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Eveslogite

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Formula:
(Na,K,Ca,Sr,Ba)48 [(Ti,Nb,Mn,Fe2+)12Si48O144(OH)12](F,OH,Cl)14
Colour:
light-brown or yellow-brown
Lustre:
Vitreous, Silky
Hardness:
5
Specific Gravity:
2.85
Crystal System:
Monoclinic
Name:
Named for the type locality, Mt. Eveslogchorr, Khibiny massif, Kola peninsula, Russia.
This page provides mineralogical data about Eveslogite.


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Classification of EveslogiteHide

Approved
Approval Year:
2001
9.DG.97

9 : SILICATES (Germanates)
D : Inosilicates
G : Inosilicates with 3-periodic single and multiple chains

Physical Properties of EveslogiteHide

Vitreous, Silky
Colour:
light-brown or yellow-brown
Streak:
white
Hardness:
Hardness Data:
Measured
Tenacity:
Brittle
Cleavage:
Perfect
{001}and {010} cleavages
Fracture:
Splintery
Density:
2.85 g/cm3 (Measured)    2.93 g/cm3 (Calculated)

Optical Data of EveslogiteHide

Type:
Biaxial (-)
RI values:
nα = 1.631(2) nβ = 1.641(2) nγ = 1.647(2)
2V:
Calculated: 82°
Max Birefringence:
δ = 0.016
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Moderate
Pleochroism:
Visible
Comments:
Y and Z = pale yellow, X = colorless

Chemical Properties of EveslogiteHide

Formula:
(Na,K,Ca,Sr,Ba)48 [(Ti,Nb,Mn,Fe2+)12Si48O144(OH)12](F,OH,Cl)14
IMA Formula:
(Ca,K,Na,Sr,Ba)48(Ti,Nb,Fe,Mn)12(OH)12Si48O144(OH,F,Cl)14
Elements listed:

Crystallography of EveslogiteHide

Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
P2/m
Cell Parameters:
a = 14.069(3) Å, b = 24.937(5) Å, c = 44.31(2) Å
β = 95.02(4)°
Ratio:
a:b:c = 0.564 : 1 : 1.777
Unit Cell V:
15,486.03 ų (Calculated from Unit Cell)
Z:
4

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
12.33 (51)
6.199 (42)
3.127 (65)
3.110 (52)
2.990 (59)
2.940 (45)
2.835 (100)

Type Occurrence of EveslogiteHide

General Appearance of Type Material:
Fibrous grains, up to 0.05 mm across and 5 cm long.
Place of Conservation of Type Material:
Fersman Mineraloigcal Museum, Moscow, Russia
Geological Setting of Type Material:
A monomineralic veinlet that cuts poikilitic nepheline syenite.
Associated Minerals at Type Locality:

Synonyms of EveslogiteHide

Other Language Names for EveslogiteHide

Simplified Chinese:埃弗斯罗格石
Traditional Chinese:埃弗斯羅格石

Common AssociatesHide

Associated Minerals Based on Photo Data:
Titanian Biotite2 photos of Eveslogite associated with Titanian Biotite on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

9.DG.05BustamiteCaMn2+(Si2O6)Tric. 1 : P1
9.DG.05FerrobustamiteCaFe2+(Si2O6)Tric.
9.DG.05PectoliteNaCa2Si3O8(OH)Tric. 1 : P1
9.DG.05SeranditeNaMn2+2Si3O8(OH)Tric. 1 : P1
9.DG.05WollastoniteCaSiO3Tric. 1 : P1
9.DG.05Wollastonite-1ACaSiO3Tric.
9.DG.07CascanditeCa(Sc,Fe3+)(HSi3O9)Tric.
9.DG.08Plombièrite[Ca4Si6O16(OH)2 · 2H2O]·(Ca·5H2O)Orth.
9.DG.10Clinotobermorite[Ca4Si6O17 · 2H2O]·(Ca·3H2O)Mon.
9.DG.10RiversideiteCa5(HSi3O9)2 · 2H2OOrth.
9.DG.10Tobermorite[Ca4Si6O17 · 2H2O]·(Ca·3H2O)Orth.
9.DG.15FoshagiteCa4(Si3O9)(OH)2Tric.
9.DG.20JenniteCa9(Si3O9)2(OH)8 · 8H2OTric.
9.DG.25ParaumbiteK3Zr2H(Si3O9)2 · nH2OOrth.
9.DG.25UmbiteK2(Zr,Ti)Si3O9 · H2OOrth.
9.DG.30SørenseniteNa4SnBe2Si6O16(OH)4Mon. 2/m : B2/b
9.DG.35XonotliteCa6(Si6O17)(OH)2Mon. 2/m
9.DG.40HillebranditeCa2(SiO3)(OH)2Orth. mmm (2/m 2/m 2/m) : Cmcm
9.DG.45ZoriteNa8(Ti,Nb)5(Si6O17)2(OH,O)5 · 14H2OOrth.
9.DG.45ChivruaiiteCa4(Ti,Nb)5(Si6O17)2(OH,O)5 · 13-14H2OOrth. mmm (2/m 2/m 2/m) : Cmmm
9.DG.50Haineaultite(Na,Ca)5Ca(Ti,Nb)5(Si6O17)2(OH,F)8 · 5H2OOrth. 2 2 2 : C2 2 2
9.DG.55EpididymiteNa2Be2Si6O15 · H2OOrth. mmm (2/m 2/m 2/m) : Pnma
9.DG.60EudidymiteNa2Be2Si6O15 · H2OMon. 2/m : B2/b
9.DG.65ElpiditeNa2ZrSi6O15 · 3H2OOrth.
9.DG.70Fenaksite(K,Na)4(Fe,Mn)2(Si4O10)2(OH,F)Tric.
9.DG.70LitidioniteCuNaKSi4O10Tric.
9.DG.70ManaksiteKNaMnSi4O10Tric.
9.DG.75TinaksiteK2Na(Ca,Mn2+)2Ti[O|Si7O18(OH)]Tric.
9.DG.75TokkoiteK2Ca4[Si7O18(OH)](OH,F)Tric.
9.DG.75SenkevichiteCsKNaCa2Ti[O|Si7O18(OH)]Tric. 1 : P1
9.DG.80CanasiteK3Na3Ca5Si12O30(OH)4
9.DG.80FluorcanasiteK3Na3Ca5Si12O30F4 · H2OMon. m : Bm
9.DG.85MiseriteK1.5-x(Ca,Y,REE)5(Si6O15)(Si2O7)(OH,F)2 · yH2OTric.
9.DG.90FrankameniteK3Na3Ca5(Si12O30)(F,OH)4 · H2OTric.
9.DG.92Charoite(K,Sr)15-16(Ca,Na)32[Si6O11(O,OH)6]2[Si12O18(O,OH)12]2[Si17O25(O,OH)18]2(OH,F)4 · ~3H2OMon. 2/m : P21/m
9.DG.95YuksporiteK4(Ca,Na)14(Sr,Ba)2(◻,Mn,Fe)(Ti,Nb)4(O,OH)4(Si6O17)2(Si2O7)3(H2O,OH)3Orth.

Other InformationHide

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for EveslogiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Men'shikov Yu.P., Khomyakov A.P., Ferraris G. et al. (2003) Eveslogite, (Ca,K,Na,Sr,Ba)48[(Ti,Nb,Mn,Fe")12(OH)12Si48O144](F,OH,Cl)14, a new mineral from the Khibiny alkaline massif, Kola peninsula, Russia. - Zapiski VMO, 132(1), 59-67 (in Russian).
American Mineralogist: 89, 249 (2004) (abstract).

Internet Links for EveslogiteHide

Localities for EveslogiteHide

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.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for 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 (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Russia (TL)
 
  • Northern Region
    • Murmanskaya Oblast'
      • Khibiny Massif
        • Eveslogchorr Mt
Men'shikov Yu.P., Khomyakov A.P., Ferraris G. et al. (2003) Eveslogite, (Ca,K,Na,Sr,Ba)48[(Ti,Nb,Mn,Fe")12(OH)12Si48O144](F,OH,Cl)14, a new mineral from the Khibiny alkaline massif, Kola peninsula, Russia, - Zapiski VMO, 132(1), 59-67 (in Russ.); Pekov, I. V. (1998): Minerals first discovered on the territory of the former Soviet Union. Ocean Pictures Ltd., Moscow, 369 pp.
Mineral and/or Locality  
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