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Eltyubyuite

A valid IMA mineral species
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08915050017272472141691.jpg
Eltyubyuite, etc.

Xenolith no. 1, Lakargi Mountain, Upper Chegem volcanic caldera, Chegemsky District, Kabardino-Balkaria, Russia
08915050017272472141691.jpg
Eltyubyuite, etc.

Xenolith no. 1, Lakargi Mountain, Upper Chegem volcanic caldera, Chegemsky District, Kabardino-Balkaria, Russia
06591070017272335047398.jpg
Eltyubyuite, etc.

Xenolith no. 1, Lakargi Mountain, Upper Chegem volcanic caldera, Chegemsky District, Kabardino-Balkaria, Russia
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About EltyubyuiteHide

09380330017272472151488.jpg
Eltyubyu, Russia
Formula:
Ca12Fe3+10Si4O32Cl6
Colour:
Yellow to light brown and brown
Specific Gravity:
3.349 (Calculated)
Crystal System:
Isometric
Member of:
Wadalite Group
Name:
After the Balkarian village Eltyubyu, which is situated near the type locality.
Fe3+ analogue of wadalite. Isostructural with mayenite (chlormayenite).

Fe and Si are disordered over the tetrahedral T1 and T2 sites (Al-free material from Shadil-Khokh volcano).


Unique IdentifiersHide

Mindat ID:
42818
Long-form identifier:
mindat:1:1:42818:7

IMA Classification of EltyubyuiteHide

Classification of EltyubyuiteHide

Strunz-mindat (2026):
9.AD.25

9 : SILICATES (Germanates)
A : Nesosilicates
D : Nesosilicates without additional anions; cations in [6] and/or greater coordination

Mineral SymbolsHide

As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.

SymbolSourceReference for Standard
EltIMA–CNMNCWarr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43

Physical Properties of EltyubyuiteHide

Colour:
Yellow to light brown and brown
Comment:
in transmitted light under the optical microscope
Density:
3.349 g/cm3 (Calculated)

Optical Data of EltyubyuiteHide

Type:
Isotropic
RI values:
n = 1.85
Surface Relief:
Very High

Chemistry of EltyubyuiteHide

Mindat Formula:
Ca12Fe3+10Si4O32Cl6
Element Weights:
Element% weight
Fe29.761 %
O27.285 %
Ca25.630 %
Cl11.336 %
Si5.987 %

Calculated from ideal end-member formula.
Elements listed:
Ca, Cl, Fe, O, Si - search for minerals with similar chemistry

Crystallography of EltyubyuiteHide

Crystal System:
Isometric
Class (H-M):
43m - Hextetrahedral
Space Group:
I43d
Cell Parameters:
a = 12.20(3) Å
Unit Cell V:
1815.85 ų
Z:
2
Comment:
Shadil-Khohk volcano material: a=12.2150(2), V=1822.55(6)

X-Ray Powder DiffractionHide

Geological EnvironmentHide

Paragenetic Mode(s):
Paragenetic ModeEarliest Age (Ga)
Stage 7: Great Oxidation Event<2.4
45b : [Other oxidized fumarolic minerals]
Stage 10a: Neoproterozoic oxygenation/terrestrial biosphere<0.6
51 : Pyrometamorphic minerals (see also #54 and #56)<0.36
Stage 10b: Anthropogenic minerals<10 Ka
54 : Coal and other mine fire minerals (see also #51 and #56)
Geological Setting:
Shadil-Khohk volcano: contact zone of an altered carbonate-silicate xenolith within plagiodacites

Type Occurrence of EltyubyuiteHide

Synonyms of EltyubyuiteHide

Other Language Names for EltyubyuiteHide

Relationship of Eltyubyuite to other SpeciesHide

Member of:
Wadalite Group
Other Members of Wadalite Group:
AdrianiteCa12(Al4Mg3Si7)O32Cl6Iso. 43m : I43d
Wadalite(Ca,Mg)6(Al,Fe3+)4((Si,Al)O4)3O4Cl3Iso. 43m : I43d

Common AssociatesHide

Associations Based on Photo Data:
1 photo of Eltyubyuite associated with RondorfiteCa8Mg(SiO4)4Cl2
1 photo of Eltyubyuite associated with LarniteCa2SiO4
1 photo of Eltyubyuite associated with 'Hibschite'Ca3Al2(SiO4)3-x(OH)4x

Related Minerals - Strunz-mindat GroupingHide

9.AD.AdrianiteCa12(Al4Mg3Si7)O32Cl6Iso. 43m : I43d
9.AD.05LarniteCa2SiO4Mon. 2/m
9.AD.10Calcio-olivineCa2SiO4Orth. mmm(2/m2/m2/m)
9.AD.15MerwiniteCa3Mg(SiO4)2Mon. 2/m : P21/b
9.AD.20BredigiteCa7Mg(SiO4)4Orth. mm2 : Pnn2
9.AD.25MidbariteCa3Mg2(V5+2Si)O12Iso. m3m(4/m32/m) : Ia3d
9.AD.25Menzerite-(Y)(Y2Ca)Mg2(SiO4)3Iso. m3m(4/m32/m) : Ia3d
9.AD.25UvaroviteCa3Cr3+2(SiO4)3Iso. m3m(4/m32/m) : Ia3d
9.AD.25EringaiteCa3Sc2(SiO4)3Iso. m3m(4/m32/m) : Ia3d
9.AD.25HenritermieriteCa3Mn3+2(SiO4)2[◻(OH)4]Tet. 4/mmm(4/m2/m2/m) : I41/acd
9.AD.25 va'Hydrougrandite'(Ca,Mg,Fe2+)3(Fe3+,Al)2[(OH)4(SiO4)2]Iso.
9.AD.25CalderiteMn2+3Fe3+2(SiO4)3Iso. m3m(4/m32/m) : Ia3d
9.AD.25NikmelnikoviteCa12(Fe2+Fe3+3Al3◻)[SiO4]6[◻(OH)4]5◻4Trig. 3 : R3
9.AD.25HutcheoniteCa3Ti2(SiO4)(AlO4)2Iso. m3m(4/m32/m) : Ia3d
9.AD.25Wadalite(Ca,Mg)6(Al,Fe3+)4((Si,Al)O4)3O4Cl3Iso. 43m : I43d
9.AD.25RubiniteCa3Ti3+2(SiO4)3Iso. m3m(4/m32/m) : Ia3d
9.AD.25KerimasiteCa3Zr2(SiO4)(Fe3+O4)2Iso. m3m(4/m32/m) : Ia3d
9.AD.25HoltstamiteCa3Al2(SiO4)2[◻(OH)4]Tet. 4/mmm(4/m2/m2/m) : I41/acd
9.AD.25SpessartineMn2+3Al2(SiO4)3Iso. m3m(4/m32/m) : Ia3d
9.AD.25ToturiteCa3Sn2(SiO4)(Fe3+O4)2Iso. m3m(4/m32/m) : Ia3d
9.AD.25KimzeyiteCa3Zr2(SiO4)(AlO4)2Iso. m3m(4/m32/m) : Ia3d
9.AD.25'Khoharite'Mg3Fe3+2(SiO4)3
9.AD.25IrinarassiteCa3Sn2(SiO4)(AlO4)2Iso. m3m(4/m32/m) : Ia3d
9.AD.25KnorringiteMg3Cr3+2(SiO4)3Iso. m3m(4/m32/m) : Ia3d
9.AD.25GoldmaniteCa3V3+2(SiO4)3Iso. m3m(4/m32/m) : Ia3d
9.AD.25'Blythite'Mn2+3Mn3+2[SiO4]3
9.AD.25'Skiagite'Fe2+3Fe3+2[SiO4]3
9.AD.25'UM1984-37-SiO:CrMn'Mn2+3Cr3+2(SiO4)3
9.AD.25AlmandineFe2+3Al2(SiO4)3Iso. m3m(4/m32/m) : Ia3d
9.AD.25 va'Yamatoite'(Mn2+,Ca)3(V3+,Al)2(SiO4)3Iso.
9.AD.25MomoiiteMn2+3V3+2(SiO4)3Iso. m3m(4/m32/m) : Ia3d
9.AD.25GrossularCa3Al2(SiO4)3Iso. m3m(4/m32/m) : Ia3d
9.AD.25AndraditeCa3Fe3+2(SiO4)3Iso. m3m(4/m32/m) : Ia3d
9.AD.25MorimotoiteCa3(TiFe2+)(SiO4)3Iso. m3m(4/m32/m) : Ia3d
9.AD.25MajoriteMg3(MgSi)(SiO4)3Iso. m3m(4/m32/m) : Ia3d
9.AD.25PyropeMg3Al2(SiO4)3Iso. m3m(4/m32/m) : Ia3d
9.AD.25SchorlomiteCa3Ti2(SiO4)(Fe3+O4)2Iso. m3m(4/m32/m) : Ia3d
9.AD.30HafnonHf(SiO4)Tet. 4/mmm(4/m2/m2/m) : I41/amd
9.AD.30ZirconZr(SiO4)Tet. 4/mmm(4/m2/m2/m) : I41/amd
9.AD.30CoffiniteU(SiO4) · nH2OTet. 4/mmm(4/m2/m2/m) : I41/amd
9.AD.30ThoriteTh(SiO4)Tet. 4/mmm(4/m2/m2/m) : I41/amd
9.AD.30 va'Auerlite'near Th(Si,P)O4
9.AD.30Stetindite-(Ce)Ce4+SiO4Tet. 4/mmm(4/m2/m2/m) : I41/amd
9.AD.35'Tombarthite-(Y)'Y4(Si,H4)4O12-x(OH)4+2xMon.
9.AD.35HuttoniteThSiO4Mon. 2/m
9.AD.40EulytineBi4(SiO4)3Iso. 43m : I43d
9.AD.45ReiditeZr(SiO4)Tet. 4/m : I41/a
9.AD.55JeffbeniteMg3Al2Si3O12Tet. 42m : I42d

Other InformationHide

Notes:
Raman bands of the Shadil-Khokh volcano material [cm-1]: 959 & 901 (Si–O stretching); 783, 705, 450, 307 (FeO45- vibration)
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

Internet Links for EltyubyuiteHide

References for EltyubyuiteHide

Localities for EltyubyuiteHide

Showing 6 localities.

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.
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Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for references and further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (e.g. from pseudomorphs).

All localities listed without proper references should be considered as questionable.
Czech Republic
 
  • South Moravian Region
    • Brno-Country District
      • Oslavany
Hršelová et al. (2013)
Georgia
 
  • South Ossetia
    • Kel’ volcanic area
Galuskin et al. (2013)
Germany
 
  • Rhineland-Palatinate
    • Mayen-Koblenz
      • Vordereifel
Galuskin et al. (2013)
Russia
 
  • Chelyabinsk Oblast
Sharygin (2015)
  • Kabardino-Balkaria
    • Chegemsky District
Galuskin et al. (2013)
        • Lakargi Mountain
Williams et al. (2011) +1 other reference
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