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Belyankinite

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Karnasurt Mt, Lovozero Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia
© B. Otter

Show Belyankinite Photos (2)
Formula:
Ca
 
1-2
(Ti,Zr,Nb)
 
5
O
 
12
 · 9H
 
2
O (?)
Colour:White, light yellow to ...Lustre:Vitreous, Greasy, Pearly
Hardness:2 - 3
Name:For Dmitry Stepanovich Belyankin (1876-1953), prominent Russian mineralogist and petrographer.
This page provides mineralogical data about Belyankinite.

Classification of Belyankinite

IMA status:Questionable/Doubtful
Strunz 8th edition ID:4/D.06-10
Nickel-Strunz 10th (pending) edition ID:4.FM.25

4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
F : Hydroxides (without V or U)
M : Hydroxides with H2O +- (OH); unclassified
Dana 8th edition ID:8.7.8.1

8 : MULTIPLE OXIDES CONTAINING NIOBIUM,TANTALUM OR TITANIUM
7 : Miscellaneous
Hey's CIM Ref.:18.1.12

18 : Niobates and Tantalates
1 : Niobates and tantalates containing neither rare earths nor U
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Type Occurrence of Belyankinite

Type Locality:Medvzh'ya Berloga pegmatite (Pegmatite No. 13), Tyul'bnyunuai River Valley, Lovozero Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia
Geological Setting of type material:In nepheline syenite in an alkalic massif, included in aegirine and microcline
Associated Minerals at type locality:
Zeolite GroupNephelineMicroclineLorenzeniteLamprophyllite
EudialyteAegirine

Physical Properties of Belyankinite

Lustre:Vitreous, Greasy, Pearly
Diaphaneity (Transparency):Opaque
Colour:White, light yellow to brownish-yellow; black when manganese-rich
Hardness (Mohs):2 - 3
Tenacity:Brittle
Cleavage:Perfect
in one direction, parallel to the plates
Fracture:Irregular/Uneven
Density (measured):2.32 - 2.4 g/cm3

Crystallography of Belyankinite

Morphology:In platy aggregates or massive, to 20 cm
X-Ray Powder Diffraction:
d-spacingIntensity
1.690 (10)
3.21 (8)
2.48 (6)
1.361 (5)
2.90 (3)
2.18 (3)
Comments:Recorded on type material, after heating to 900 °C

Optical Data of Belyankinite

Type:Biaxial (-)
RI values: nα = 1.740 nβ = 1.772 - 1.778 nγ = 1.775 - 1.780
2V:Measured: 21° to 25°
Maximum Birefringence:δ = 0.035 - 0.040

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Very High
Dispersion:r > v, moderate
Pleochroism:Visible
Comments:X = brown to dark brown, Y = light brown to yellow-brown, Z = light brown; Orientation: X = a, Y = b, Z = c

Chemical Properties of Belyankinite

Formula:
Ca
 
1-2
(Ti,Zr,Nb)
 
5
O
 
12
 · 9H
 
2
O (?)
Essential elements:Ca, H, O, Ti
All elements listed in formula:Ca, H, Nb, O, Ti, Zr
Analytical Data:Chemical analysis of material from Kola Peninsula, Russia
(Nb,Ta)2O5  (7.16)
SiO2        (3.96)
TiO2       (48.76)
ZrO2        (6.64)
Al2O3       (0.46)
CaO         (6.72)
Na2O        (0.55)
H2O+        (8.35)
H2O-       (17.21)

sum         99.81 wt.-%
Empirical Formula:
Al,Fe,K,Mn,Mg,Na,Si,Ta

Relationship of Belyankinite to other Species

Series:Forms a series with Manganbelyankinite (see here)
Related Minerals - Nickel-Strunz Grouping):

- +
4.FM.15Franconite
Na
 
2
Nb
 
4
O
 
11
·9H
 
2
O
4.FM.15Hochelagaite
(Ca,Na,Sr)(Nb,Ti,Si,Al)
 
4
O
 
11
·8H
 
2
O
4.FM.15Ternovite
(Mg,Ca)Nb
 
4
O
 
11
·nH
 
2
O
4.FM.25Gerasimovskite
(Mn,Ca)(Nb,Ti)
 
5
O
 
12
·9H
 
2
O
4.FM.25Manganbelyankinite
(Mn,Ca)(Ti,Nb)
 
5
O
 
12
·9H
 
2
O
4.FM.30Silhydrite
3SiO
 
2
·H
 
2
O
4.FM.35Cuzticite
Fe
3+
2
[TeO
 
6
] · 3H
 
2
O
4.FM.40Cyanophyllite
(Cu,Al)
 
3
[(OH)
 
6
|Sb
5+
 
(OH)
 
6
]
Related Minerals - Hey's Index Grouping:

- +
18.1.1Lithiotantite
Li(Ta,Nb)
 
3
O
 
8
18.1.2Lueshite
NaNbO
 
3
18.1.3Natroniobite
NaNbO
 
3
18.1.4Franconite
Na
 
2
Nb
 
4
O
 
11
·9H
 
2
O
18.1.5Natrotantite
Na
 
2
Ta
 
4
O
 
11
18.1.6Irtyshite
Na
 
2
(Ta,Nb)
 
4
O
 
11
18.1.7Rankamaite
(Na,K,Pb,Li)
 
3
(Ta,Nb,Al)
 
11
(O,OH)
 
30
18.1.8Kalipyrochlore
(K,Sr)
 
2-x
Nb
 
2
O
 
6
(O,OH)·nH
 
2
O
18.1.9Calciotantite
CaTa
 
4
O
 
11
18.1.10Rynersonite
Ca(Ta,Nb)
 
2
O
 
6
18.1.11Microlite
(Ca,Na)
 
2
Ta
 
2
O
 
6
(O,OH,F)
18.1.13Latrappite
(Ca,Na)(Nb,Ti,Fe)O
 
3
18.1.14Hochelagaite
(Ca,Na,Sr)(Nb,Ti,Si,Al)
 
4
O
 
11
·8H
 
2
O
18.1.15Bariomicrolite
Ba(Ta,Nb)
 
2
(O,OH)
 
7
18.1.16Parabariomicrolite
BaTa
 
4
O
 
10
(OH)
 
2
·2H
 
2
O
18.1.17Bariopyrochlore
(Ba,Sr)
 
2-x
(Nb,Ti)
 
2
(O,OH)
 
7
18.1.18Alumotantite
AlTaO
 
4
18.1.19Simpsonite
Al
 
4
(Ta,Nb)
 
3
O
 
13
(OH,F)
18.1.20Sosedkoite
(K,Na)
 
5
Al
 
2
(Ta,Nb)
 
22
O
 
60
18.1.21Thoreaulite
SnTa
 
2
O
 
6
18.1.22Stannomicrolite
(Sn,Fe,Mn)
 
2
(Ta,Nb,Sn)
 
2
(O,OH)
 
7
18.1.23Foordite
(Sn,Pb)(Nb,Ta)
 
2
O
 
6
18.1.24Changbaiite
PbNb
 
2
O
 
6
18.1.25Plumbopyrochlore
(Pb,Ca,Y,U)
 
2-x
(Nb,Ta,Ti)
 
2
O
 
6
(OH,O)
18.1.26Plumbomicrolite
(Pb,Ca,U)
 
2-x
(Ta,Nb,Sn)
 
2
O
 
6
(O,[])
18.1.27Stibiocolumbite
Sb(Nb,Ta)O
 
4
18.1.28Stibiotantalite
Sb(Ta,Nb)O
 
4
18.1.29Natrobistantite
(Na,Cs)Bi(Ta,Nb,Sb)
 
4
O
 
12
18.1.30Cesplumtantite
(Cs,Na)
 
2
(Pb,Sb
3+
 
)
 
3
Ta
 
8
O
 
24
18.1.31Stibiomicrolite
(Sb,Ca,Na)
 
2
(Ta,Nb)
 
2
O
 
7
18.1.32Cesstibtantite
(Cs,Na)SbTa
 
4
O
 
12
18.1.33 Stibobetafite
(Ca,Sb)
 
2
(Ti,Nb,Ta)
 
2
(O,OH)
 
7
18.1.34Bismutotantalite
Bi(Ta,Nb)O
 
4
18.1.35Bismutomicrolite
(Bi,Ca)(Ta,Nb)
 
2
O
 
6
(OH)
18.1.36Tantalite-(Mn)
MnTa
 
2
O
 
6
18.1.37Gerasimovskite
(Mn,Ca)(Nb,Ti)
 
5
O
 
12
·9H
 
2
O
18.1.38Tapiolite-(Mn)
(Mn,Fe)(Ta,Nb)
 
2
O
 
6
18.1.39Columbite-(Mn)
(Mn,Fe)(Nb,Ta)
 
2
O
 
6
18.1.40Wodginite
Mn(Sn,Ta)Ta
 
2
O
 
8
18.1.41Ixiolite
(Ta,Nb,Sn,Fe,Mn)
 
4
O
 
8
18.1.42Columbite-(Fe)
FeNb
 
2
O
 
6
18.1.43Tantalite-(Fe)
FeTa
 
2
O
 
6
18.1.44Columbite
(Fe,Mn)(Nb,Ta)
 
2
O
 
6
18.1.45Tantalite
(Fe,Mn)(Ta,Nb)
 
2
O
 
6
18.1.46Tapiolite
(Fe,Mn)(Ta,Nb)
 
2
O
 
6
18.1.47Tapiolite-(Fe)
(Fe,Mn)(Ta,Nb)
 
2
O
 
6
18.1.48Columbite-(Mg)
(Mg,Fe,Mn)(Nb,Ta)
 
2
O
 
6
18.1.50Strüverite
(Ti,Ta,Fe)O
 
2
18.1.51 Staringite
(Fe,Mn)
 
x
(Ta,Nb)
 
2x
Sn
 
6-3x
O
 
12

Other Names for Belyankinite

Other Languages:
German:Belijankinit
Belyankinit
Spanish:Belyankinita

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 Belyankinite

Reference List:Gerasimovskii, V. I. and Kazakova, M. E. (1950): Belyankinite - a new mineral. Doklady Akademii Nauk SSSR 71, 925-927 (in Russian). - American Mineralogist (1952), 37, 882 (abstract).

Semenov, E. I. (1957): Oxides and hydroxides of titanium and niobium in the Lovozero alkalic massif. Inst. mineral., geokhim., and crystallokhim. redkikh elementov, Trudy 1, 41-59 (in Russian). - American Mineralogist (1958), 43, 1220-1221 (abstract).

Vlasov, K. A., Kuz'menko, M. V. and Es'kova, E. M. (1966): The Lovozero alkali massif. Akad. Nauk SSSR, 390-392 (in English).

Anthony, J. W. et al. (1997): Handbook of Mineralogy, Vol. 3, 51.

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    Localities for Belyankinite

    (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
    		www.koeln.netsurf.de/~w.steffens/khib.htm
          • Lovozero Massif
    		[World of Stones 95:5-6, p64]
            • Tyul'bnyunuai River Valley
    		Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
    Mineral and/or Locality
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    Copyright © Jolyon Ralph and Ida Chau 1993-2009. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them.Further information contact the Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of hundreds of members and supporters. If you would like to add information to improve the quality of our database, then click here to register. Current server date and time: 10th Nov 2009 00:46:53