Mineralogy Database

Komkovite Mineral Data

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General Komkovite Information

Help on Chemical  Formula: Chemical Formula: BaZrSi3O9•3(H2O)
Help on Composition: Composition: Molecular Weight = 510.85 gm
   Barium     26.88 %  Ba   30.01 % BaO
   Zirconium  17.86 %  Zr   24.12 % ZrO2
   Silicon    16.49 %  Si   35.29 % SiO2
   Hydrogen    1.18 %  H    10.58 % H2O
   Oxygen     37.58 %  O
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: BaZrSi3O9•3(H2O)
Help on Environment: Environment: Apparently altering from catapleiite, in dolomitic veinlets cutting metasomatically altered pyroxenites, in a carbonatite.
Help on IMA Status: IMA Status: Approved IMA 1990
Help on Locality: Locality: In the Vuoriyarvi carbonatite complex, Kola Peninsula, Russia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Aleksandr Ivanovich Komkov (1926-1987), Russian mineralogist and crystallographer, Karpinskii All-Union Research Institute of Geology, St. Petersburg, Russia.
Help on Name Pronunciation: Name Pronunciation: Komkovite + Pronunciation Say KOMKOVITE
Help on Synonym: Synonym: ICSD 39541
  PDF 42-1398

Komkovite Crystallography

Help on Axial Ratios: Axial Ratios: a:c = 1:1.49496
Help on Cell Dimensions: Cell Dimensions: a = 10.526, c = 15.736, Z = 6; V = 1,509.91 Den(Calc)= 3.37
Help on Crystal System: Crystal System: Trigonal - Trapezohedral H-M Symbol (3 2) Space Group: R 32
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 5.23(1), 2.96(0.9), 3.59(0.8),

Physical Properties of Komkovite

Help on Cleavage: Cleavage: None
Help on Color: Color: Brown.
Help on Density: Density: 3.31
Help on Diaphaneity: Diaphaneity: Translucent
Help on Hardness: Hardness: 3-4 - Calcite-Fluorite
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: light brown

Optical Properties of Komkovite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.018 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1951,KPDmeas= 0.1986,KC= 0.1987
Ncalc = 1.66 - 1.67
Help on Optical Data: Optical Data: Uniaxial (-), e=1.644, w=1.671, bire=0.0270.

Calculated Properties of Komkovite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.11 gm/cc
note: Specific Gravity of Komkovite =3.31 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.07
Boson Index = 0.93
Help on Photoelectric: Photoelectric: PEKomkovite = 139.81 barns/electron
U=PEKomkovite x rElectron Density= 434.82 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Komkovite is Not Radioactive

Komkovite Classification

Help on  Dana Class: Dana Class: (59)Cyclosilicate Three-Membered Rings
  (59.02.04)Dana Group Komkovite BaZrSi3O9•3(H2O) R 32 3 2
Help on  Strunz Class: Strunz Class: 09.DM.10 09 - SILICATES (Germanates)
  09.D - Inosilicates* Structural terminology according to Liebau (1985)
  09.DM -Inosilicates with 6-periodic single chains
09.DM.10 Calciohilairite CaZrSi3O9•3(H2O) R 32 3 2
09.DM.10 Hilairite Na2ZrSi3O9•3(H2O) R 3m 3 2/m
09.DM.10 Komkovite BaZrSi3O9•3(H2O) R 32 3 2
09.DM.10 Pyatenkoite-(Y)! Na5(Y,Dy,Gd)TiSi6O18•6(H2O) R 32 3 2
09.DM.10 Sazykinaite-(Y) Na5YZrSi6018•6(H2O) R 32 3 2

Other Komkovite Information

Help on References: References: NAME( AntBidBlaNic2) PHYS. PROP.(Am.Min.,Vol.77,p207,1992) OPTIC PROP.(Am.Min.,Vol.77,p207,1992)
Help on See Also: See Also: Links to other databases for Komkovite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info

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Dana No: Strunz No: 09.DM.10





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