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Komarovite Mineral Data

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General Komarovite Information

Help on Chemical  Formula: Chemical Formula: (Ca,Mn)2(Nb,Ti)2Si2O7(O,F)2•3.5(H2O)
Help on Composition: Composition: Molecular Weight = 502.73 gm
   Sodium      0.91 %  Na    1.23 % Na2O
   Calcium     3.19 %  Ca    4.46 % CaO
   Titanium    1.90 %  Ti    3.18 % TiO2
   Manganese   4.37 %  Mn    5.64 % MnO
   Niobium    33.26 %  Nb   47.59 % Nb2O5
   Silicon    11.17 %  Si   23.90 % SiO2
   Hydrogen    1.40 %  H    12.54 % H2O
   Oxygen     42.65 %  O
   Fluorine    1.13 %  F     1.13 % F
                -   %   F    -0.48 % -O=F2    
             ______        ______ 
             100.00 %       99.20 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ca0.4Mn2+0.4Na0.2Nb1.8Ti0.2(Si2O7)O2.9F0.3�3.5(H2O)
Help on Environment: Environment: In alkalic syenites.
Help on IMA Status: IMA Status: Approved IMA 1971
Help on Locality: Locality: Mt. Karnasurt, Lovozero massif, Kola peninsula, Russia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Vladimir M. Komarov (1927-1967), Russian cosmonaut, who was killed during his return flight on April, 23, 1967.
Help on Name Pronunciation: Name Pronunciation: Komarovite + Pronunciation Say KOMAROVITE
Help on Synonym: Synonym: Ellsworthite
  Silicified pyrochlore
 

Komarovite Image

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  Komarovite

Comments: Pale pink crystalline komarovite vein in syenite rock.
Location: Mount Karnasurt, Lovozero Massif, Kola Peninsula, Murmansk District, Russia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Komarovite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =1.5142:1:1.2278
Help on Cell Dimensions: Cell Dimensions: a = 21.2, b = 14, c = 17.19, Z = 18; V = 5,101.99 Den(Calc)= 2.95
Help on Crystal System: Crystal System: Orthorhombic Space Group: Unk
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.16(1), 12.2(0.7), 1.783(0.47),
 

Physical Properties of Komarovite

Help on Cleavage: Cleavage: {001} Good
Help on Color: Color: White, Light brown, Light pink.
Help on Density: Density: 3.61 - 3.76, Average = 3.68
Help on Diaphaneity: Diaphaneity: Transparent to Translucent
Help on Habit: Habit: Foliated - Two dimensional platy forms.
Help on Habit: Habit: Massive - Uniformly indistinguishable crystals forming large masses.
Help on Habit: Habit: Platy - Sheet forms (e.g. micas).
Help on Hardness: Hardness: 4 - Fluorite
Help on Luminescence: Luminescence: Non-fluorescent.
Help on Luster: Luster: Adamantine
Help on Magnetism: Magnetism: Nonmagnetic
Help on Streak: Streak: white
 

Optical Properties of Komarovite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.163 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= -0.045 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2673,KPDmeas= 0.214,KC= 0.2557
Ncalc = 1.75 - 1.96
Help on Optical Data: Optical Data: Biaxial (+), a=1.75, b=1.766, g=1.85, bire=0.1000
 

Calculated Properties of Komarovite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.86 gm/cc
note: Specific Gravity of Komarovite =2.95 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0079306422
Boson Index = 0.9920693578
Help on Photoelectric: Photoelectric: PEKomarovite = 50.93 barns/electron
U=PEKomarovite x rElectron Density= 145.42 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Komarovite is Not Radioactive
 

Komarovite Classification

Help on  Dana Class: Dana Class: 56.02.04.12 (56)Sorosilicate Si2O7 Groups and O, OH, F. and H2O
  (56.02)with cations in [4] and/or >[4] coordination
  (56.02.04)Cuspidine - Wohlerite group
 
56.02.04.01 Baghdadite Ca3(Zr,Ti)Si2O9 P 21/a 2/m
 
56.02.04.02 Burpalite Na2CaZrSi2O7F2 P 21/a 2/m
 
56.02.04.03 Cuspidine Ca4Si2O7(F,OH)2 P 21/c 2/m
 
56.02.04.04 Lavenite (Na,Ca)2(Mn,Fe)(Zr,Ti,Nb)Si2O7(O,OH,F) P 21/a 2/m
 
56.02.04.05 Wohlerite NaCa2(Zr,Nb)Si2O7(O,OH,F)2 P 21/m 2/m
 
56.02.04.06 Niocalite Ca14Nb2(Si2O7)4O6F2 Pa m
 
56.02.04.07 Hiortdahlite (Ca,Na,Y)3(Zr,Ti)Si2O7(F,O,OH)2 P1 1
 
56.02.04.08 Rosenbuschite (Ca,Na)3(Zr,Ti)Si2O8F P1 1
 
56.02.04.09 Hainite Na4Ca8(Ti,Zr,Mn,Fe)3Si8O28F8 P1 1
 
56.02.04.10 Janhaugite (Na,Ca)3(Mn,Fe)3(Ti,Zr,Nb)2Si4O15(OH,F,O)3 P 21/n 2/m
 
56.02.04.11 Jennite Ca9Si6O18(OH)6•8H2O P1 1
 
56.02.04.12 Komarovite (Ca,Mn)2(Nb,Ti)2Si2O7(O,F)2•3.5(H2O) Unk Ortho
 
56.02.04.13 Natrokomarovite* Na6CaNb6[Si4O12F2•4(H2O) C mmm 2/m 2/m 2/m
 
56.02.04.14 Suolunite Ca2Si2O5(OH)2•(H2O) F dd2 mm2
 
56.02.04.15 Mongolite Ca4Nb6Si5O24(OH)10•5(H2O) Unk Tetra
 
56.02.04.16 Kristiansenite! Ca2ScSn(Si2O7)(Si2O6OH) C1 1
 
56.02.04.17 Kochite! Na2(Na,Ca)4Ca4(Mn,Ca)2Zr2Ti2(Si2O7)4(O,F)4F4 P1 1
 
56.02.04.18 Marianoite! Na2Ca4(Nb,Zr)2(Si2O7)2(O,F)4 P 21 2/m
Help on  Strunz Class: Strunz Class: 09.CE.45 09 - SILICATES (Germanates)
  09.C - Cyclosilicates
  09.CE -[Si4O12]8- 4-membered single rings (vierer-Einfachringe),
 
09.CE.45 Komarovite (Ca,Mn)2(Nb,Ti)2Si2O7(O,F)2•3.5(H2O) Unk Ortho
 
09.CE.45 Natrokomarovite* Na6CaNb6[Si4O12F2•4(H2O) C mmm 2/m 2/m 2/m
 

Other Komarovite Information

Help on References: References: NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Komarovite :
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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Print or Cut-and-Paste your Komarovite Specimen Label here :

Komarovite

(Ca,Mn)2(Nb,Ti)2Si2O7(O,F)2•3.5(H2O)
Dana No: 56.02.04.12 Strunz No: 09.CE.45
Locality:

 

Notes:

 

 
   
 


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