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Eveslogite

Big Photo

Fersman Gorge, Eveslogchorr Mt, Khibiny Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia
© Pavel M. Kartashov

Show Eveslogite Photos (2)
Formula:
(Na,K,Ca,Sr,Ba)
 
48
 [(Ti,Nb,Mn,Fe
2+
 
)
 
12
Si
 
48
O
 
144
(OH)
 
12
](F,OH,Cl)
 
14
System:MonoclinicColour:light-brown or ...
Hardness:5
Name:Named for the type locality, Mt. Eveslogchorr, Khibiny massif, Kola peninsula, Russia.
This page provides mineralogical data about Eveslogite.

Classification of Eveslogite

IMA status:Approved 2001
Strunz 9th edition ID:9.DG.95
Nickel-Strunz 10th (pending) edition ID:9.DG.95

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

Type Locality:Fersman Gorge, Eveslogchorr Mt, Khibiny Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia
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:
ShcherbakoviteNephelineK FeldsparApatite-(CaF)Eudialyte
BiotiteAstrophyllite

Physical Properties of Eveslogite

Lustre:Vitreous, Silky
Colour:light-brown or yellow-brown
Streak:white
Hardness (Mohs):5
Hardness Data:Measured
Tenacity:Brittle
Cleavage:Perfect
{001}and {010} cleavages
Fracture:Splintery
Density (measured):2.85 g/cm3
Density (calculated):2.93 g/cm3

Crystallography of Eveslogite

Crystal System:Monoclinic
Class (H-M):2/m - Prismatic
Space Group:P2/m (P1 1 2/m) [P2/m] {P1 2/m 1}
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 Volume:V 15,486.03 ų (Calculated from Unit Cell)
Z:4
X-Ray Powder Diffraction:
d-spacingIntensity
12.33 (51)
6.199 (42)
3.127 (65)
3.110 (52)
2.990 (59)
2.940 (45)

Optical Data of Eveslogite

Type:Biaxial (-)
RI values: nα = 1.631(2) nβ = 1.641(2) nγ = 1.647(2)
2V:Calculated: 82°
Maximum Birefringence:δ = 0.016

Chart 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 Eveslogite

Formula:
(Na,K,Ca,Sr,Ba)
 
48
 [(Ti,Nb,Mn,Fe
2+
 
)
 
12
Si
 
48
O
 
144
(OH)
 
12
](F,OH,Cl)
 
14
All elements listed in formula:Ba, Ca, Cl, F, Fe, H, K, Mn, Na, Nb, O, Si, Sr, Ti

Relationship of Eveslogite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
9.DG.05Bustamite
(Mn
2+
 
,Ca)[SiO
 
3
]
9.DG.05Cascandite
Ca(Sc,Fe
3+
 
)[HSi
 
3
O
 
9
]
9.DG.05Ferrobustamite
Ca(Fe
2+
 
,Ca,Mn
2+
 
)[Si
 
2
O
 
6
]
9.DG.05Pectolite
NaCa
 
2
[HSi
 
3
O
 
9
]
9.DG.05Sérandite
Na(Mn
2+
 
,Ca)
 
2
[HSi
 
3
O
 
9
]
9.DG.05Wollastonite
Ca[SiO
 
3
]
9.DG.05Wollastonite-1A
CaSiO
 
3
9.DG.10Clinotobermorite
Ca
 
5
[Si
 
3
O
 
8
(OH)
 
2
]2.4H
 
2
O - Ca
 
5
[Si
 
6
O17]·5H
 
2
O
9.DG.10Plombièrite
Ca
 
5
Si
 
6
O
 
16
(OH)
 
2
·7H
 
2
O
9.DG.10Riversideite
Ca
 
5
Si
 
6
O
 
16
(OH)
 
2
·2H
 
2
O
9.DG.10Tobermorite
Ca
 
5
Si
 
6
(O,OH)
 
