Belyankinite Mineral Data

Belyankinite Mineral Data +

General Belyankinite Information

Chemical Formula:

Ca1-2(Ti,Zr,Nb)5O12·9(H2O) (?)

Composition:

Molecular Weight = 711.83 gm

Calcium 7.32 % Ca 10.24 % CaO

Zirconium 10.25 % Zr 13.85 % ZrO₂

Titanium 23.54 % Ti 39.28 % TiO₂

Niobium 9.14 % Nb 13.07 % Nb₂O₅

Hydrogen 2.55 % H 22.78 % H₂O

Oxygen 47.20 % O

______ ______

100.00 % 99.21 % = TOTAL OXIDE

Empirical Formula:

Ca_1.3Ti_3.5Zr_0.8Nb_0.7O₁₂·9(H₂O)

Environment:

Replacing murmanite in nepheline syenite pegmatite in an alkalic massif.

IMA Status:

Valid Species (Pre-IMA) 1950

Locality:

Mt. Karnasurt, Lovozero Massif, Kola Peninsula, Russia. Link to MinDat.org Location Data.

Name Origin:

Named for Dmitry Stepanovich Belyankin (1876-1953), prominent Russian mineralogist and petrographer.

Belyankinite Image

Images:

Belyankinite

Comments: Thin beige coating of belyankinite.
Location: Lovozero Massif, Kola Peninsula, Murmansk District, Russia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Belyankinite Crystallography

Crystal System:

Amorphous- No Crystals

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 1.69(1), 3.21(0.8), 2.48(0.6),1.361(0.5), 2.18(0.3), 1.633(0.2),

Physical Properties of Belyankinite

Cleavage:

[???] Perfect

Color:

Yellow, Brownish yellow.

Density:

2.32 - 2.4, Average = 2.36

Diaphaniety:

Transparent to Opaque

Fracture:

Brittle - Uneven - Very brittle fracture producing uneven fragments.

Habit:

Aggregates - Made of numerous individual crystals or clusters.

Habit:

Platy - Sheet forms (e.g. micas).

Hardness:

2-3 - Gypsum-Calcite

Luster:

Vitreous - Greasy

Optical Properties of Belyankinite

Gladstone-Dale:

CI meas= -0.02 (Excellent) - where the CI = (1-KPDmeas/KC)
KPDmeas= 0.3239,KC= 0.3176

Optical Data:

Biaxial (-), a=1.74, b=1.772-1.78, g=1.775-1.78, bire=0.0350-0.0400, 2V(Calc)=0-32, 2V(Meas)=21-25.

Pleochroism (x):

brown or dark brown.

Pleochroism (y):

light brown or yellow brown.

Pleochroism (z):

light brown or light brown.

Calculated Properties of Belyankinite

Electron Density:

r_electron=2.32 gm/cc
note: r_Belyankinite=2.36 gm/cc.

Fermion Index

Fermion Index = 0.04227
Boson Index = 0.95773

Photoelectric:

PE_Belyankinite= 31.37 barns/electron
U=PE_Belyankinite x r_electron= 72.75 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Belyankinite is Not Radioactive

Belyankinite Classification

Dana Class:

8.7.8.1 (8)Multiple Oxides with Nb, Ta, and Ti

(8.7)Dana Type

(8.7.8)Dana Group

8.7.8.1 Belyankinite Ca1-2(Ti,Zr,Nb)5O12·9(H2O)(?) None

8.7.8.2 Manganbelyankinite (Mn,Ca)(Ti,Nb)5O12·9(H2O) None

8.7.8.3 Gerasimovskite (Mn,Ca)(Nb,Ti)5O12·9(H2O)(?) None

Strunz Class:

IV/D.06-10 IV - Oxides

IV/D - Oxides with metal : oxygen = 1:2 (MO2 and related compounds)

IV/D.06 - Belyankinite - Hochelagaite series

IV/D.06-10 Belyankinite Ca1-2(Ti,Zr,Nb)5O12·9(H2O)(?) None

IV/D.06-20 Manganbelyankinite (Mn,Ca)(Ti,Nb)5O12·9(H2O) None

IV/D.06-30 Gerasimovskite (Mn,Ca)(Nb,Ti)5O12·9(H2O)(?) None

IV/D.06-35 Ternovite! (Mg,Ca)Nb4O11-n(H2O)wheren~10 P 2/m,P 2,Pm Mono

IV/D.06-40 Franconite Na2Nb4O11·9(H2O) Unk Mono

IV/D.06-50 Hochelagaite (Ca,Na,Sr)Nb4O11·8(H2O) Unk Mono

Other Belyankinite Information

References:

NAME( AntBidBlaNic3) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic3)

See Also:

Links to other databases for Belyankinite :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 - EUROmin Project 4 -Google Images 5 -Google Scholar 6 -MinDAT 7 -MinMax(Deutsch) 8 -MinMax(English) 9 -Mineralienatlas (Deutsch) 10 -QUT Mineral Atlas 11 -École des Mines de Paris

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Belyankinite

Ca1-2(Ti,Zr,Nb)5O12·9(H2O) (?)
Dana No: 8.7.8.1 Strunz No: IV/D.06-10
Locality:

Notes: