Kazakovite Mineral Data

Kazakovite Mineral Data +

General Kazakovite Information

Chemical Formula:

Na6Mn++TiSi6O18

Composition:

Molecular Weight = 645.92 gm

Potassium 0.61 % K 0.73 % K₂O

Sodium 19.58 % Na 26.39 % Na₂O

Titanium 4.45 % Ti 7.42 % TiO₂

Manganese 3.40 % Mn 4.39 % MnO

Iron 1.73 % Fe 2.22 % FeO

Silicon 25.65 % Si 54.88 % SiO₂

Oxygen 44.59 % O

______ ______

100.00 % 96.04 % = TOTAL OXIDE

Empirical Formula:

Na_5.5K_0.1Mn²⁺_0.4Ti_0.6Fe²⁺_0.2Si_5.9O₁₈

Environment:

In sodalite-rich syenites in an alkalic massif.

IMA Status:

Approved IMA 1974

Locality:

On Mts. Karnasurt and Alluaiv, Lovozero Massif, and in the Khibiny massif, Kola Peninsula, Russia. Link to MinDat.org Location Data.

Name Origin:

For Maria Efimovna Kazakova, analytical chemist who provided the mineral's analysis.

Synonym:

ICSD 200602

PDF 44-1405

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Kazakovite Crystallography

Axial Ratios:

a:c = 1:1.2829

Cell Dimensions:

a = 10.18, c = 13.06, Z = 3; V = 1,172.11 Den(Calc)= 2.75

Crystal System:

Trigonal - Hexagonal ScalenohedralH-M Symbol (3 2/m) Space Group: R 3m

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

By Intensity(I/I_o): 2.6(1), 1.816(0.8), 2.52(0.8),

Crystal Structure:

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Voronkov A A , Pudovkina Z V , Blinov V A , Ilyukhin V V , Pyatenko Y A , Doklady Akademii Nauk SSSR , 245 (1979) p.106-109, Crystal structure of kazakovite Na6Mn{Ti[Si6O18]}

Physical Properties of Kazakovite

Cleavage:

None

Color:

Light yellow.

Density:

2.84

Diaphaniety:

Transparent

Fracture:

Conchoidal - Uneven - Uneven fracture producing small, conchoidal fragments.

Habit:

Granular - Generally occurs as anhedral to subhedral crystals in matrix.

Hardness:

4 - Fluorite

Luster:

Vitreous - Greasy

Streak:

white

Optical Properties of Kazakovite

Gladstone-Dale:

CI meas= -0.085 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= -0.121 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2328,KPDmeas= 0.2254,KC= 0.2077

Optical Data:

Uniaxial (-), e=1.625-1.638, w=1.648-1.65, bire=0.0120-0.0230.

Calculated Properties of Kazakovite

Electron Density:

r_electron=2.79 gm/cc
note: r_Kazakovite=2.84 gm/cc.

Fermion Index

Fermion Index = 0.01831
Boson Index = 0.98169

Photoelectric:

PE_Kazakovite= 3.46 barns/electron
U=PE_Kazakovite x r_electron= 9.67 barns/cc.

Radioactivity:

GRapi = 8.56 (Gamma Ray American Petroleum Institute Units)

Estimated Radioactivity from Kazakovite - barely detectable

Kazakovite Classification

Dana Class:

61.1.2a.2 (61)Cyclosilicate Six-Membered Rings

(61.1)with [Si6O18] rings; possible (OH) and Al substitution

(61.1.2a)Lovozerite group (HEX and HEX-R subgroup)

61.1.2a.1 Lovozerite H4Na2Ca(Zr,Ti)[Si6O18] R 3m 3 2/m

61.1.2a.2 Kazakovite Na6MnTiSi6O18 R 3m 3 2/m

61.1.2a.3 Tisinalite Na3H3(Mn,Ca,Fe)TiSi6(O,OH)18·2(H2O) R 3m 3 2/m

61.1.2a.4 Zirsinalite Na6(Ca,Mn,Fe)Zr[Si6O18] R 3m 3 2/m

61.1.2a.5 Combeite Na2Ca2Si3O9 P 3₂21,P 3₁21 3 2

61.1.2a.6 Kapustinite! Na5.5Mn0.25ZrSi6O16(OH)2 C 2/m 2/m

Strunz Class:

VIII/E.16-20 VIII - Silicates

VIII/E - Cyklosilicates, six rings [Si6O18]12-

VIII/E.16 - Lovozerite group

VIII/E.16-10 Imandrite Na12Ca3Fe2Si12O36 Pnnm 2/m 2/m 2/m

VIII/E.16-20 Kazakovite Na6MnTiSi6O18 R 3m 3 2/m

VIII/E.16-23 Kapustinite! Na5.5Mn0.25ZrSi6O16(OH)2 C 2/m 2/m

VIII/E.16-25 Litvinskite! Na2([],Na,Mn)Zr[Si6O12(OH,O)6] Cm m

VIII/E.16-30 Lovozerite H4Na2Ca(Zr,Ti)[Si6O18] R 3m 3 2/m

VIII/E.16-40 Zirsinalite Na6(Ca,Mn,Fe)Zr[Si6O18] R 3m 3 2/m

VIII/E.16-50 Koashvite Na6(Ca,Mn)(Ti,Fe)Si6O18·(H2O) Pmnb 2/m 2/m 2/m

VIII/E.16-60 Tisinalite Na3H3(Mn,Ca,Fe)TiSi6(O,OH)18·2(H2O) R 3m 3 2/m

VIII/E.16-70 Petarasite Na5Zr2Si6O18(Cl,OH)·2(H2O) P 2₁/m 2/m

Other Kazakovite Information

References:

NAME( AntBidBlaNic2) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic2)

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Kazakovite

Na6Mn++TiSi6O18
Dana No: 61.1.2a.2 Strunz No: VIII/E.16-20
Locality:

Notes: