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Korobitsynite Mineral Data

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General Korobitsynite Information

Help on Chemical  Formula: Chemical Formula: Na3(Ti,Nb)2[Si4O12](OH,O)2•3-4(H2O)
Help on Composition: Composition: Molecular Weight = 578.44 gm
   Sodium    10.33 %  Na   13.93 % Na2O
   Titanium  12.42 %  Ti   20.71 % TiO2
   Niobium    8.03 %  Nb   11.49 % Nb2O5
   Silicon   19.42 %  Si   41.55 % SiO2
   Hydrogen   1.39 %  H    12.46 % H2O
   Oxygen    48.40 %  O
            ______        ______ 
            100.00 %      100.14 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Na2.6Ti1.5Nb0.5Si4O13(OH)•3.5(H2O)
Help on Environment: Environment: Found in hydrothermally affected agpaitic rocks. The Ti-dominant analog of nenadkevichite. It forms epitaxial overgrowths on elpidite crystals.
Help on IMA Status: IMA Status: Approved IMA 1999 (Dana # Added)
Help on Locality: Locality: Alluaiv and Karnasurt Mountains, Lovozero alkaline complex, Kola Peninsula, Russia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named after Mikhail Fedorovich Korobitsyn (1928-1996), amateur mineralogist and collector who made significant contributions to mineralogical investigations of the Lovozero alkaline complex.

Korobitsynite Image

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Comments: Colorless prismatic crystals of korobitsynite.
Location: Alluaiv Mt, Lovozero Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia. Scale: Picture size 2 mm.
© Thomas Witzke / Abraxas-Verlag

Korobitsynite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.5188:1:0.5033
Help on Cell Dimensions: Cell Dimensions: a = 7.349, b = 14.164, c = 7.13, Z = 2; V = 742.17 Den(Calc)= 2.59
Help on Crystal System: Crystal System: Orthorhombic - Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: Pbam
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.262(1), 6.53(0.85), 7.09(0.72),2.075(0.57), 2.553(0.56), 3.18(0.52), 1.735(0.5),
Help on Forms: Forms:

Dbl Clk - Start-Stop Rotation
RMB - Cycle Display Modes
Drag1 - Manipulate Crystal
Drag2 - Resize

S - Stereo
I - Indicies
<space> - Start-Stop Rotation
F - Fit to Screen
M - Menu

Help on Above

Forms: ( 0 1 0) ( 0 2 1) ( 1 0 0) ( 1 1 0) ( 0 0 1)

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Physical Properties of Korobitsynite

Help on Cleavage: Cleavage: {100} Imperfect
Help on Color: Color: Colorless.
Help on Diaphaneity: Diaphaneity: Transparent
Help on Fracture: Fracture: Brittle - Generally displayed by glasses and most non-metallic minerals.
Help on Habit: Habit: Crystalline - Coarse - Occurs as well-formed coarse sized crystals.
Help on Habit: Habit: Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).
Help on Hardness: Hardness: 5 - Apatite
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white

Optical Properties of Korobitsynite

Help on Gladstone-Dale: Gladstone-Dale: CI calc= 0.007 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2655,KC= 0.2674
Ncalc = 1.69
Help on Optical Data: Optical Data: Biaxial (+), a=1.646, b=1.654, g=1.763, bire=0.1170

Calculated Properties of Korobitsynite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.56 gm/cc
note: Specific Gravity of Korobitsynite =2.59 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.02
Boson Index = 0.98
Help on Photoelectric: Photoelectric: PEKorobitsynite = 14.43 barns/electron
U=PEKorobitsynite x rElectron Density= 36.98 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Korobitsynite is Not Radioactive

Korobitsynite Classification

Help on  Dana Class: Dana Class: 60.01.03a.02 (60)Cyclosilicate Four-Membered Rings
  (60.01)as Titanosilicates
  (60.01.03a)Labuntsovite Group (Nenadkevichite subgroup Orthorhombic [Pbam])
60.01.03a.01 Nenadkevichite! (Na,Ca,K)(Nb,Ti)Si2O6(O,OH)•2(H2O) Pbam 2/m 2/m 2/m
60.01.03a.02 Korobitsynite! Na3(Ti,Nb)2[Si4O12](OH,O)2•3-4(H2O) Pbam 2/m 2/m 2/m
Help on  Strunz Class: Strunz Class: 09.CE.30a 09 - SILICATES (Germanates)
  09.C - Cyclosilicates
  09.CE -[Si4O12]8- 4-membered single rings (vierer-Einfachringe),
09.CE.30a Nenadkevichite (Na,Ca,K)(Nb,Ti)Si2O6(O,OH)•2(H2O) Pbam 2/m 2/m 2/m
09.CE.30a Korobitsynite! Na3(Ti,Nb)2[Si4O12](OH,O)2•3-4(H2O) Pbam 2/m 2/m 2/m

Other Korobitsynite Information

Help on References: References: NAME( CanMin, 8/99) PHYS. PROP.(MinRec, Vol 31, No4) OPTIC PROP.(MinRec, Vol 31, No4)
Help on See Also: See Also: Links to other databases for Korobitsynite :
1 - Alkali-Nuts(English)
2 - Alkali-Nuts(Francais)
3 - Am. Min. Crystal Structure Database
4 - Athena
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - MinDAT
9 - Mineralienatlas (Deutsch)
10 - Online Mineral Museum
11 - QUT Mineral Atlas
12 - Ruff.Info

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Dana No: 60.01.03a.02 Strunz No: 09.CE.30a





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