18
·5H
 
2
O
9.DG.15Foshagite
Ca
 
4
[(OH)
 
2
|Si
 
3
O
 
9
]
9.DG.20Jennite
Ca
 
9
H
 
2
Si
 
6
O
 
18
(OH)
 
8
·6H
 
2
O
9.DG.25Paraumbite
K
 
3
Zr
 
2
H(Si
 
3
O
 
9
)
 
2
·nH
 
2
O
9.DG.25Umbite
K
 
2
(Zr,Ti)Si
 
3
O
 
9
·H
 
2
O
9.DG.30Sørensenite
Na
 
4
SnBe
 
2
Si
 
6
O
 
16
(OH)
 
4
9.DG.35Xonotlite
Ca
 
6
Si
 
6
O
 
17
(OH)
 
2
9.DG.40Hillebrandite
Ca
 
2
[(OH)
 
2
|SiO
 
3
]
9.DG.45Zorite
Na
 
2
Ti(Si,Al)
 
3
O
 
9
·nH
 
2
O
9.DG.45Chivruaiite
Ca
 
3
Ti
 
5
[(Si
 
6
O
 
17
)
 
2
|O(OH)
 
4
]·14H
 
2
O
9.DG.50Haineaultite
(Na,Ca)
 
5
Ca(Ti,Nb)
 
5
(OH,F)
 
4
|Si
 
6
O
 
17
]
 
2
 · 5H
 
2
O
9.DG.55Epididymite
Na
 
2
Be
 
2
Si
 
6
O
 
15
·H
 
2
O
9.DG.60Eudidymite
Na
 
2
Be
 
2
Si
 
6
O
 
15
·H
 
2
O
9.DG.65Elpidite
Na
 
2
ZrSi
 
6
O
 
15
·3H
 
2
O
9.DG.70Fenaksite
(K,Na)
 
4
(Fe,Mn)
 
2
(Si
 
4
O
 
10
)
 
2
(OH,F)
9.DG.70Litidionite
CuNaKSi
 
4
O
 
10
9.DG.70Manaksite
KNaMnSi
 
4
O
 
10
9.DG.75Tinaksite
K
 
2
Na(Ca,Mn
2+
 
)
 
2
Ti[O|Si
 
7
O
 
18
(OH)]
9.DG.75Tokkoite
K
 
2
Ca
 
4
Si
 
7
O
 
17
(O,OH,F)
 
4
9.DG.75Senkevichite
CsKNaCa
 
2
Ti[O|Si
 
7
O
 
18
(OH)]
9.DG.80Canasite
Ca
 
5
Na
 
4
K
 
2
(Si
 
12
O
 
30
(OH,F)
 
4
9.DG.80Fluorcanasite
K
 
3
Na
 
3
Ca
 
5
Si
 
12
O
 
30
F
 
4
·H
 
2
O
9.DG.85Miserite
K(Ca,Ce)
 
4
Si
 
5
O
 
13
(OH)
 
3
9.DG.90Charoite
(K,Na)
 
5
(Ca,Ba,Sr)
 
8
(Si
 
6
O
 
15
)
 
2
(Si
 
6
O
 
16
)(OH,F)·H
 
2
O
9.DG.90Frankamenite
K
 
3
Na
 
3
Ca
 
5
(Si
 
12
O
 
30
)[F,(OH)]
 
4
·H
 
2
O
9.DG.95Yuksporite
(K,Ba)NaCa
 
2
(Si,Ti)
 
4
O
 
11
(F,OH)·H
 
2
O

Other Names for Eveslogite

Synonyms:
IMA2001-023
Other Languages:

Other Information

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

References for Eveslogite

Reference List: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).

Articles/Blogs about Eveslogite

Internet Links for Eveslogite

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    Localities for Eveslogite

    (TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
    Russia
     
    • Northern Region
      • Murmanskaja Oblast'
        • Kola Peninsula
          • 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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