Odintsovite Mineral Data

Odintsovite Mineral Data +

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General Odintsovite Information

Chemical Formula:

K2Na4Ca3Ti2Be4Si12O38

Composition:

Molecular Weight = 1,367.20 gm

Potassium 5.72 % K 6.89 % K₂O

Sodium 6.73 % Na 9.07 % Na₂O

Calcium 8.79 % Ca 12.30 % CaO

Titanium 7.00 % Ti 11.68 % TiO₂

Beryllium 2.64 % Be 7.32 % BeO

Silicon 24.65 % Si 52.74 % SiO₂

Oxygen 44.47 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

K₂Na₄Ca₃Ti₂Be₄Si₁₂O₃₈

Environment:

In a vein in alkaline syenite pegmatite and in kalsilite syenite.

IMA Status:

Approved IMA 1995

Locality:

Murunsky alkaline massif, Aldan shield, Russia. Link to MinDat.org Location Data.

Name Origin:

For Prof. M. M. Odintsova (1911-1979), a founder of the Institute of the Earth's Crust, Irkutsk.

Synonym:

ICSD 39874

IMA1994-052

PDF 47-1872

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Odintsovite Crystallography

Axial Ratios:

a:b:c =1.0918:1:2.5668

Cell Dimensions:

a = 14.243, b = 13.045, c = 33.484, Z = 8; V = 6,221.33 Den(Calc)= 2.92

Crystal System:

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

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

By Intensity(I/I_o): 2.53(1), 3.16(1), 3.3(1),

Physical Properties of Odintsovite

Cleavage:

None

Color:

Colorless, Light pink, Slightly brownish pink.

Density:

2.94 - 2.98, Average = 2.96

Diaphaniety:

Transparent

Fracture:

Brittle - Uneven - Very brittle fracture producing uneven fragments.

Habit:

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

Hardness:

5-5.5 - Apatite-Knife Blade

Luster:

Vitreous (Glassy)

Streak:

white

Optical Properties of Odintsovite

Gladstone-Dale:

CI meas= 0.045 (Good) - where the CI = (1-KPDmeas/KC)
CI calc= 0.032 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2225,KPDmeas= 0.2195,KC= 0.2297

Optical Data:

Biaxial (+), a=1.63, b=1.644, g=1.675, bire=0.0450

Calculated Properties of Odintsovite

Electron Density:

r_electron=2.88 gm/cc
note: r_Odintsovite=2.92 gm/cc.

Fermion Index

Fermion Index = 0.04727
Boson Index = 0.95273

Photoelectric:

PE_Odintsovite= 3.88 barns/electron
U=PE_Odintsovite x r_electron= 11.16 barns/cc.

Radioactivity:

GRapi = 81.36 (Gamma Ray American Petroleum Institute Units)

Estimated Radioactivity from Odintsovite - barely detectable

Odintsovite Classification

Dana Class:

61.1.5.1 (61)Cyclosilicate Six-Membered Rings

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

(61.1.5)Dana Group

61.1.5.1 Odintsovite K2Na4Ca3Ti2Be4Si12O38 F ddd 2/m 2/m 2/m

Strunz Class:

VIII/E.20-05 VIII - Silicates

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

VIII/E.20 - Tienshanite - Traskite series

VIII/E.20-05 Odintsovite K2Na4Ca3Ti2Be4Si12O38 F ddd 2/m 2/m 2/m

VIII/E.20-10 Tienshanite BaNa2MnTiB2Si6O20 P 6/m 6/m

VIII/E.20-20 Traskite (Ba,Ca)9(Fe,Mn)2Ti2(SiO3)12(OH,Cl,F)6·6(H2O) P 6m2 6 m2

Other Odintsovite Information

References:

NAME( Dana8) PHYS. PROP.(Am.Min.,Vol.81,p1014,1996) OPTIC PROP.(MinRec)

See Also:

Links to other databases for Odintsovite :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 -Google Images 4 -Google Scholar 5 -MinDAT 6 -MinMax(Deutsch) 7 -MinMax(English) 8 -Mineralienatlas (Deutsch) 9 -QUT Mineral Atlas 10 - WWW-MINCRYST

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Print or Cut-and-Paste your Odintsovite Specimen Label here :

Odintsovite

K2Na4Ca3Ti2Be4Si12O38
Dana No: 61.1.5.1 Strunz No: VIII/E.20-05
Locality:

Notes: