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Eltyubyuite

Collectors Summary

Color hellbraun, gelb
Crystal System kubisch, I43d
Morphology Mikrometer große Einschlüsse in Rondorfit (Typmaterial)

Chemism

Chemical formula

Ca12Fe3+10Si4O32Cl6

Empirical formula (analysis)

Ca12.12Mg0.04Ti0.11Fe9.41Al1.26Si2.98O31.89Cl5.04

Additional chem. information

Verwandt mit Wadalit

Chemical composition

Calcium, Chlor, Eisen, Silicium, Sauerstoff

Unit weight: 1824.088691632 u; Number of atoms in the formula: 62.85

Info

Empirical formula:

Ca12.12Mg0.04Ti0.11Fe9.41Al1.26Si2.98O31.89Cl5.04

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Oxygen

O

27.97

31.89

50.74

15.9994300

510.2218227
Magnesium

Mg

0.05

0.04

0.06

24.3050600

0.9722024
Aluminium

Al

1.86

1.26

2.00

26.9815382

33.9967381
Silicon

Si

4.59

2.98

4.74

28.0855300

83.6948794
Chlorine

Cl

9.80

5.04

8.02

35.4532000

178.6841280
Calcium

Ca

26.63

12.12

19.28

40.0784000

485.7502080
Titanium

Ti

0.29

0.11

0.18

47.8671000

5.2653810
Iron

Fe

28.81

9.41

14.97

55.8452000

525.5033320

Strunz 9th edition incl. updates

9.AD.25

9: Silikate (Germanate)
A: Inselsilikate (Nesosilikate)
D: Insel(Neso)silikate ohne weitere Anionen; Kationen in oktahedraler [6] und gewöhnlich größerer Koordination
25:Granat-Gruppe

Lapis Classification

VIII/A.08-205

VIII: SILIKATE
A: Inselsilikate mit [SiO4] 4--Baugruppen
8: Kationen in kubischer und oktaedrischer Koordination [8+6]; Granat-Gruppe

Classification by Hölzel

9.AC.920

9: SILICATES
A: Nesosilicates
C: Garnet-Group
9: Garnet-like

IMA status

anerkannt - CNMNC - New minerals and nomenclature modifications approved in Jun. 2011

Mineral status

anerkanntes Mineral

IMA Classification

IMA Classification

 Mayenite supergroup  ⇒ Wadalite group

Optical Properties

Color

hellbraun, gelb

Diaphaneity (Transparency)

transparent

Ri mean

1.85

Crystallography

Crystal System

kubisch

Class (H-M)

43m

Space Group number

220

Space Group

I43d

Cell parameters a (Å)

12.20

Cell parameters b (Å)

-

Cell parameters c (Å)

-

Cell parameters a/b or c/a

1

Cell parameters c/b

-

Cell parameters α

90°

Cell parameters β

90°

Cell parameters γ

90°

Z

2

Volume (ų)

1815.848

X-Ray Powder Diffraction

4.981(30), 3.261(13), 3.050(49), 2.728(100), 2.490(62), 2.227(13), 1.692(28), 1.630(40)
XRD chart Eltyubyuite

Calculated from d-spacing and intensity at 0.1541838 nm (Cu)

Morphology

Mikrometer große Einschlüsse in Rondorfit (Typmaterial)

Physical Properties

Density (g/cm³)

3,349 (berechnet)

3.336 ( ρ calc. Mineralienatlas )

(Co-)Type locality

(Co-)Type locality

Russland/Nordkaukasus, Föderationskreis/Kabardino-Balkarien, Republik/Obere vulkanische Chegem-Struktur (Verkhnechegemskaya Caldera)

Russland/Nordkaukasus, Föderationskreis/Kabardino-Balkarien, Republik/Obere vulkanische Chegem-Struktur (Verkhnechegemskaya Caldera)/Verkhni

Type material

Fersman Mineralogisches Museum, russische Akademie der Wissenschaften, Moskau, Russland

Collection number of type material

4027/1 und 4027/2

Paragenesis of type material

Hydroxylellestadit, edgrewite, Hydroxyledgrewit, Chegemit, Fluorchegemit, Cuspidin, Lakargiit, Perowskit, Kerimasit, Srebrodolskit und Dovyrenit

Preface

Name from

Der Name wurde nach dem Balkarischen Dorf Eltyubyu, das in der Nähe der Typuslokalität liegt, vergeben.

Author (Name, Year)

Galuskin, E.V., Bailau, R., Galuskina, I.O., Prusik, A.K., Gazeev, V.M., Zadov, A.E., Pertsev, N.N., Ježak, L., Gurbanov, A.G. and Dubrovinsky, L. (2011)

References

Galuskin, E.V., Bailau, R., Galuskina, I.O., Prusik, A.K., Gazeev, V.M., Zadov, A.E., Pertsev, N.N., Ježak, L., Gurbanov, A.G. and Dubrovinsky, L. (2011) Eltyubyuite, IMA 2011-022. CNMNC Newsletter No. 10, October 2011, page 2553;

Evgeny V.Galuskin, Irina O.Galuskina, Radu Bailau, Krystian Prusik, Viktor M.Gazeev, Aleksandr E.Zadov, Nikolai N.Pertsev, Lidia Jezak, Anatoly G.Gurbanov, and Leonid Dubrovinsky (2013). Eltyubyuite, Ca12Fe3+10Si4O32Cl6 – the Fe3+ analogue of wadalite: a new mineral from the Northern Caucasus, Kabardino-Balkaria, Russia. - Eur. J. Mineral., 2013, 25, 221-229.

Frank Gfeller, Dorota Środek, Joachim Kusz, Mateusz Dulski, Viktor Gazeev, Irina Galuskina, Evgeny Galuskin, Thomas Armbruster: Mayenite supergroup, part IV: Crystal structure and Raman investigation of Al-free eltyubyuite from the Shadil-Khokh volcano, Kel’ Plateau, Southern Ossetia, Russia. Eur J Mineral Vol. 27, Nr. 1 (2015) S. 137-143.

IMA group assignments

Other languages

German

Eltyubyuit

English

Eltyubyuite

Russian

Эльтюбюит

CNMNC (IMA)-Number

IMA 2011-022

CNMNC symbol

Symbol

Elt

Locations with GPS information

IDs

GUSID (Global unique identifier short form) r9k1QtyjUE2cXGQxuoLcYA
GUID (Global unique identifier) 4235D9AF-A3DC-4D50-9C5C-6431BA82DC60
Database ID 7070