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  3. Eudialyte

Polished stones - full range in stock "Eudialyte"

Eudialyte is a relatively rare mineral of igneous origin. On the Kola Peninsula, it is also called "Lappish blood" according to the belief of the local people - the Sami. It rarely forms crystals, occurring mainly in the form of continuous masses. The best examples of eudialyte have a deep crimson color and are translucent in thin plates. Eudialyte is often used as an ornamental material.

You can see eudialyte stone for sale and buy it in the Minerals of Russia online store.

Physical properties of Eudialyte

General
Category Cyclosilicate
Formula
(repeating unit)		 Na15Ca6(Fe,Mn)3Zr3SiO(O,OH,H2O)3
(Si3O9)2(Si9O27)2(OH,Cl)2
IMA symbol Eud
Strunz classification 9.CO.10
Crystal system Trigonal
Crystal class Hexagonal scalenohedral (3m)
H-M symbol: (3 2/m)
Space group R3m
Unit cell a = 14.31, c = 30.15 [Å]; Z = 12
Identification
Color Red, magenta, brown; also blue and yellow
Crystal habit Crystals short rhombohedral to long prismatic, granular, irregular masses
Cleavage Distinct on {0001} imperfect on {1120}
Fracture Uneven
Tenacity Brittle
Mohs scale hardness 5 - 6
Luster Vitreous
Streak White
Diaphaneity Transparent to translucent
Specific gravity 2.74–3.10
Optical properties Uniaxial (+/-)
Refractive index nω = 1.606–1.610 nε = 1.610–1.613
Birefringence δ = 0.004
Pleochroism Weak: O= colorless, pale yellow, pink; E= pink to colorless
Solubility H2SO4

Eudialyte
Code: 1102
Eudialyte
Kirovsky mine, Khibiny, Kola Peninsula, RF
29*21*4mm

0.00 $ $63.33

Eudialyte
Code: 2273
Eudialyte
Kirovsky mine, Khibiny, Kola Peninsula, RF
25*20*5mm

0.00 $ $98.33

Eudialyte, Nepheline (UV) archived
Code: 3497/19А
Eudialyte, Nepheline (UV)
Marchenko Peak, Khibiny, Kola Peninsula, RF
180*115*75mm

0.00 $ $220.00

Eudialyte, Nepheline (UV) archived
Code: 2544
Eudialyte, Nepheline (UV)
Marchenko Peak, Khibiny, Kola Peninsula, RF
66*35*9mm

0.00 $ $19.00

Eudialyte archived
Code: 2208
Eudialyte
Marchenko Peak, Khibiny, Kola Peninsula, RF
56*53*5mm

0.00 $ $30.00

Eudialyte, Nepheline archived
Code: 2207
Eudialyte, Nepheline
Marchenko Peak, Khibiny, Kola Peninsula, RF
66*44*7mm

0.00 $ $19.00

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