix; Luster: Vitreous; Crystal Structure: Trigonal; Gravity: 2.7–3.1
Formation & geological history
Formed in unusual alkaline igneous rocks such as nepheline syenites. Most commonly associated with the Kola Peninsula and Greenland geologic formations.
Uses & applications
Primarily used as a minor ore of zirconium and as a popular collector's gemstone or lapidary material for jewelry like cabochons.
Geological facts
Eudialyte is often called 'Dragon's Blood' in the trade due to its deep red color. It is highly valued for its complex chemical structure containing rare earth elements.
Field identification & locations
Identify by the vibrant magenta-red patches contrasted against black (often aegirine) and grey/white mineral matrices. Found in alkaline massifs.
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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