Kukisvumite Mineral Data

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General Kukisvumite Information

Chemical Formula:

Na6ZnTi4Si8O28•4(H2O)

Composition:

Molecular Weight = 1,139.58 gm

Sodium 12.10 % Na 16.32 % Na₂O

Titanium 16.81 % Ti 28.04 % TiO₂

Zinc 5.74 % Zn 7.14 % ZnO

Silicon 19.72 % Si 42.18 % SiO₂

Hydrogen 0.71 % H 6.32 % H₂O

Oxygen 44.93 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Na₆ZnTi₄Si₈O₂₈•4(H₂O)

Environment:

In pegmatite veins cutting ijolite-urtite rocks in a differentiated alkalic massif.

IMA Status:

Approved IMA 1991

Locality:

At the Korovskii apatite mine, Mt. Kukisvumchorr, Khibiny massif, Kola Peninsula, Russia. Link to MinDat.org Location Data.

Name Origin:

Named for the locality.

Name Pronunciation:

Kukisvumite + Pronunciation

Synonym:

IMA1989-052

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Kukisvumite Crystallography

Axial Ratios:

a:b:c =3.3576:1:0.6061

Cell Dimensions:

a = 28.889, b = 8.604, c = 5.215, Z = 2; V = 1,296.25 Den(Calc)= 2.92

Crystal System:

Orthorhombic - DipyramidalH-M Symbol (2/m 2/m 2/m) Space Group: Pccn

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

By Intensity(I/I_o): 3.009(1), 14.49(0.9), 4.815(0.8),

Crystal Structure:

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Merlino S , Pasero M , Ferro O , Zeitschrift fur Kristallographie , 215 (2000) p.352-356, The crystal structure of kukisvumite, Na6ZnTi4(Si2O6)4O4*4H2O, Locality: Kukisvumtschorr deposit, Khibiny alkaline massif, Kola peninsula, Russia

Physical Properties of Kukisvumite

Cleavage:

None

Color:

Colorless, White.

Density:

2.9

Diaphaneity:

Transparent

Hardness:

5.5-6 - Knife Blade-Orthoclase

Luster:

Vitreous (Glassy)

Streak:

white

Optical Properties of Kukisvumite

Gladstone-Dale:

CI meas= 0.026 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= 0.033 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2531,KPDmeas= 0.2548,KC= 0.2617
Ncalc = 1.76

Optical Data:

Biaxial (-), a=1.676, b=1.746, g=1.795, bire=0.1190, 2V(Calc)=76, 2V(Meas)=77.

Calculated Properties of Kukisvumite

Electron Density:

Bulk Density (Electron Density)=2.85 gm/cc
note: Specific Gravity of Kukisvumite =2.90 gm/cc.

Fermion Index:

Fermion Index = 0.03
Boson Index = 0.97

Photoelectric:

PE_Kukisvumite= 6.49 barns/electron
U=PE_Kukisvumite x rElectron Density= 18.51 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Kukisvumite is Not Radioactive

Kukisvumite Classification

Dana Class:

65.01.06.02 (65)Inosilicate Single-Width Unbranched Chains, W=1

(65.01)with chains P=2

(65.01.06)Lorenzenite group

65.01.06.01 Lorenzenite Na2Ti2Si2O9 P bcn 2/m 2/m 2/m

65.01.06.02 Kukisvumite Na6ZnTi4Si8O28•4(H2O) Pccn 2/m 2/m 2/m

65.01.06.03 Lintisite Na3LiTi2Si4O14•2(H2O) C 2/c 2/m

65.01.06.04 Manganokukisvumite! Na6MnTi4Si8O28•4(H2O) Pccn 2/m 2/m 2/m

65.01.06.05 Punkaruaivite! Li{Ti2(OH)2[Si4O11(OH)]}•H2O C 2/c 2/m

Strunz Class:

09.DB.20 09 - SILICATES (Germanates)

09.D - Inosilicates* Structural terminology according to Liebau (1985)

09.DB -Inosilicates with 2-periodic single chains, Si2O6; Pyroxene-related minerals

09.DB.20 Kukisvumite Na6ZnTi4Si8O28•4(H2O) Pccn 2/m 2/m 2/m

09.DB.20 Manganokukisvumite! Na6MnTi4Si8O28•4(H2O) Pccn 2/m 2/m 2/m

Other Kukisvumite Information

References:

NAME( AntBidBlaNic2) PHYS. PROP.(37th List of New Min.,Min. Mag.,1996) OPTIC PROP.(37th List of New Min.,Min. Mag.,19)

See Also:

Links to other databases for Kukisvumite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - Google Images
6 - Google Scholar
7 - Handbook of Mineralogy (MinSocAm)
8 - Handbook of Mineralogy (UofA)
9 - MinDAT
10 - MinMax(Deutsch)
11 - MinMax(English)
12 - Mineralienatlas (Deutsch)
13 - QUT Mineral Atlas
14 - Ruff.Info

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Kukisvumite

Na6ZnTi4Si8O28•4(H2O)
Dana No: 65.01.06.02 Strunz No: 09.DB.20
Locality:

Notes: